WO2019044183A1 - Radar device measurement method - Google Patents

Radar device measurement method Download PDF

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Publication number
WO2019044183A1
WO2019044183A1 PCT/JP2018/025994 JP2018025994W WO2019044183A1 WO 2019044183 A1 WO2019044183 A1 WO 2019044183A1 JP 2018025994 W JP2018025994 W JP 2018025994W WO 2019044183 A1 WO2019044183 A1 WO 2019044183A1
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WO
WIPO (PCT)
Prior art keywords
radar device
members
reflecting
reflectance
reflection
Prior art date
Application number
PCT/JP2018/025994
Other languages
French (fr)
Japanese (ja)
Inventor
山本　直人
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アルプスアルパイン株式会社
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Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Publication of WO2019044183A1 publication Critical patent/WO2019044183A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating

Definitions

  • the present invention relates to a radar device measurement method for measuring the performance of a radar device, and more particularly to a radar device measurement method suitable for calibrating a millimeter wave radar device for use in a vehicle.
  • a reference target 901 of a reflector which is a standard is installed on the fixed base.
  • a radar device 903 to be measured is installed on the rotating table 902, and inside the radar device 903 is housed an antenna that rotates in a predetermined direction.
  • a resinous cover 904 is hung on the front of the radar device 903 to which radio waves from the antenna are transmitted.
  • a controller 905 formed of a personal computer or the like controls the rotation angle (rotation table angle) of the rotation table 902 at predetermined angular intervals to rotate received power (beam angle reception power) of radio waves received by the radar device 903. Correspond to the angle and record.
  • the controller 905 calculates a radar angle correction value from the received power corresponding to each rotation angle, and writes the correction value in a non-volatile memory (EEPROM or the like) inside the radar device 903.
  • EEPROM non-volatile memory
  • Such a configuration makes it possible to correct the error in the radar angle caused by the resinous cover in front of the antenna.
  • the present invention has been made in view of the circumstances of the prior art, and has an object of providing a radar device measuring method capable of shortening the measurement time and easily enhancing the calibration accuracy.
  • a radar device measuring method includes a plurality of reflecting members having a predetermined reflectance, and the reflection is made to face the radar device in the radiation direction of a radiation wave emitted from the radar device. It is a radar apparatus measuring method which arranges a member and measures characteristics based on a reflected wave from the reflecting member, wherein a plurality of the reflecting members are integrated on an installation surface disposed in a direction intersecting the radiation direction. It is characterized in that it is held and arranged side by side, and at least two of the plurality of reflecting members have different reflectivities from each other.
  • the radar apparatus measuring method configured in this manner holds the plurality of reflecting members integrally and makes the reflectances of the reflecting members different, the reflection from any of the reflecting members is made based on the magnitude of the reception level. It will be easier to identify the waves. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
  • the radiation wave is a millimeter wave band radio wave signal.
  • the radiation wave is a radio wave signal in the millimeter wave band, its wavelength is short. Therefore, it is possible to easily increase the detection accuracy of the positional deviation and the angular deviation of the reflecting member or the radar device.
  • the reflecting member is characterized by being a corner cube reflector.
  • the radar apparatus measuring method configured in this way can easily reflect the radiation wave in the direction of arrival because it uses the corner cube reflector as the reflecting member. Therefore, it is suitable for calibration of a radar apparatus.
  • the installation surface is disposed to be orthogonal to the radiation direction, and three reflection members are provided, and three reflection members are provided on the installation surface. It is characterized in that it is arranged side by side in one row.
  • the radar device measuring method configured as described above, since the three reflecting members are arranged side by side, it is possible to detect the positional deviation and the angular deviation of the reflecting member or the radar device with high accuracy.
  • the reflecting member at the center of the three reflecting members has a first reflectance, and the other two reflecting members both differ from the first reflectance. It has the feature of having 2 reflectance.
  • the reflectance of the central reflecting member of the three reflecting members is made different from the reflectance of the other reflecting members, so the position of the reflecting member or the radar device Deviations and angular deviations can be detected more accurately.
  • the second reflecting member has a first reflectance at the center of the three reflecting members, and a second reflecting member has a second reflectance different from the first reflectance. And a third reflectance different from the first reflectance and the second reflectance.
  • the radar device measuring method configured as described above, since the reflectances of the three reflecting members are made different, it is possible to detect the positional deviation and the angular deviation of the reflecting member or the radar device more accurately.
  • the installation surface is disposed to be orthogonal to the radiation direction, and the five reflection members are provided, and the five reflection members are provided on the installation surface.
  • a second reflectance which is disposed orthogonal to each other, and in which the reflective member at the center of the five reflective members has a first reflectance, and the other reflective members have a different reflectance than the first reflectance.
  • the radar apparatus measuring method configured in this way makes the reflectance of the central reflecting member out of the five reflecting members disposed orthogonal to each other different from the reflectance of the other reflecting members, The positional deviation and the angular deviation of the reflecting member or the radar device in each of the orthogonal directions in which the reflecting members are arranged can be detected with high accuracy in either direction.
  • the radar device measuring method of the present invention since the plurality of reflecting members are integrally held and the reflectances of the reflecting members are made different, which reflecting member the reflected wave is based on the magnitude of the reception level It becomes easy to identify. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
  • the radar device measuring method measures the transmission characteristics and the reception characteristics of a radar device having a high frequency circuit constituting a millimeter wave radar, calibrates the measurement results, and stores the calibration data in the radar device. It is a measurement method for making the radar apparatus have a calibration table for correction, for example, by writing in.
  • the said radar apparatus is mounted, for example in a vehicle etc., and is used for driver assistance etc.
  • the application of the measurement system and the measurement method of the present invention is not limited to the embodiments described below, and can be modified as appropriate.
  • FIG. 1 is a top view showing a measurement system 100 in an embodiment of the present invention in FIG. 1 (a), and an explanation showing the levels of reflected waves RE1 and RE2 from each of the reflection members 11 and 12 in FIG.
  • FIG. 2 is a top view showing the arrangement of the reflecting members 11 and 12 in the embodiment of FIG. 2 (a), and FIG. 2 (b) is a front view.
  • 3 (a) is a perspective view showing the radar device 70
  • FIG. 3 (b) is a plan view of the circuit board 73. As shown in FIG.
  • FIG. 4A is a top view showing the measurement system 100 when the radar device 70 in the embodiment is misaligned
  • FIG. 4B is a reflected wave from each of the reflection members 11 and 12. It is explanatory drawing which shows the level of RE1 and RE2.
  • FIG. 5 is a top view showing the measurement system 100 when the reflecting members 11 and 12 in the embodiment are misaligned in FIG. 5 (a)
  • FIG. 5 (b) is a reflected wave from each of the reflecting members 11 and 12 It is explanatory drawing which shows the level of RE1 and RE2.
  • the measurement system 100 for the radar device measurement method of the present embodiment is a reflection member group 10, an installation surface 50 on which the reflection member group 10 is installed, and an object to be measured. It comprises the radar device 70.
  • the reflective member group 10 includes a plurality of (three) reflective members. Specifically, it comprises one reflecting member 11 and two reflecting members 12.
  • the reflection member group 10 is disposed to face the radar device 70 in the radiation direction of the radiation wave RA1 emitted from the radar device 70, and the reflection from the reflection members 11 and 12 in the reflection member group 10 Measure the characteristics based on the waves RE1 and RE2.
  • one reflective member 11 and two reflective members 12 are integrally held, and on the installation surface 50. Are arranged side by side in one row.
  • the two reflecting members 12 are arranged in a straight line so as to sandwich one reflecting member 11 at the center.
  • the installation surface 50 is disposed in a direction intersecting the radiation direction (Y direction) of the radiation wave RA1, as shown in FIG. 1 (a).
  • the installation surface 50 spreads along a direction (XZ direction) orthogonal to the radiation direction (Y direction) of the radiation wave RA1 in a state (reference state) in which there is no positional displacement or angular displacement at all. It is arrange
  • the installation surface 50 is disposed to be orthogonal to the radiation direction of the radiation wave RA1”.
  • each reflecting member 11 and the radar device 70 are disposed to face each other at a distance D1. Further, each reflecting member 12 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
  • the reflecting member 11 and the reflecting member 12 have reflecting surfaces 10a inside, and each of the reflecting surfaces 10a has a predetermined reflectance.
  • the reflecting member 11 has the first reflectance RT1
  • the reflecting member 12 has the second reflectance RT2.
  • the first reflectance RT1 of the reflecting member 11 and the second reflectance RT2 of the reflecting member 12 are different in magnitude of the respective reflectances.
  • the first reflectance RT1 of the reflection member 11 is set higher than the second reflectance RT2 of the reflection member 12.
  • the first reflectance RT ⁇ b> 1 of the reflecting member 11 may be set to be lower than the second reflectance RT ⁇ b> 2 of the reflecting member 12.
  • the reflecting member 11 and the reflecting member 12 in the measurement system 100 are both corner cube reflectors.
  • a corner cube reflector is a combination of three reflectors with an isosceles triangle whose surface is metal and can accurately reflect an incoming radio wave in the incoming direction It has the property of
  • the radar device 70 has an appearance in which a high frequency connector 75 is attached to a housing 79 having a rectangular parallelepiped shape.
  • a circuit board 73 shown in FIG. 3B is attached to the inside of the radar device 70, and a plurality of antennas 71 are mounted on the circuit board 73.
  • the antenna 71 transmits the radiation wave RA1 and is formed so as to be able to receive the reflected waves RE1 and RE2, and is perpendicular to the + Y direction in FIG. 3A and FIG. 3B, ie, the surface of the circuit board 73.
  • Directionality is oriented in A high frequency circuit 77 including a plurality of antennas 71 is formed on the circuit board 73, and the high frequency circuit 77 constitutes a millimeter wave radar.
  • the radiation wave RA1 emitted by the antenna 71 is a radio wave signal in the millimeter wave band. That is, the antenna 71 is a millimeter wave antenna, and is formed so as to be able to transmit and receive a radio wave signal in the millimeter wave band.
  • the radar device 70 transmits the transmission signal emitted by the antenna 71 in the + Y direction by forming the + Y direction side of the housing 79 with a material such as synthetic resin, or the reception signal coming from the + Y direction on the antenna 71 side. Can be made transparent.
  • the directivity of the antenna 71 can be set by combining a plurality of antenna elements or combining the antenna element with a member capable of refracting or reflecting a millimeter wave signal.
  • the radar device 70 and the reflection members 11 and 12 are disposed such that the + Y direction in FIG. 3A is the same as the + Y direction in FIG. 1A. That is, the reflection members 11 and 12 shown in FIG. 1A are arranged to reflect the reflected wave toward the radar device 70 after receiving the transmission signal transmitted by the radar device 70.
  • the radar device 70 transmits a radiation wave RA1 as a transmission signal to the reflecting member 11, and the radiation wave RA1 is also transmitted to each of the reflecting members 12.
  • the reflecting member 11 and each reflecting member 12 that received the radiation wave RA1 reflect the reflected waves RE1 and RE2 toward the radar device 70.
  • the radar device 70 receives the reflected wave RE1 from the reflecting member 11 as a peak level P1 which is a predetermined level, and receives the reflected wave RE2 from the reflecting member 12 as a peak level P2 which is a predetermined level I assume.
  • the radiation wave RA1 is accurately directed in the direction from which the radiation wave RA1 has arrived, ie, the direction of the antenna 71 in the radar device 70. Is reflected as a reflected wave RE1 or RE2.
  • FIG. 1B shows the levels of the reflected waves RE1 and RE2 from the reflection members 11 and 12, respectively.
  • the first reflectance RT1 of the reflection member 11 is set higher than the second reflectance RT2 of the reflection member 12.
  • the level of the reflected wave RE1 by the reflecting member 11 indicates the peak level P1 at the distance D1
  • the level of the reflected wave RE2 by the reflecting member 12 Indicates a peak level P2 lower than the peak level P1 at the distance D2.
  • the reflected wave RE1 from the reflecting member 11 appears at the position of the distance D1, but from each of the two reflecting members 12
  • the reflected waves RE2 can not be identified because they overlap each other at the same distance D2. In other words, when the reflected waves RE2 from the two reflecting members 12 overlap with each other and can not be distinguished, it can be determined that the radar device 70 and the reflecting members 11 and 12 are correctly disposed.
  • the reflected wave RE1 from the reflecting member 11 does not appear at the position of the distance D1, and two reflecting members The reflected waves RE2 from each of 12 do not overlap.
  • the distance between the reflecting member 11 and the radar device 70 is essentially the same.
  • the distance D2 is longer than the distance D1.
  • the distance L1 is, for example, the distance between the center of the reflective member 11 and the center of the reflective member 12.
  • the peak of the reflected wave RE1 of the reflecting member 11 is at the position of the distance D2
  • the peak of the reflected wave RE2 of the reflecting member 12 on the ⁇ X side of the reflecting member 11 is at the position of the distance D1.
  • the peak of the reflected wave RE2 of the reflecting member 12 on the + X side of the reflecting member 11 is at a position of a distance D3 which is further than the distance D2.
  • the reflected wave RE1 from the reflecting member 11 does not appear at the position of the original distance D1
  • two Reflected waves RE2 from the respective reflection members 12 do not overlap and appear at different distances.
  • the number of the two is two.
  • the reflected waves RE2 from the reflective members 12 do not overlap and appear at different distances.
  • the distance between the reflecting member 12 on the ⁇ X side of the reflecting member 11 and the radar device 70 is a distance D4 longer than the original distance D2. Further, the distance between the reflecting member 12 on the + X side of the reflecting member 11 and the radar device 70 is a distance D5 which is shorter than the original distance D2. On the other hand, the distance between the reflecting member 11 and the radar device 70 remains the original distance D1.
  • the peak of the reflection wave RE1 of the reflection member 11 is at the position of the original distance D1
  • the peak of the reflection wave RE2 of the reflection member 12 on the -X side of the reflection member 11 is a distance D4 longer than the original distance D2.
  • the peak of the reflected wave RE2 of the reflecting member 12 on the + X side of the reflecting member 11 is at the position of the distance D5 closer to the original distance D2.
  • the level of the reflected wave RE1 of the reflecting member 11 indicates the peak level P1 at the position of the original distance D1, and the position of the peak level P2 of the reflected waves RE2 of the two reflecting members 12 does not overlap.
  • the installation surface 50 holding the reflecting members 11 and 12 is inclined with respect to the direction directly facing the radar device 70 when it is at a farther position and a position closer than the position of the distance D1.
  • the measurement system 100 can detect the positional deviation and the angular deviation of the radar device 70 or the reflecting members 11 and 12, and makes it easy to cope with the positional deviation and the angular deviation.
  • the positions of 11 and 12 may be physically adjusted.
  • the reflecting members 11 and 12 are integrally held on the installation surface 50, in the case where the positions of the reflecting members 11 and 12 are physically adjusted according to the detected positional deviation or angular deviation.
  • the reflecting members 11 and 12 can be moved together, which makes it easy to cope with positional deviation and angular deviation.
  • FIG. 6 (a) is a top view showing the measurement system 110 in the first modification
  • FIG. 6 (b) is an explanatory view showing the levels of the reflected waves RE1 and RE2 from the reflection members 21 and 22.
  • It is. 7A is a top view showing the arrangement of the reflecting members 21 and 22 in the first modification
  • FIG. 7B is a front view.
  • the configuration of the reflecting members 21 and 22 in the measuring system 110 is the configuration of the reflecting members 11 and 12 in the measuring system 100 It only differs. Therefore, except for the configuration relating to the difference, the description thereof is omitted. Further, in the second and third modified examples to be described later, the description thereof is omitted in the same manner.
  • a measurement system 110 for a first modification of the radar device measurement method of the present embodiment includes a reflection member group 20 and an installation surface 50 on which the reflection member group 20 is installed;
  • the radar apparatus 70 is an object to be measured.
  • the reflective member group 20 includes a plurality of (two) reflective members. Specifically, it comprises one reflecting member 21 and one reflecting member 22.
  • the reflection member 21 and the reflection member 22 are integrally held, and They are arranged in a row on the installation surface 50.
  • the reflecting member 21 and the reflecting member 22 are arranged in a direction orthogonal to the radiation direction of the radiation wave RA1.
  • the reflecting member 21 and the radar device 70 are disposed to face each other at a distance D1.
  • the reflecting member 22 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
  • the first reflectance RT1 of the reflective member 21 is set to be higher than the second reflectance RT2 of the reflective member 22.
  • the first reflectance RT1 of the reflecting member 21 may be set to be lower than the second reflectance RT2 of the reflecting member 22.
  • FIG. 6B shows the levels of the reflected waves RE1 and RE2 from the reflection members 21 and 22, respectively.
  • the first reflectance RT1 of the reflecting member 21 is set to be higher than the second reflectance RT2 of the reflecting member 22.
  • the level of the reflected wave RE1 by the reflecting member 21 indicates the peak level P1 at the distance D1
  • the reflected wave RE2 by the reflecting member 22 The peak level P2 is lower than the peak level P1 at a distance D2.
  • the level of the reflected wave RE1 by the reflecting member 21 indicates the peak level P1 at the distance D1
  • the level of the reflected wave RE2 by the reflecting member 22 indicates the peak level P2 at the distance D2 lower than the peak level P1. In this case, it can be determined that the radar device 70 and the reflecting members 21 and 22 are correctly disposed.
  • the reflection member group 20 can be configured with only the two reflection members 21 and 22, and thus the measurement system 110. Can be simplified.
  • the radar device 70 and the reflection members 21 and 22 are not disposed at predetermined positions, or when the installation surface 50 holding the reflection members 21 and 22 is inclined with respect to the radar device 70
  • the operation of the second embodiment and the effects thereof are the same as those of the measurement system 100 for the radar device measurement method of the present embodiment. Therefore, the description is omitted. Further, in the second and third modified examples to be described later, the description thereof is omitted in the same manner.
  • FIG. 8 (a) is a top view showing the measurement system 120 in the second modification
  • FIG. 8 (b) is the level of the reflected waves RE1, RE2 and RE3 from the respective reflection members 31, 32 and 33.
  • FIG. 9 is a top view showing the arrangement of the reflecting members 31, 32 and 33 in FIG. 9 (a) according to the second modification
  • FIG. 9 (b) is a front view.
  • a measurement system 120 for a second modification of the radar device measurement method of this embodiment includes a reflection member group 30 and an installation surface 50 on which the reflection member group 30 is installed;
  • the radar apparatus 70 is an object to be measured.
  • the installation surface 50 is disposed to be orthogonal to the radiation direction of the radiation wave RA1.
  • the reflection member group 30 includes three reflection members, and three reflection members are provided on the installation surface 50 by one. It is arranged side by side in a column. Specifically, it comprises one reflecting member 31, one reflecting member 32 and one reflecting member 33.
  • the reflecting member 31 and the radar device 70 are disposed to face each other at a distance D1 as shown in FIG. 8A.
  • the reflecting member 32 and the reflecting member 33, and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
  • the reflectances of the reflective members 31, 32, and 33 are different from each other. That is, the reflective member 31 at the center of the reflective members 31, 32, 33 has the first reflectance RT1, and the reflective member 32 on the + X side of the other two reflective members 32, 33 has the first reflectance.
  • the reflection member 33 on the ⁇ X side has a second reflectance RT2 different from the reflectance RT1, and the third reflectance RT3 different from the first reflectance RT1 and the second reflectance RT2.
  • the first reflectance RT1 of the reflection member 31 is set to the highest of the reflection members 31 to 33
  • the third reflectance RT3 of the reflection member 33 is the reflection member 31 to the reflection member. It is set the lowest among 33.
  • the second reflectance RT2 of the reflecting member 32 is set to a reflectance between the first reflectance RT1 and the third reflectance RT3.
  • FIG. 8B shows the levels of the reflected waves RE1, RE2, and RE3 from the reflecting members 31, 32, and 33, respectively.
  • the first reflectance RT1 of the reflecting member 31 is set to the highest
  • the second reflectance RT2 of the reflecting member 32 is set to the next highest.
  • the third reflectance RT3 of is set to the lowest.
  • the level of the reflected wave RE1 by the reflecting member 31 shows the highest peak level P1 at the distance D1
  • the reflection by the reflecting member 32 The level of the wave RE2 shows a peak level P2 lower than the peak level P1 at the distance D2
  • the level of the reflected wave RE3 by the reflecting member 33 shows a peak level P3 lower than the peak level P2 at the distance D2.
  • the reflected waves RE2 and RE3 from the reflecting members 32 and 33 overlap with each other at the same distance D2, respectively. I can not distinguish. In other words, when the reflected wave RE2 and the reflected wave RE3 from the reflection members 32 and 33 overlap with each other and can not be distinguished, it is determined that the radar device 70 and the reflection members 31, 32 and 33 are correctly disposed. be able to.
  • the radar device 70 and the reflecting members 31, 32, 33 are not arranged at predetermined positions, the reflected wave RE1 from the reflecting member 31 does not appear at the position of the distance D1, and the reflecting member 32 33 and the reflected wave RE3 do not overlap with each other as in the case of the measurement system 100, and appear at different distances.
  • the peak level of the reflected wave RE2 and the peak level of the reflected wave RE3 are different in magnitude, so that the reflected waves RE2 and RE3 do not overlap unlike the case of the measurement system 100.
  • it is possible to easily determine which one of the two appearing peaks is the peak of the reflected wave RE2 or the peak of the reflected wave RE3.
  • FIG. 10 is a top view of FIG. 10A showing the measurement system 130 in the third modification
  • FIG. 10B is an explanatory view showing the levels of the reflected waves RE1 and RE2 from the respective reflection members 41 and 42.
  • FIG. 11A is a top view showing the arrangement of the reflecting members 41 and 42 in the third modification
  • FIG. 11B is a front view.
  • the measurement system 130 for the third modification of the radar device measurement method of the present embodiment includes a reflection member group 40 and an installation surface 50 on which the reflection member group 40 is installed;
  • the radar apparatus 70 is an object to be measured.
  • the reflective member group 40 includes a plurality of (five) reflective members. Specifically, it consists of one reflecting member 41 and four reflecting members 42.
  • the reflection member group 40 is disposed such that the installation surface 50 is orthogonal to the radiation direction (Y direction) of the radiation wave RA1, and the reflection member group 40 is on this orthogonal plane. It is provided to stand up.
  • the reflective member 41 is disposed at the center of the installation surface 50, and the four reflective members 42 are disposed vertically and laterally of the reflective member 41. That is, the five reflection members 41 and 42 are disposed to be orthogonal to each other on the installation surface 50.
  • each reflecting member 41 and the radar device 70 are disposed to face each other at a distance D1. Further, each reflecting member 42 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
  • the reflecting member 41 has the first reflectance RT1
  • each of the four reflecting members 42 has the second reflectance RT2 different from the first reflectance RT1.
  • the first reflectance RT1 is set higher than the second reflectance RT2.
  • FIG. 10B shows the levels of the reflected waves RE1 and RE2 from the reflection members 41 and 42, respectively.
  • the first reflectance RT1 of the reflecting member 41 is set to be higher than the second reflectance RT2 of each of the reflecting members 42.
  • the level of the reflected wave RE1 by the reflecting member 41 indicates the peak level P1 at the distance D1
  • the level of the reflected wave RE2 by the reflecting member 42 Indicates a peak level P2 lower than the peak level P1 at the distance D2.
  • the reflected waves RE2 from the respective reflecting members 42 can not be distinguished because they overlap each other at the same distance D2. In other words, when the plurality of reflected waves RE2 from the respective reflection members 42 overlap and can not be distinguished, it can be determined that the radar device 70 and the respective reflection members 42 are correctly disposed.
  • the radar device 70 and the reflecting members 41 and 42 are not correctly disposed at predetermined positions, the reflected wave RE1 from the reflecting member 41 does not appear at the position of the distance D1, and each reflecting member As in the case of the measurement system 100, the plurality of reflected waves RE2 from each of the plurality 42 do not overlap, and appear at different distances.
  • the number of reflection members 42 that is, the number of each reflected wave RE2 is larger than in the case of measurement system 100, so the accuracy of the arrangement of radar device 70 and reflection members 41 and 42 is more correct. It can be judged.
  • the plurality of reflecting members 11 and 12 are integrally held, and the reflectances of the reflecting members 11 and 12 are made different from each other. It becomes easy to identify whether it is a reflected wave. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
  • the radiation wave is a millimeter wave band radio signal, its wavelength is short. Therefore, it is possible to easily improve the detection accuracy of the positional deviation and the angular deviation of the reflecting members 11 and 12 or the radar device 70.
  • the corner cube reflector is used as the reflecting members 11 and 12, the radiation wave RA1 can be easily reflected in the direction of arrival. Therefore, it is suitable for calibration of the radar device 70.
  • the positional deviation and the angular deviation of the reflecting members 11 and 12 or the radar device 70 can be detected with high accuracy.
  • the positional deviation of the reflecting members 11, 12 or the radar device 70 And angular deviation can be detected more accurately.
  • the reflection member group 20 can be configured of only the two reflection members 21 and 22, so the configuration of the measurement system 110 can be simplified.
  • the respective reflectances of the three reflection members 31, 32, 33 are made different, so positional deviation and angular deviation of the reflection members 31, 32, 33 or the radar device 70 can be obtained. It can be detected more accurately.
  • the reflectance of the central reflection member 41 among the five reflection members 41 and 42 disposed orthogonally to the reflectance of the other reflection members 42 is Because they are different from each other, positional deviation and angular deviation of the reflecting members 41 and 42 or the radar device 70 in the orthogonal directions in which the reflecting members 41 and 42 are arranged can be detected with high accuracy in either direction.
  • the radar device measuring method of the present invention since the plurality of reflecting members are integrally held and the reflectances of the reflecting members are different, which reflecting member is used based on the magnitude of the reception level It is easy to identify the reflected wave from As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
  • the present invention is not limited to the above embodiment, and can be implemented with various modifications without departing from the scope of the invention.
  • the case where the positional deviation of the radar device has been described has been described, but the effect is the same even when the positional deviation of the reflecting member occurs.
  • the case where the reflecting member is angularly displaced has been described, the effect is the same even when the radar device is angularly displaced.

Abstract

[Problem] To provide a radar device measurement method that makes it possible to reduce measurement time while enhancing calibration accuracy with ease. [Solution] Provided is a radar device measurement method in which a plurality of reflection members 11, 12 having prescribed reflectances are employed, the reflection members 11, 12 are arranged so as to oppose the radar device 70 in the radiation direction of radiated waves RA1 radiated by the radar device 70, and characteristic measurement is carried out on the basis of reflected waves RE1, RE2 from the reflection members 11, 12, wherein the reflection members 11, 12 are integrally held on an installation surface 50 disposed in a direction intersecting the radiation direction and are arranged in a row, and at least two reflection members from among the plurality of reflection members 11, 12 have different reflectances RT1, RT2.

Description

レーダ装置測定方法Radar device measurement method
　本発明は、レーダ装置の性能を測定するためのレーダ装置測定方法に関し、特に車載用のミリ波レーダ装置の校正に適したレーダ装置測定方法に関する。 The present invention relates to a radar device measurement method for measuring the performance of a radar device, and more particularly to a radar device measurement method suitable for calibrating a millimeter wave radar device for use in a vehicle.
　従来から、レーダ装置の測定においては、レーダ装置とその性能測定に使用されるターゲットと呼ばれる反射部材を、正確に設置することが要求される。しかしながら、周波数の高いミリ波帯の電波信号を使用するようなレーダ装置の測定においては、レーダ装置及び反射部材を正確に設置することが非常に困難であった。そのため、最近では、一旦、レーダ装置及び反射部材を設置して測定を行なっておき、その後、測定した結果を校正し、その校正データをレーダ装置内のメモリに書き込むなどして、補正のための校正テーブルをレーダ装置に持たせるという方法が取られるようになってきた。 Conventionally, in the measurement of a radar device, it is required to accurately install the radar device and a reflective member called a target used for performance measurement. However, in the measurement of a radar device using a high frequency radio wave signal in the millimeter wave band, it has been very difficult to accurately install the radar device and the reflecting member. Therefore, recently, once the radar device and the reflecting member are installed and measured, the measured result is calibrated, and the calibration data is written to a memory in the radar device, etc. for correction. A method has been adopted in which a calibration table is provided to a radar device.
　このようなレーダ装置測定方法として、下記の特許文献１に記載のレーダ角度補正方法が知られている。図１２を用いて、このレーダ角度補正方法に用いられる測定系９００について説明する。 As such a radar device measurement method, a radar angle correction method described in Patent Document 1 below is known. The measurement system 900 used in this radar angle correction method will be described with reference to FIG.
　図１２において、固定台には標準となる反射物の基準ターゲット９０１が設置されている。一方、回転台９０２には測定対象のレーダ装置９０３が設置されており、そのレーダ装置９０３の内部には所定方向に回転するアンテナが収納されている。また、アンテナからの電波が送信されるレーダ装置９０３の前面には樹脂性のカバー９０４が架けられている。 In FIG. 12, a reference target 901 of a reflector which is a standard is installed on the fixed base. On the other hand, a radar device 903 to be measured is installed on the rotating table 902, and inside the radar device 903 is housed an antenna that rotates in a predetermined direction. A resinous cover 904 is hung on the front of the radar device 903 to which radio waves from the antenna are transmitted.
  パーソナルコンピュータ等から成るコントローラ９０５は、回転台９０２の回転角度（回転台角度）を所定の角度刻みで制御して、レーダ装置９０３が受信する電波の受信電力（ビーム角度受信電力）を各々の回転角度に対応させて記録する。コントローラ９０５は、各々の回転角度と対応する受信電力からレーダ角度補正値を算出し、その補正値をレーダ装置９０３内部の不揮発性メモリ（ＥＥＰＲＯＭ等）に書き込む。 A controller 905 formed of a personal computer or the like controls the rotation angle (rotation table angle) of the rotation table 902 at predetermined angular intervals to rotate received power (beam angle reception power) of radio waves received by the radar device 903. Correspond to the angle and record. The controller 905 calculates a radar angle correction value from the received power corresponding to each rotation angle, and writes the correction value in a non-volatile memory (EEPROM or the like) inside the radar device 903.
　このような構成によって、アンテナの前面にある樹脂性のカバーによって生じるレーダ角度の誤差を補正することができる。 Such a configuration makes it possible to correct the error in the radar angle caused by the resinous cover in front of the antenna.
特開２００５－０１７２８３号公報JP, 2005-017283, A
　しかしながら、上述した測定系９００においてレーダ装置の校正精度を高めるためには、レーダ装置と反射部材（基準ターゲット）との相対位置や反射部材の角度等を精度良く検出して位置合わせを行う必要が有った。そのため、レーダ装置１台当たりの測定のための時間が多く掛かってしまっていた。 However, in order to enhance the calibration accuracy of the radar device in the measurement system 900 described above, it is necessary to accurately detect the relative position of the radar device and the reflective member (reference target), the angle of the reflective member, etc. There was. Therefore, it takes much time for measurement per radar device.
　本発明はこのような従来技術の実情に鑑みてなされたもので、測定時間を短縮すると共に、校正精度を容易に高めることができるレーダ装置測定方法を提供することを目的とする。 The present invention has been made in view of the circumstances of the prior art, and has an object of providing a radar device measuring method capable of shortening the measurement time and easily enhancing the calibration accuracy.
　上記課題を解決するために本発明のレーダ装置測定方法は、所定の反射率を有する反射部材を複数備え、レーダ装置から放射される放射波の放射方向に当該レーダ装置と対向するように前記反射部材を配置し、前記反射部材からの反射波に基づいて特性測定を行うレーダ装置測定方法であって、複数の前記反射部材が、前記放射方向と交差する方向に配設された設置面に一体的に保持されると共に、並べて配置されており、複数の前記反射部材のうちの、少なくとも２個の前記反射部材は、互いに異なる反射率を有している、という特徴を有する。 In order to solve the above problems, a radar device measuring method according to the present invention includes a plurality of reflecting members having a predetermined reflectance, and the reflection is made to face the radar device in the radiation direction of a radiation wave emitted from the radar device. It is a radar apparatus measuring method which arranges a member and measures characteristics based on a reflected wave from the reflecting member, wherein a plurality of the reflecting members are integrated on an installation surface disposed in a direction intersecting the radiation direction. It is characterized in that it is held and arranged side by side, and at least two of the plurality of reflecting members have different reflectivities from each other.
　このように構成されたレーダ装置測定方法は、複数の反射部材を一体的に保持し、それら反射部材の反射率を異なせているため、受信レベルの大きさに基づいてどの反射部材からの反射波かを識別し易くなる。その結果、測定時間を短縮すると共に、校正精度を容易に高めることができる。 Since the radar apparatus measuring method configured in this manner holds the plurality of reflecting members integrally and makes the reflectances of the reflecting members different, the reflection from any of the reflecting members is made based on the magnitude of the reception level. It will be easier to identify the waves. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
　また、上記の構成において、前記放射波は、ミリ波帯の電波信号である、という特徴を有する。 Further, in the above configuration, the radiation wave is a millimeter wave band radio wave signal.
　このように構成されたレーダ装置測定方法は、放射波がミリ波帯の電波信号であるため、その波長が短い。従って、反射部材又はレーダ装置の位置ズレ及び角度ズレの検出精度を高めることが容易に可能になる。 In the radar device measuring method configured as described above, since the radiation wave is a radio wave signal in the millimeter wave band, its wavelength is short. Therefore, it is possible to easily increase the detection accuracy of the positional deviation and the angular deviation of the reflecting member or the radar device.
　また、上記の構成において、前記反射部材は、コーナ・キューブ・リフレクタである、という特徴を有する。 Further, in the above configuration, the reflecting member is characterized by being a corner cube reflector.
　このように構成されたレーダ装置測定方法は、反射部材としてコーナ・キューブ・リフレクタを使用するため、放射波をその到来方向に反射させることが容易にできる。従って、レーダ装置の校正に適している。 The radar apparatus measuring method configured in this way can easily reflect the radiation wave in the direction of arrival because it uses the corner cube reflector as the reflecting member. Therefore, it is suitable for calibration of a radar apparatus.
　また、上記の構成において、前記設置面が前記放射方向に対して直交するように配設されており、前記反射部材を３個備えていると共に、３個の前記反射部材が前記設置面上で１列に並べて配置されている、という特徴を有する。 Further, in the above configuration, the installation surface is disposed to be orthogonal to the radiation direction, and three reflection members are provided, and three reflection members are provided on the installation surface. It is characterized in that it is arranged side by side in one row.
　このように構成されたレーダ装置測定方法は、反射部材を３個並べて配置したので、反射部材又はレーダ装置の位置ズレ及び角度ズレを、精度良く検出することができる。 In the radar device measuring method configured as described above, since the three reflecting members are arranged side by side, it is possible to detect the positional deviation and the angular deviation of the reflecting member or the radar device with high accuracy.
　また、上記の構成において、３個の前記反射部材のうちの中央の前記反射部材が第１反射率を有すると共に、他の２個の前記反射部材が共に、前記第１反射率とは異なる第２反射率を有する、という特徴を有する。 Further, in the above configuration, the reflecting member at the center of the three reflecting members has a first reflectance, and the other two reflecting members both differ from the first reflectance. It has the feature of having 2 reflectance.
　このように構成されたレーダ装置測定方法は、３個の反射部材のうちの中央の反射部材の反射率を、他の反射部材の反射率とは異ならせたので、反射部材又はレーダ装置の位置ズレ及び角度ズレを、より精度良く検出することができる。 In the radar device measuring method configured as described above, the reflectance of the central reflecting member of the three reflecting members is made different from the reflectance of the other reflecting members, so the position of the reflecting member or the radar device Deviations and angular deviations can be detected more accurately.
　また、上記の構成において、３個の前記反射部材のうちの中央の前記反射部材が第１反射率を有し、他の１個の前記反射部材が前記第１反射率とは異なる第２反射率を有し、更に他の１個の前記反射部材が前記第１反射率及び前記第２反射率とは異なる第３反射率を有する、という特徴を有する。 In the above configuration, the second reflecting member has a first reflectance at the center of the three reflecting members, and a second reflecting member has a second reflectance different from the first reflectance. And a third reflectance different from the first reflectance and the second reflectance.
　このように構成されたレーダ装置測定方法は、３個の反射部材それぞれの反射率を異ならせたので、反射部材又はレーダ装置の位置ズレ及び角度ズレを、更に精度良く検出する
ことができる。 In the radar device measuring method configured as described above, since the reflectances of the three reflecting members are made different, it is possible to detect the positional deviation and the angular deviation of the reflecting member or the radar device more accurately.
　また、上記の構成において、前記設置面が前記放射方向に対して直交するように配設されており、前記反射部材を５個備えていると共に、５個の前記反射部材が前記設置面上で直交するように配置されていて、５個の前記反射部材のうちの中央の前記反射部材が第１反射率を有すると共に、他の前記反射部材が前記第１反射率とは異なる第２反射率を有する、という特徴を有する。 In the above configuration, the installation surface is disposed to be orthogonal to the radiation direction, and the five reflection members are provided, and the five reflection members are provided on the installation surface. A second reflectance, which is disposed orthogonal to each other, and in which the reflective member at the center of the five reflective members has a first reflectance, and the other reflective members have a different reflectance than the first reflectance. Have the feature of
　このように構成されたレーダ装置測定方法は、直交するように配置された５個の反射部材のうちの中央の反射部材の反射率を、他の反射部材の反射率とは異ならせたので、反射部材が配置されている直交する方向それぞれの、反射部材又はレーダ装置の位置ズレ及び角度ズレを、どちらの方向も精度良く検出することができる。 Since the radar apparatus measuring method configured in this way makes the reflectance of the central reflecting member out of the five reflecting members disposed orthogonal to each other different from the reflectance of the other reflecting members, The positional deviation and the angular deviation of the reflecting member or the radar device in each of the orthogonal directions in which the reflecting members are arranged can be detected with high accuracy in either direction.
　本発明のレーダ装置測定方法は、複数の反射部材を一体的に保持し、それら反射部材の反射率を異なせているため、受信レベルの大きさに基づいてどの反射部材からの反射波かを識別し易くなる。その結果、測定時間を短縮すると共に、校正精度を容易に高めることができる。 According to the radar device measuring method of the present invention, since the plurality of reflecting members are integrally held and the reflectances of the reflecting members are made different, which reflecting member the reflected wave is based on the magnitude of the reception level It becomes easy to identify. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
本発明の実施形態における測定系を示す上面図及び各反射部材からの反射波のレベルを示す説明図である。It is an upper side figure which shows the measurement system in embodiment of this invention, and explanatory drawing which shows the level of the reflected wave from each reflection member. 実施形態における反射部材の配置を示す上面図及び正面図である。It is the top view and front view which show arrangement | positioning of the reflection member in embodiment. レーダ装置を示す斜視図及び回路基板の平面図である。They are a perspective view which shows a radar apparatus, and a top view of a circuit board. 実施形態におけるレーダ装置が位置ズレした場合の測定系の例を示す上面図及び各反射部材からの反射波のレベルを示す説明図である。They are an upper side figure which shows an example of a measurement system when a radar installation in an embodiment shifts in position, and an explanatory view showing a level of a reflected wave from each reflective member. 実施形態における反射部材が角度ズレした場合の測定系の例を示す上面図及び各反射部材からの反射波のレベルを示す説明図である。They are an upper side figure which shows an example of a measurement system when a reflective member in an embodiment carries out angle shift, and an explanatory view showing a level of a reflected wave from each reflective member. 第１変形例における測定系を示す上面図、及び各反射部材からの反射波のレベルを示す説明図である。It is an upper side figure which shows the measurement system in a 1st modification, and explanatory drawing which shows the level of the reflected wave from each reflection member. 第１変形例における反射部材の配置を示す上面図及び正面図である。It is the top view and front view which show arrangement | positioning of the reflection member in a 1st modification. 第２変形例における測定系を示す上面図、及び各反射部材からの反射波のレベルを示す説明図である。It is an upper side figure showing a measurement system in the 2nd modification, and an explanatory view showing a level of a reflected wave from each reflecting member. 第２変形例における反射部材の配置を示す上面図及び正面図である。It is the top view and front view which show arrangement | positioning of the reflection member in a 2nd modification. 第３変形例における測定系を示す上面図、及び各反射部材からの反射波のレベルを示す説明図である。It is an upper side figure showing a measurement system in the 3rd modification, and an explanatory view showing a level of a reflected wave from each reflective member. 第３変形例における反射部材の配置を示す上面図及び正面図である。It is the top view and front view which show arrangement | positioning of the reflection member in a 3rd modification. 従来例に係る測定系を示す説明図である。It is explanatory drawing which shows the measurement system which concerns on a prior art example.
　［実施形態］
　以下、本発明について、図面を参照しながら説明する。本発明のレーダ装置測定方法は、ミリ波レーダを構成する高周波回路を有したレーダ装置の送信特性と受信特性とを測定し、その測定した結果を校正し、その校正データをレーダ装置内のメモリに書き込むなどして、補正のための校正テーブルをレーダ装置に持たせるための測定方法である。当該レーダ装置は、例えば、車両等に搭載されて、ドライバーアシスト等のために使用される。本発明の測定系及び測定方法の用途については、以下説明する実施形態に限定されるものではなく適宜変更が可能である。 [Embodiment]
Hereinafter, the present invention will be described with reference to the drawings. The radar device measuring method according to the present invention measures the transmission characteristics and the reception characteristics of a radar device having a high frequency circuit constituting a millimeter wave radar, calibrates the measurement results, and stores the calibration data in the radar device. It is a measurement method for making the radar apparatus have a calibration table for correction, for example, by writing in. The said radar apparatus is mounted, for example in a vehicle etc., and is used for driver assistance etc. The application of the measurement system and the measurement method of the present invention is not limited to the embodiments described below, and can be modified as appropriate.
　最初に、図１乃至図５を参照して、本発明のレーダ装置測定方法のための測定系１００の構成、レーダ装置７０の構成、及び測定系１００におけるレーダ装置測定方法について説明する。図１は、図１（ａ）が本発明の実施形態における測定系１００を示す上面図であり、図１（ｂ）が各反射部材１１，１２からの反射波ＲＥ１，ＲＥ２のレベルを示す説明図である。図２は、図２（ａ）が実施形態における反射部材１１，１２の配置を示す上面図であり、図２（ｂ）が正面図である。図３は、図３（ａ）がレーダ装置７０を示す斜視図であり、図３（ｂ）が回路基板７３の平面図である。また、図４は、図４（ａ）が実施形態におけるレーダ装置７０が位置ズレした場合の測定系１００を示す上面図であり、図４（ｂ）が各反射部材１１，１２からの反射波ＲＥ１，ＲＥ２のレベルを示す説明図である。図５は、図５（ａ）が実施形態における反射部材１１，１２が角度ズレした場合の測定系１００を示す上面図であり、図５（ｂ）が各反射部材１１，１２からの反射波ＲＥ１，ＲＥ２のレベルを示す説明図である。 First, the configuration of the measurement system 100, the configuration of the radar device 70, and the radar device measurement method in the measurement system 100 for the radar device measurement method of the present invention will be described with reference to FIGS. FIG. 1 is a top view showing a measurement system 100 in an embodiment of the present invention in FIG. 1 (a), and an explanation showing the levels of reflected waves RE1 and RE2 from each of the reflection members 11 and 12 in FIG. FIG. FIG. 2 is a top view showing the arrangement of the reflecting members 11 and 12 in the embodiment of FIG. 2 (a), and FIG. 2 (b) is a front view. 3 (a) is a perspective view showing the radar device 70, and FIG. 3 (b) is a plan view of the circuit board 73. As shown in FIG. 4A is a top view showing the measurement system 100 when the radar device 70 in the embodiment is misaligned, and FIG. 4B is a reflected wave from each of the reflection members 11 and 12. It is explanatory drawing which shows the level of RE1 and RE2. FIG. 5 is a top view showing the measurement system 100 when the reflecting members 11 and 12 in the embodiment are misaligned in FIG. 5 (a), and FIG. 5 (b) is a reflected wave from each of the reflecting members 11 and 12 It is explanatory drawing which shows the level of RE1 and RE2.
　本実施形態のレーダ装置測定方法のための測定系１００は、図１（ａ）に示すように、反射部材群１０と、反射部材群１０が設置された設置面５０と、被測定物であるレーダ装置７０とで構成される。反射部材群１０は、反射部材を複数（３個）備えている。具体的には、１個の反射部材１１と２個の反射部材１２とから成る。 As shown in FIG. 1A, the measurement system 100 for the radar device measurement method of the present embodiment is a reflection member group 10, an installation surface 50 on which the reflection member group 10 is installed, and an object to be measured. It comprises the radar device 70. The reflective member group 10 includes a plurality of (three) reflective members. Specifically, it comprises one reflecting member 11 and two reflecting members 12.
　測定系１００では、レーダ装置７０から放射される放射波ＲＡ１の放射方向に当該レーダ装置７０と対向するように反射部材群１０を配置し、反射部材群１０内の反射部材１１，１２からの反射波ＲＥ１，ＲＥ２に基づいて特性測定を行う。 In the measurement system 100, the reflection member group 10 is disposed to face the radar device 70 in the radiation direction of the radiation wave RA1 emitted from the radar device 70, and the reflection from the reflection members 11 and 12 in the reflection member group 10 Measure the characteristics based on the waves RE1 and RE2.
　反射部材群１０では、図２（ａ）、図２（ｂ）に示すように、１個の反射部材１１及び２個の反射部材１２が、一体的に保持されていると共に、設置面５０上で１列に並べて配置されている。２個の反射部材１２は、１個の反射部材１１を中央に挟むように、直線状に配置されている。 In the reflective member group 10, as shown in FIGS. 2 (a) and 2 (b), one reflective member 11 and two reflective members 12 are integrally held, and on the installation surface 50. Are arranged side by side in one row. The two reflecting members 12 are arranged in a straight line so as to sandwich one reflecting member 11 at the center.
　設置面５０は、図１（ａ）に示すように、放射波ＲＡ１の放射方向（Ｙ方向）と交差する方向に配設されている。実際には、設置面５０は、位置ズレや角度ズレが全くない状態（基準状態）において、放射波ＲＡ１の放射方向（Ｙ方向）に対して直交する方向（Ｘ－Ｚ方向）に添って広がる平面部分となるように配設されている。以下、このような状態のことを、「設置面５０が放射波ＲＡ１の放射方向に対して直交するように配設されている」という。 The installation surface 50 is disposed in a direction intersecting the radiation direction (Y direction) of the radiation wave RA1, as shown in FIG. 1 (a). In practice, the installation surface 50 spreads along a direction (XZ direction) orthogonal to the radiation direction (Y direction) of the radiation wave RA1 in a state (reference state) in which there is no positional displacement or angular displacement at all. It is arrange | positioned so that it may become a plane part. Hereinafter, such a state is referred to as “the installation surface 50 is disposed to be orthogonal to the radiation direction of the radiation wave RA1”.
　反射部材１１とレーダ装置７０とは、距離Ｄ１を隔てて、互いに正対するように配置されている。また、各反射部材１２とレーダ装置７０とは、放射波ＲＡ１の放射方向に対し所定の角度を有すると共に、距離Ｄ１よりも大きな距離Ｄ２を隔てて配置されている。 The reflecting member 11 and the radar device 70 are disposed to face each other at a distance D1. Further, each reflecting member 12 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
　反射部材１１及び反射部材１２は、図２（ａ）、図２（ｂ）に示すように、その内側に反射面１０ａを有しており、各反射面１０ａはそれぞれが、所定の反射率を有している。即ち、反射部材１１が第１反射率ＲＴ１を有し、反射部材１２が第２反射率ＲＴ２を有している。反射部材１１の第１反射率ＲＴ１と反射部材１２の第２反射率ＲＴ２とは、それぞれの反射率の大きさが異なっている。 As shown in FIGS. 2A and 2B, the reflecting member 11 and the reflecting member 12 have reflecting surfaces 10a inside, and each of the reflecting surfaces 10a has a predetermined reflectance. Have. That is, the reflecting member 11 has the first reflectance RT1, and the reflecting member 12 has the second reflectance RT2. The first reflectance RT1 of the reflecting member 11 and the second reflectance RT2 of the reflecting member 12 are different in magnitude of the respective reflectances.
　言い換えれば、複数の反射部材１１，１２のうちの、少なくとも２個の反射部材は、互いに反射率が異なっている。測定系１００では、反射部材１１の第１反射率ＲＴ１が、反射部材１２の第２反射率ＲＴ２よりも高く設定されている。尚、反射部材１１の第１反射率ＲＴ１が、反射部材１２の第２反射率ＲＴ２よりも低く設定されていてもよい。 In other words, at least two of the plurality of reflecting members 11 and 12 have different reflectances from each other. In the measurement system 100, the first reflectance RT1 of the reflection member 11 is set higher than the second reflectance RT2 of the reflection member 12. The first reflectance RT <b> 1 of the reflecting member 11 may be set to be lower than the second reflectance RT <b> 2 of the reflecting member 12.
　測定系１００における反射部材１１及び反射部材１２は、共にコーナ・キューブ・リフレクタである。コーナ・キューブ・リフレクタは、表面が金属で、形が二等辺三角形の反射板３枚をつなぎ合わせたもので、到来して来た電波を到来して来た方向へ正確に反射することができるという性質を有している。 The reflecting member 11 and the reflecting member 12 in the measurement system 100 are both corner cube reflectors. A corner cube reflector is a combination of three reflectors with an isosceles triangle whose surface is metal and can accurately reflect an incoming radio wave in the incoming direction It has the property of
　レーダ装置７０は、図３（ａ）に示すように、直方体形状をした筐体７９に高周波コネクタ７５が取り付けられた外観をしている。レーダ装置７０の内部には、図３（ｂ）に示す回路基板７３が取り付けられており、回路基板７３上には、複数のアンテナ７１が搭載されている。 As shown in FIG. 3A, the radar device 70 has an appearance in which a high frequency connector 75 is attached to a housing 79 having a rectangular parallelepiped shape. A circuit board 73 shown in FIG. 3B is attached to the inside of the radar device 70, and a plurality of antennas 71 are mounted on the circuit board 73.
　アンテナ７１は、放射波ＲＡ１を送信すると共に、その反射波ＲＥ１，ＲＥ２を受信可能に形成されており、図３（ａ），図３（ｂ）における＋Ｙ方向、即ち回路基板７３の面に垂直な方向に指向性が向けられている。回路基板７３上には、複数のアンテナ７１を含む高周波回路７７が形成されており、高周波回路７７は、ミリ波レーダを構成している。 The antenna 71 transmits the radiation wave RA1 and is formed so as to be able to receive the reflected waves RE1 and RE2, and is perpendicular to the + Y direction in FIG. 3A and FIG. 3B, ie, the surface of the circuit board 73. Directionality is oriented in A high frequency circuit 77 including a plurality of antennas 71 is formed on the circuit board 73, and the high frequency circuit 77 constitutes a millimeter wave radar.
　アンテナ７１が放射する放射波ＲＡ１は、ミリ波帯の電波信号である。即ち、アンテナ７１は、ミリ波アンテナであり、ミリ波帯の電波信号を送受信可能に形成されている。 The radiation wave RA1 emitted by the antenna 71 is a radio wave signal in the millimeter wave band. That is, the antenna 71 is a millimeter wave antenna, and is formed so as to be able to transmit and receive a radio wave signal in the millimeter wave band.
　レーダ装置７０は、筐体７９の＋Ｙ方向側を合成樹脂等の材質で構成することにより、アンテナ７１が放射した送信信号を＋Ｙ方向に透過させたり、＋Ｙ方向から到来する受信信号をアンテナ７１側に透過させたりできるようになる。また、アンテナ７１の指向性は、複数のアンテナ素子を組み合わせたり、アンテナ素子とミリ波用信号の屈折や反射が可能な部材とを組み合わせたりして設定することができる。 The radar device 70 transmits the transmission signal emitted by the antenna 71 in the + Y direction by forming the + Y direction side of the housing 79 with a material such as synthetic resin, or the reception signal coming from the + Y direction on the antenna 71 side. Can be made transparent. The directivity of the antenna 71 can be set by combining a plurality of antenna elements or combining the antenna element with a member capable of refracting or reflecting a millimeter wave signal.
　測定系１００においては、図３（ａ）における＋Ｙ方向が、図１（ａ）における＋Ｙ方向と同一になるように、レーダ装置７０と反射部材１１，１２とが配置されている。即ち、図１（ａ）に示す反射部材１１，１２は、レーダ装置７０が送信する送信信号を受信した後に、レーダ装置７０に向けて反射波を反射するように配置されている。 In the measurement system 100, the radar device 70 and the reflection members 11 and 12 are disposed such that the + Y direction in FIG. 3A is the same as the + Y direction in FIG. 1A. That is, the reflection members 11 and 12 shown in FIG. 1A are arranged to reflect the reflected wave toward the radar device 70 after receiving the transmission signal transmitted by the radar device 70.
　レーダ装置７０は、反射部材１１に向けて送信信号として放射波ＲＡ１を送信するが、その放射波ＲＡ１は、各反射部材１２にも送信される。放射波ＲＡ１を受信した反射部材１１及び各反射部材１２は、レーダ装置７０に向けて反射波ＲＥ１、ＲＥ２を反射する。レーダ装置７０においては、反射部材１１からの反射波ＲＥ１を、所定のレベルであるピークレベルＰ１として受信し、反射部材１２からの反射波ＲＥ２を、所定のレベルであるピークレベルＰ２として受信するものとする。 The radar device 70 transmits a radiation wave RA1 as a transmission signal to the reflecting member 11, and the radiation wave RA1 is also transmitted to each of the reflecting members 12. The reflecting member 11 and each reflecting member 12 that received the radiation wave RA1 reflect the reflected waves RE1 and RE2 toward the radar device 70. The radar device 70 receives the reflected wave RE1 from the reflecting member 11 as a peak level P1 which is a predetermined level, and receives the reflected wave RE2 from the reflecting member 12 as a peak level P2 which is a predetermined level I assume.
　前述したように、反射部材１１及び反射部材１２がコーナ・キューブ・リフレクタであるため、放射波ＲＡ１を、放射波ＲＡ１が到来して来た方向、即ちレーダ装置７０内のアンテナ７１の方向へ正確に反射波ＲＥ１又はＲＥ２として反射する。 As described above, since the reflecting member 11 and the reflecting member 12 are corner cube reflectors, the radiation wave RA1 is accurately directed in the direction from which the radiation wave RA1 has arrived, ie, the direction of the antenna 71 in the radar device 70. Is reflected as a reflected wave RE1 or RE2.
　図１（ｂ）には、反射部材１１，１２それぞれからの反射波ＲＥ１，ＲＥ２のレベルが示されている。前述したように、測定系１００では、反射部材１１の第１反射率ＲＴ１が、反射部材１２の第２反射率ＲＴ２よりも高く設定されている。 FIG. 1B shows the levels of the reflected waves RE1 and RE2 from the reflection members 11 and 12, respectively. As described above, in the measurement system 100, the first reflectance RT1 of the reflection member 11 is set higher than the second reflectance RT2 of the reflection member 12.
　従って、レーダ装置７０と反射部材１１，１２とを対面させて正確に配置した場合、反射部材１１による反射波ＲＥ１のレベルが距離Ｄ１においてピークレベルＰ１を示し、反射部材１２による反射波ＲＥ２のレベルが距離Ｄ２においてピークレベルＰ１より低いピークレベルＰ２を示す。 Therefore, when the radar device 70 and the reflecting members 11 and 12 are disposed facing each other correctly, the level of the reflected wave RE1 by the reflecting member 11 indicates the peak level P1 at the distance D1, and the level of the reflected wave RE2 by the reflecting member 12 Indicates a peak level P2 lower than the peak level P1 at the distance D2.
　レーダ装置７０と反射部材１１，１２とが所定の位置に正確に配置されていた場合、反射部材１１からの反射波ＲＥ１は、距離Ｄ１の位置に現れるが、２個ある反射部材１２それぞれからの反射波ＲＥ２は、同一の距離Ｄ２でそれぞれが重なり合うため、見分けることができない。言い換えれば、２個の反射部材１２それぞれからの反射波ＲＥ２がそれぞれ重なり合って見分けられない場合、レーダ装置７０と反射部材１１，１２とが正確に配置されていると判断することができる。 When the radar device 70 and the reflecting members 11 and 12 are accurately disposed at predetermined positions, the reflected wave RE1 from the reflecting member 11 appears at the position of the distance D1, but from each of the two reflecting members 12 The reflected waves RE2 can not be identified because they overlap each other at the same distance D2. In other words, when the reflected waves RE2 from the two reflecting members 12 overlap with each other and can not be distinguished, it can be determined that the radar device 70 and the reflecting members 11 and 12 are correctly disposed.
　逆に、レーダ装置７０と反射部材１１，１２とが所定の位置に配置されていなかった場合、反射部材１１からの反射波ＲＥ１は、距離Ｄ１の位置に現れず、また、２個の反射部材１２それぞれからの反射波ＲＥ２は、重なり合うことがない。 Conversely, when the radar device 70 and the reflecting members 11 and 12 are not arranged at predetermined positions, the reflected wave RE1 from the reflecting member 11 does not appear at the position of the distance D1, and two reflecting members The reflected waves RE2 from each of 12 do not overlap.
　例えば、図４（ａ）に示すように、レーダ装置７０が、本来の位置から－Ｘ方向に距離Ｌ１だけ離れて設置された場合、反射部材１１とレーダ装置７０との間の距離は、本来の距離Ｄ１より長い距離Ｄ２の距離まで離れてしまうことになる。尚、ここで、距離Ｌ１は、例えば、反射部材１１の中心と反射部材１２の中心との間の距離とする。 For example, as shown in FIG. 4A, when the radar device 70 is installed at a distance L1 in the -X direction from the original position, the distance between the reflecting member 11 and the radar device 70 is essentially the same. The distance D2 is longer than the distance D1. Here, the distance L1 is, for example, the distance between the center of the reflective member 11 and the center of the reflective member 12.
　この場合、反射部材１１の反射波ＲＥ１のピークは距離Ｄ２の位置にあり、反射部材１１の－Ｘ側にある反射部材１２の反射波ＲＥ２のピークは距離Ｄ１の位置にある。また、反射部材１１の＋Ｘ側にある反射部材１２の反射波ＲＥ２のピークは、距離Ｄ２よりも更に遠い距離Ｄ３の位置にある。 In this case, the peak of the reflected wave RE1 of the reflecting member 11 is at the position of the distance D2, and the peak of the reflected wave RE2 of the reflecting member 12 on the −X side of the reflecting member 11 is at the position of the distance D1. Further, the peak of the reflected wave RE2 of the reflecting member 12 on the + X side of the reflecting member 11 is at a position of a distance D3 which is further than the distance D2.
　このように、レーダ装置７０と反射部材１１，１２とが所定の位置に配置されていなかった場合、反射部材１１からの反射波ＲＥ１は、本来の距離Ｄ１の位置に現れず、また、２個の反射部材１２それぞれからの反射波ＲＥ２は、重なり合うことがなく、それぞれ異なる距離に表れる。 As described above, when the radar device 70 and the reflecting members 11 and 12 are not disposed at predetermined positions, the reflected wave RE1 from the reflecting member 11 does not appear at the position of the original distance D1, and two Reflected waves RE2 from the respective reflection members 12 do not overlap and appear at different distances.
　また、反射部材１１，１２を保持している設置面５０が、レーダ装置７０に対して正対しておらず、設置面５０が、レーダ装置７０に対して傾いていた場合においても、２個の反射部材１２それぞれからの反射波ＲＥ２は、重なり合うことがなく、それぞれ異なる距離に表れる。 Further, even when the installation surface 50 holding the reflection members 11 and 12 does not face the radar device 70 directly, and even when the installation surface 50 is inclined with respect to the radar device 70, the number of the two is two. The reflected waves RE2 from the reflective members 12 do not overlap and appear at different distances.
　例えば、図５（ａ）に示すように、設置面５０の－Ｘ側が、レーダ装置７０と正対する方向（Ｘ方向）に対して、傾き角φ１だけ外側に傾いていた場合、２個の反射部材１２とレーダ装置７０との間の距離は、それぞれ本来の距離Ｄ２とは異なった距離になってしまう。 For example, as shown in FIG. 5A, when the −X side of the installation surface 50 is inclined outward by an inclination angle φ1 with respect to the direction (X direction) facing the radar device 70, two reflections The distance between the member 12 and the radar device 70 is different from the original distance D2.
　反射部材１１の－Ｘ側にある反射部材１２とレーダ装置７０との間の距離は、本来の距離Ｄ２よりも長い距離Ｄ４になる。また、反射部材１１の＋Ｘ側にある反射部材１２とレーダ装置７０との間の距離は、本来の距離Ｄ２よりも短い距離Ｄ５になる。一方、反射部材１１とレーダ装置７０との間の距離は、本来の距離Ｄ１のままである。 The distance between the reflecting member 12 on the −X side of the reflecting member 11 and the radar device 70 is a distance D4 longer than the original distance D2. Further, the distance between the reflecting member 12 on the + X side of the reflecting member 11 and the radar device 70 is a distance D5 which is shorter than the original distance D2. On the other hand, the distance between the reflecting member 11 and the radar device 70 remains the original distance D1.
　そのため、反射部材１１の反射波ＲＥ１のピークは本来の距離Ｄ１の位置にあり、反射部材１１の－Ｘ側にある反射部材１２の反射波ＲＥ２のピークは本来の距離Ｄ２よりも遠い距離Ｄ４の位置にある。また、反射部材１１の＋Ｘ側にある反射部材１２の反射波ＲＥ２のピークは、本来の距離Ｄ２よりも近い距離Ｄ５の位置にある。 Therefore, the peak of the reflection wave RE1 of the reflection member 11 is at the position of the original distance D1, and the peak of the reflection wave RE2 of the reflection member 12 on the -X side of the reflection member 11 is a distance D4 longer than the original distance D2. In position. Further, the peak of the reflected wave RE2 of the reflecting member 12 on the + X side of the reflecting member 11 is at the position of the distance D5 closer to the original distance D2.
　従って、反射部材１１の反射波ＲＥ１のレベルが本来の距離Ｄ１の位置でピークレベルＰ１を示し、２個の反射部材１２の反射波ＲＥ２のピークレベルＰ２の位置が重なり合うことなく、距離Ｄ１の位置より遠い位置及び距離Ｄ１の位置より近い位置にあった場合、反射部材１１，１２を保持している設置面５０が、レーダ装置７０と正対する方向に対して傾いているということが分かる。測定系１００では、このようにして、レーダ装置７０又は反射部材１１，１２の位置ズレや角度ズレを検出することができ、位置ズレや角度ズレに対する対処が容易になる。位置ズレや角度ズレに対する対処方法としては、検出した位置ズレや角度ズレに対応してソフトウエア上で補正を行う方法が効果的であるが、検出した位置ズレや角度ズレに対応して反射部材１１，１２の位置を物理的に調整しても構わない。本実施形態では、反射部材１１，１２が、設置面５０に一体的に保持されているので、検出した位置ズレや角度ズレに対応して反射部材１１，１２の位置を物理的に調整する場合でも、反射部材１１，１２をまとめて移動させることができ、位置ズレや角度ズレに対する対処が容易になる。 Therefore, the level of the reflected wave RE1 of the reflecting member 11 indicates the peak level P1 at the position of the original distance D1, and the position of the peak level P2 of the reflected waves RE2 of the two reflecting members 12 does not overlap. It can be understood that the installation surface 50 holding the reflecting members 11 and 12 is inclined with respect to the direction directly facing the radar device 70 when it is at a farther position and a position closer than the position of the distance D1. Thus, the measurement system 100 can detect the positional deviation and the angular deviation of the radar device 70 or the reflecting members 11 and 12, and makes it easy to cope with the positional deviation and the angular deviation. As a method for coping with positional deviation and angular deviation, it is effective to perform correction on software corresponding to the detected positional deviation and angular deviation, but it is effective to reflect the detected positional deviation and angular deviation. The positions of 11 and 12 may be physically adjusted. In the present embodiment, since the reflecting members 11 and 12 are integrally held on the installation surface 50, in the case where the positions of the reflecting members 11 and 12 are physically adjusted according to the detected positional deviation or angular deviation. However, the reflecting members 11 and 12 can be moved together, which makes it easy to cope with positional deviation and angular deviation.
　［第１変形例］
　次に、図６及び図７を参照して、本発明のレーダ装置測定方法の第１変形例の測定系１１０の構成、及び測定系１１０におけるレーダ装置測定方法について説明する。図６は、図６（ａ）が第１変形例における測定系１１０を示す上面図であり、図６（ｂ）が各反射部材２１，２２からの反射波ＲＥ１，ＲＥ２のレベルを示す説明図である。また、図７は、図７（ａ）が第１変形例における反射部材２１，２２の配置を示す上面図であり、図７（ｂ）が正面図である。 First Modification
Next, with reference to FIG. 6 and FIG. 7, the configuration of the measurement system 110 of the first modified example of the radar device measurement method of the present invention and the radar device measurement method in the measurement system 110 will be described. 6 (a) is a top view showing the measurement system 110 in the first modification, and FIG. 6 (b) is an explanatory view showing the levels of the reflected waves RE1 and RE2 from the reflection members 21 and 22. It is. 7A is a top view showing the arrangement of the reflecting members 21 and 22 in the first modification, and FIG. 7B is a front view.
　尚、前述した本発明のレーダ装置測定方法の実施形態とその第１変形例との相違点は、測定系１１０における反射部材２１，２２の構成が測定系１００における反射部材１１，１２の構成と異なるだけである。そのため、その相違点に関する構成以外については、その説明を省略する。また、今後説明する第２変形例及び第３変形例においても、同様にその説明を省略する。 The difference between the embodiment of the radar device measuring method of the present invention and the first modification thereof described above is that the configuration of the reflecting members 21 and 22 in the measuring system 110 is the configuration of the reflecting members 11 and 12 in the measuring system 100 It only differs. Therefore, except for the configuration relating to the difference, the description thereof is omitted. Further, in the second and third modified examples to be described later, the description thereof is omitted in the same manner.
　本実施形態のレーダ装置測定方法の第１変形例のための測定系１１０は、図６（ａ）に示すように、反射部材群２０と、反射部材群２０が設置された設置面５０と、被測定物であるレーダ装置７０とで構成される。反射部材群２０は、反射部材を複数（２個）備えている。具体的には、１個の反射部材２１と１個の反射部材２２とから成る。 As shown in FIG. 6A, a measurement system 110 for a first modification of the radar device measurement method of the present embodiment includes a reflection member group 20 and an installation surface 50 on which the reflection member group 20 is installed; The radar apparatus 70 is an object to be measured. The reflective member group 20 includes a plurality of (two) reflective members. Specifically, it comprises one reflecting member 21 and one reflecting member 22.
　測定系１１０における反射部材群２０では、図６（ａ）、図７（ａ）、図７（ｂ）に示すように、反射部材２１及び反射部材２２が、一体的に保持されていると共に、設置面５０上で１列に並べて配置されている。反射部材２１及び反射部材２２は、放射波ＲＡ１の放射方向と直交する方向に並べて配置されている。 In the reflection member group 20 in the measurement system 110, as shown in FIGS. 6 (a), 7 (a) and 7 (b), the reflection member 21 and the reflection member 22 are integrally held, and They are arranged in a row on the installation surface 50. The reflecting member 21 and the reflecting member 22 are arranged in a direction orthogonal to the radiation direction of the radiation wave RA1.
　反射部材２１とレーダ装置７０とは、距離Ｄ１を隔てて、互いに正対するように配置されている。また、反射部材２２とレーダ装置７０とは、放射波ＲＡ１の放射方向に対し所定の角度を有すると共に、距離Ｄ１よりも大きな距離Ｄ２を隔てて配置されている。 The reflecting member 21 and the radar device 70 are disposed to face each other at a distance D1. The reflecting member 22 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
　測定系１１０では、反射部材２１の第１反射率ＲＴ１が、反射部材２２の第２反射率ＲＴ２よりも高く設定されている。尚、反射部材２１の第１反射率ＲＴ１が、反射部材２２の第２反射率ＲＴ２よりも低く設定されていてもよい。 In the measurement system 110, the first reflectance RT1 of the reflective member 21 is set to be higher than the second reflectance RT2 of the reflective member 22. The first reflectance RT1 of the reflecting member 21 may be set to be lower than the second reflectance RT2 of the reflecting member 22.
　図６（ｂ）には、反射部材２１，２２それぞれからの反射波ＲＥ１，ＲＥ２のレベルが示されている。前述したように、測定系１１０では、反射部材２１の第１反射率ＲＴ１が、反射部材２２の第２反射率ＲＴ２よりも高く設定されている。 FIG. 6B shows the levels of the reflected waves RE1 and RE2 from the reflection members 21 and 22, respectively. As described above, in the measurement system 110, the first reflectance RT1 of the reflecting member 21 is set to be higher than the second reflectance RT2 of the reflecting member 22.
　従って、レーダ装置７０と反射部材２１，２２とを所定の位置に正確に配置した場合、反射部材２１による反射波ＲＥ１のレベルが距離Ｄ１においてピークレベルＰ１を示し、反射部材２２による反射波ＲＥ２のレベルが距離Ｄ２においてピークレベルＰ１より低いピークレベルＰ２を示す。 Therefore, when the radar device 70 and the reflecting members 21 and 22 are accurately disposed at predetermined positions, the level of the reflected wave RE1 by the reflecting member 21 indicates the peak level P1 at the distance D1, and the reflected wave RE2 by the reflecting member 22 The peak level P2 is lower than the peak level P1 at a distance D2.
　言い換えれば、このように反射部材２１による反射波ＲＥ１のレベルが距離Ｄ１においてピークレベルＰ１を示し、反射部材２２による反射波ＲＥ２のレベルが距離Ｄ２においてピークレベルＰ１より低いレベルのピークレベルＰ２を示した場合、レーダ装置７０と反射部材２１，２２とが正確に配置されていると判断することができる。 In other words, the level of the reflected wave RE1 by the reflecting member 21 indicates the peak level P1 at the distance D1, and the level of the reflected wave RE2 by the reflecting member 22 indicates the peak level P2 at the distance D2 lower than the peak level P1. In this case, it can be determined that the radar device 70 and the reflecting members 21 and 22 are correctly disposed.
　このように、本実施形態のレーダ装置測定方法の第１変形例のための測定系１１０では、反射部材群２０を２個の反射部材２１，２２だけで構成することができるため、測定系１１０の構成を簡略にすることができる。 As described above, in the measurement system 110 for the first modified example of the radar device measurement method of the present embodiment, the reflection member group 20 can be configured with only the two reflection members 21 and 22, and thus the measurement system 110. Can be simplified.
　尚、レーダ装置７０と反射部材２１，２２とが所定の位置に配置されていなかった場合や、反射部材２１，２２を保持している設置面５０が、レーダ装置７０に対して傾いていた場合における動作及びその効果については、本実施形態のレーダ装置測定方法のための測定系１００の場合と同様である。そのため、その説明を省略する。また、今後説明する第２変形例及び第３変形例においても、同様にその説明を省略する。 When the radar device 70 and the reflection members 21 and 22 are not disposed at predetermined positions, or when the installation surface 50 holding the reflection members 21 and 22 is inclined with respect to the radar device 70 The operation of the second embodiment and the effects thereof are the same as those of the measurement system 100 for the radar device measurement method of the present embodiment. Therefore, the description is omitted. Further, in the second and third modified examples to be described later, the description thereof is omitted in the same manner.
　［第２変形例］
　次に、図８及び図９を参照して、本発明のレーダ装置測定方法の第２変形例の測定系１２０の構成、及び測定系１２０におけるレーダ装置測定方法について説明する。図８は、図８（ａ）が第２変形例における測定系１２０を示す上面図であり、図８（ｂ）が各反射部材３１，３２，３３からの反射波ＲＥ１，ＲＥ２，ＲＥ３のレベルを示す説明図である。また、図９は、図９（ａ）が第２変形例における反射部材３１，３２，３３の配置を示す上面図であり、図９（ｂ）が正面図である。 Second Modified Example
Next, with reference to FIG. 8 and FIG. 9, the configuration of the measurement system 120 of the second modification of the radar device measurement method of the present invention and the radar device measurement method in the measurement system 120 will be described. 8 (a) is a top view showing the measurement system 120 in the second modification, and FIG. 8 (b) is the level of the reflected waves RE1, RE2 and RE3 from the respective reflection members 31, 32 and 33. FIG. Further, FIG. 9 is a top view showing the arrangement of the reflecting members 31, 32 and 33 in FIG. 9 (a) according to the second modification, and FIG. 9 (b) is a front view.
　本実施形態のレーダ装置測定方法の第２変形例のための測定系１２０は、図８（ａ）に示すように、反射部材群３０と、反射部材群３０が設置された設置面５０と、被測定物であるレーダ装置７０とで構成される。設置面５０は、放射波ＲＡ１の放射方向に対して直交するように配設されている。 As shown in FIG. 8A, a measurement system 120 for a second modification of the radar device measurement method of this embodiment includes a reflection member group 30 and an installation surface 50 on which the reflection member group 30 is installed; The radar apparatus 70 is an object to be measured. The installation surface 50 is disposed to be orthogonal to the radiation direction of the radiation wave RA1.
　反射部材群３０は、図８（ａ）、図９（ａ）、図９（ｂ）に示すように、反射部材を３個備えていると共に、３個の反射部材が設置面５０上で１列に並べて配置されている。具体的には、１個の反射部材３１と１個の反射部材３２と１個の反射部材３３とから成る。 As shown in FIGS. 8A, 9A, and 9B, the reflection member group 30 includes three reflection members, and three reflection members are provided on the installation surface 50 by one. It is arranged side by side in a column. Specifically, it comprises one reflecting member 31, one reflecting member 32 and one reflecting member 33.
　反射部材３１とレーダ装置７０とは、図８（ａ）に示すように、距離Ｄ１を隔てて、互いに正対するように配置されている。また、反射部材３２及び反射部材３３とレーダ装置７０とは、放射波ＲＡ１の放射方向に対し所定の角度を有すると共に、距離Ｄ１よりも大きな距離Ｄ２を隔てて配置されている。 The reflecting member 31 and the radar device 70 are disposed to face each other at a distance D1 as shown in FIG. 8A. The reflecting member 32 and the reflecting member 33, and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
　ここで、反射部材３１、３２、３３それぞれの反射率は、互いに異なっている。即ち、反射部材３１、３２、３３のうちの中央の反射部材３１が第１反射率ＲＴ１を有すると共に、他の２個の反射部材３２、３３のうちの＋Ｘ側の反射部材３２が、第１反射率ＲＴ１とは異なる第２反射率ＲＴ２を有し、－Ｘ側の反射部材３３が、第１反射率ＲＴ１及び第２反射率ＲＴ２とは異なる第３反射率ＲＴ３を有する。 Here, the reflectances of the reflective members 31, 32, and 33 are different from each other. That is, the reflective member 31 at the center of the reflective members 31, 32, 33 has the first reflectance RT1, and the reflective member 32 on the + X side of the other two reflective members 32, 33 has the first reflectance. The reflection member 33 on the −X side has a second reflectance RT2 different from the reflectance RT1, and the third reflectance RT3 different from the first reflectance RT1 and the second reflectance RT2.
　測定系１２０では、反射部材３１の第１反射率ＲＴ１が、反射部材３１乃至反射部材３３の中で最も高く設定されており、反射部材３３の第３反射率ＲＴ３が、反射部材３１乃至反射部材３３の中で最も低く設定されている。また、反射部材３２の第２反射率ＲＴ２が、第１反射率ＲＴ１と第３反射率ＲＴ３との中間の反射率に設定されている。 In the measurement system 120, the first reflectance RT1 of the reflection member 31 is set to the highest of the reflection members 31 to 33, and the third reflectance RT3 of the reflection member 33 is the reflection member 31 to the reflection member. It is set the lowest among 33. Further, the second reflectance RT2 of the reflecting member 32 is set to a reflectance between the first reflectance RT1 and the third reflectance RT3.
　図８（ｂ）には、反射部材３１，３２，３３それぞれからの反射波ＲＥ１，ＲＥ２，ＲＥ３のレベルが示されている。前述したように、測定系１２０では、反射部材３１の第１反射率ＲＴ１が、最も高く設定されており、反射部材３２の第２反射率ＲＴ２が、次に高く設定されており、反射部材３３の第３反射率ＲＴ３が、最も低く設定されている。 FIG. 8B shows the levels of the reflected waves RE1, RE2, and RE3 from the reflecting members 31, 32, and 33, respectively. As described above, in the measurement system 120, the first reflectance RT1 of the reflecting member 31 is set to the highest, and the second reflectance RT2 of the reflecting member 32 is set to the next highest. The third reflectance RT3 of is set to the lowest.
　従って、レーダ装置７０と反射部材３１，３２，３３とを対面させて正確に配置した場合、反射部材３１による反射波ＲＥ１のレベルが距離Ｄ１において最も高いピークレベルＰ１を示し、反射部材３２による反射波ＲＥ２のレベルが距離Ｄ２においてピークレベルＰ１より低いピークレベルＰ２を示し、反射部材３３による反射波ＲＥ３のレベルが距離Ｄ２においてピークレベルＰ２より低いピークレベルＰ３を示す。 Therefore, when the radar device 70 and the reflecting members 31, 32, and 33 are disposed facing each other correctly, the level of the reflected wave RE1 by the reflecting member 31 shows the highest peak level P1 at the distance D1, and the reflection by the reflecting member 32 The level of the wave RE2 shows a peak level P2 lower than the peak level P1 at the distance D2, and the level of the reflected wave RE3 by the reflecting member 33 shows a peak level P3 lower than the peak level P2 at the distance D2.
　レーダ装置７０と反射部材３１，３２，３３とが所定の位置に正確に配置されていた場合、反射部材３２，３３それぞれからの反射波ＲＥ２，ＲＥ３は、同一の距離Ｄ２でそれぞれが重なり合うため、見分けることができない。言い換えれば、反射部材３２，３３それぞれからの反射波ＲＥ２と反射波ＲＥ３とがそれぞれ重なり合って見分けられない場合、レーダ装置７０と反射部材３１，３２，３３とが正確に配置されていると判断することができる。 When the radar device 70 and the reflecting members 31, 32, and 33 are accurately disposed at predetermined positions, the reflected waves RE2 and RE3 from the reflecting members 32 and 33 overlap with each other at the same distance D2, respectively. I can not distinguish. In other words, when the reflected wave RE2 and the reflected wave RE3 from the reflection members 32 and 33 overlap with each other and can not be distinguished, it is determined that the radar device 70 and the reflection members 31, 32 and 33 are correctly disposed. be able to.
　逆に、レーダ装置７０と反射部材３１，３２，３３とが所定の位置に配置されていなかった場合、反射部材３１からの反射波ＲＥ１は、距離Ｄ１の位置に現れず、また、反射部材３２，３３それぞれからの反射波ＲＥ２と反射波ＲＥ３とは、測定系１００の場合と同様に重なり合うことがなく、それぞれ異なる距離に表れる。 Conversely, when the radar device 70 and the reflecting members 31, 32, 33 are not arranged at predetermined positions, the reflected wave RE1 from the reflecting member 31 does not appear at the position of the distance D1, and the reflecting member 32 33 and the reflected wave RE3 do not overlap with each other as in the case of the measurement system 100, and appear at different distances.
　尚、測定系１２０の場合、反射波ＲＥ２のピークレベルと反射波ＲＥ３のピークレベルは、その大きさが異なるため、測定系１００の場合とは異なり、反射波ＲＥ２とＲＥ３とが重ならず、それぞれ異なる距離に表れている場合、表れている２つのピークのうちのどっちのピークが反射波ＲＥ２のピークか、反射波ＲＥ３のピークか、を容易に判別することができる。 In the case of the measurement system 120, the peak level of the reflected wave RE2 and the peak level of the reflected wave RE3 are different in magnitude, so that the reflected waves RE2 and RE3 do not overlap unlike the case of the measurement system 100. When appearing at different distances, it is possible to easily determine which one of the two appearing peaks is the peak of the reflected wave RE2 or the peak of the reflected wave RE3.
　［第３変形例］
　次に、図１０及び図１１を参照して、本発明のレーダ装置測定方法の第３変形例の測定系１３０の構成、及び測定系１３０におけるレーダ装置測定方法について説明する。図１０は、図１０（ａ）が第３変形例における測定系１３０を示す上面図であり、図１０（ｂ）が各反射部材４１，４２からの反射波ＲＥ１，ＲＥ２のレベルを示す説明図である。また、図１１は、図１１（ａ）が第３変形例における反射部材４１，４２の配置を示す上面図であり、図１１（ｂ）が正面図である。 Third Modification
Next, with reference to FIG. 10 and FIG. 11, the configuration of the measurement system 130 of the third modified example of the radar device measurement method of the present invention and the radar device measurement method in the measurement system 130 will be described. FIG. 10 is a top view of FIG. 10A showing the measurement system 130 in the third modification, and FIG. 10B is an explanatory view showing the levels of the reflected waves RE1 and RE2 from the respective reflection members 41 and 42. It is. 11A is a top view showing the arrangement of the reflecting members 41 and 42 in the third modification, and FIG. 11B is a front view.
　本実施形態のレーダ装置測定方法の第３変形例のための測定系１３０は、図１０（ａ）に示すように、反射部材群４０と、反射部材群４０が設置された設置面５０と、被測定物であるレーダ装置７０とで構成される。反射部材群４０は、反射部材を複数（５個）備えている。具体的には、１個の反射部材４１と４個の反射部材４２とから成る。 As shown in FIG. 10A, the measurement system 130 for the third modification of the radar device measurement method of the present embodiment includes a reflection member group 40 and an installation surface 50 on which the reflection member group 40 is installed; The radar apparatus 70 is an object to be measured. The reflective member group 40 includes a plurality of (five) reflective members. Specifically, it consists of one reflecting member 41 and four reflecting members 42.
　反射部材群４０は、図１０（ａ）に示すように、設置面５０が、放射波ＲＡ１の放射方向（Ｙ方向）に対して直交するように配設されていると共に、この直交する面に立設するように設けられている。反射部材群４０は、図１１（ｂ）に示すように、設置面５０の中央に反射部材４１が配置され、４個の反射部材４２が、反射部材４１の上下及び左右に配置されている。即ち、５個の反射部材４１，４２が設置面５０上で直交するように配置されている。 As shown in FIG. 10A, the reflection member group 40 is disposed such that the installation surface 50 is orthogonal to the radiation direction (Y direction) of the radiation wave RA1, and the reflection member group 40 is on this orthogonal plane. It is provided to stand up. As shown in FIG. 11B, in the reflective member group 40, the reflective member 41 is disposed at the center of the installation surface 50, and the four reflective members 42 are disposed vertically and laterally of the reflective member 41. That is, the five reflection members 41 and 42 are disposed to be orthogonal to each other on the installation surface 50.
　反射部材４１とレーダ装置７０とは、図１０（ａ）に示すように、距離Ｄ１を隔てて、互いに正対するように配置されている。また、各反射部材４２とレーダ装置７０とは、放射波ＲＡ１の放射方向に対し所定の角度を有すると共に、距離Ｄ１よりも大きな距離Ｄ２を隔てて配置されている。 As shown in FIG. 10A, the reflecting member 41 and the radar device 70 are disposed to face each other at a distance D1. Further, each reflecting member 42 and the radar device 70 have a predetermined angle with respect to the radiation direction of the radiation wave RA1, and are disposed at a distance D2 larger than the distance D1.
　測定系１３０では、反射部材４１が、第１反射率ＲＴ１を有すると共に、４個の反射部材４２それぞれが、第１反射率ＲＴ１とは異なる第２反射率ＲＴ２を有する。ここで、第１反射率ＲＴ１は、第２反射率ＲＴ２よりも高く設定されている。 In the measurement system 130, the reflecting member 41 has the first reflectance RT1, and each of the four reflecting members 42 has the second reflectance RT2 different from the first reflectance RT1. Here, the first reflectance RT1 is set higher than the second reflectance RT2.
　図１０（ｂ）には、反射部材４１，４２それぞれからの反射波ＲＥ１，ＲＥ２のレベルが示されている。前述したように、測定系１３０では、反射部材４１の第１反射率ＲＴ１が、各反射部材４２の第２反射率ＲＴ２より高く設定されている。 FIG. 10B shows the levels of the reflected waves RE1 and RE2 from the reflection members 41 and 42, respectively. As described above, in the measurement system 130, the first reflectance RT1 of the reflecting member 41 is set to be higher than the second reflectance RT2 of each of the reflecting members 42.
　従って、レーダ装置７０と反射部材４１，４２とを対面させて正確に配置した場合、反射部材４１による反射波ＲＥ１のレベルが距離Ｄ１においてピークレベルＰ１を示し、反射部材４２による反射波ＲＥ２のレベルが距離Ｄ２においてピークレベルＰ１より低いピークレベルＰ２を示す。 Therefore, when the radar device 70 and the reflecting members 41 and 42 are disposed facing each other correctly, the level of the reflected wave RE1 by the reflecting member 41 indicates the peak level P1 at the distance D1, and the level of the reflected wave RE2 by the reflecting member 42 Indicates a peak level P2 lower than the peak level P1 at the distance D2.
　レーダ装置７０と反射部材４１，４２とが所定の位置に正確に配置されていた場合、各反射部材４２それぞれからの反射波ＲＥ２は、同一の距離Ｄ２でそれぞれが重なり合うため、見分けることができない。言い換えれば、反射部材４２それぞれからの複数の反射波ＲＥ２それぞれが重なり合って見分けられない場合、レーダ装置７０と各反射部材４２とが正確に配置されていると判断することができる。 When the radar device 70 and the reflecting members 41 and 42 are accurately disposed at predetermined positions, the reflected waves RE2 from the respective reflecting members 42 can not be distinguished because they overlap each other at the same distance D2. In other words, when the plurality of reflected waves RE2 from the respective reflection members 42 overlap and can not be distinguished, it can be determined that the radar device 70 and the respective reflection members 42 are correctly disposed.
　逆に、レーダ装置７０と反射部材４１，４２とが所定の位置に正確に配置されていなかった場合、反射部材４１からの反射波ＲＥ１は、距離Ｄ１の位置に現れず、また、各反射部材４２それぞれからの複数の反射波ＲＥ２は、測定系１００の場合と同様に重なり合うことがなく、それぞれ異なる距離に表れる。 On the contrary, when the radar device 70 and the reflecting members 41 and 42 are not correctly disposed at predetermined positions, the reflected wave RE1 from the reflecting member 41 does not appear at the position of the distance D1, and each reflecting member As in the case of the measurement system 100, the plurality of reflected waves RE2 from each of the plurality 42 do not overlap, and appear at different distances.
　尚、測定系１３０の場合、反射部材４２の数、即ち各反射波ＲＥ２の数が測定系１００の場合より多いため、レーダ装置７０と反射部材４１，４２との配置の正確さを、より正しく判断することができる。 In the case of measurement system 130, the number of reflection members 42, that is, the number of each reflected wave RE2 is larger than in the case of measurement system 100, so the accuracy of the arrangement of radar device 70 and reflection members 41 and 42 is more correct. It can be judged.
　以下、本実施形態としたことによる効果について説明する。 Hereinafter, the effects of the present embodiment will be described.
　本レーダ装置測定方法では、複数の反射部材１１，１２を一体的に保持し、それら反射部材１１，１２の反射率を異なせているため、受信レベルの大きさに基づいてどの反射部材からの反射波かを識別し易くなる。その結果、測定時間を短縮すると共に、校正精度を容易に高めることができる。 In this radar device measuring method, the plurality of reflecting members 11 and 12 are integrally held, and the reflectances of the reflecting members 11 and 12 are made different from each other. It becomes easy to identify whether it is a reflected wave. As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
　また、放射波がミリ波帯の電波信号であるため、その波長が短い。従って、反射部材１１，１２又はレーダ装置７０の位置ズレ及び角度ズレの検出精度を高めることが容易に可能になる。 Also, since the radiation wave is a millimeter wave band radio signal, its wavelength is short. Therefore, it is possible to easily improve the detection accuracy of the positional deviation and the angular deviation of the reflecting members 11 and 12 or the radar device 70.
　また、反射部材１１，１２としてコーナ・キューブ・リフレクタを使用するため、放射波ＲＡ１をその到来方向に反射させることが容易にできる。従って、レーダ装置７０の校正に適している。 Further, since the corner cube reflector is used as the reflecting members 11 and 12, the radiation wave RA1 can be easily reflected in the direction of arrival. Therefore, it is suitable for calibration of the radar device 70.
　また、測定系１００を用いた測定方法では、反射部材１１，１２を３個並べて配置したので、反射部材１１，１２又はレーダ装置７０の位置ズレ及び角度ズレを、精度良く検出することができる。 Further, in the measurement method using the measurement system 100, since the three reflecting members 11 and 12 are arranged side by side, the positional deviation and the angular deviation of the reflecting members 11 and 12 or the radar device 70 can be detected with high accuracy.
　また、３個の反射部材１１，１２のうちの中央の反射部材１１の反射率を、他の反射部材１２の反射率とは異ならせたので、反射部材１１，１２又はレーダ装置７０の位置ズレ及び角度ズレを、より精度良く検出することができる。 In addition, since the reflectance of the central reflecting member 11 of the three reflecting members 11 and 12 is made different from the reflectance of the other reflecting members 12, the positional deviation of the reflecting members 11, 12 or the radar device 70 And angular deviation can be detected more accurately.
　また、測定系１１０を用いた測定方法では、反射部材群２０を２個の反射部材２１，２２だけで構成することができるため、当該測定系１１０の構成を簡略にすることができる。 Further, in the measurement method using the measurement system 110, the reflection member group 20 can be configured of only the two reflection members 21 and 22, so the configuration of the measurement system 110 can be simplified.
　また、測定系１２０を用いた測定方法では、３個の反射部材３１，３２，３３それぞれの反射率を異ならせたので、反射部材３１，３２，３３又はレーダ装置７０の位置ズレ及び角度ズレを、更に精度良く検出することができる。 Further, in the measurement method using the measurement system 120, the respective reflectances of the three reflection members 31, 32, 33 are made different, so positional deviation and angular deviation of the reflection members 31, 32, 33 or the radar device 70 can be obtained. It can be detected more accurately.
　また、測定系１３０を用いた測定方法は、直交するように配置された５個の反射部材４１，４２のうちの中央の反射部材４１の反射率を、他の反射部材４２の反射率とは異ならせたので、反射部材４１，４２が配置されている直交する方向それぞれの、反射部材４１，４２又はレーダ装置７０の位置ズレ及び角度ズレを、どちらの方向も精度良く検出することができる。 Further, in the measurement method using the measurement system 130, the reflectance of the central reflection member 41 among the five reflection members 41 and 42 disposed orthogonally to the reflectance of the other reflection members 42 is Because they are different from each other, positional deviation and angular deviation of the reflecting members 41 and 42 or the radar device 70 in the orthogonal directions in which the reflecting members 41 and 42 are arranged can be detected with high accuracy in either direction.
　以上説明したように、本発明のレーダ装置測定方法は、複数の反射部材を一体的に保持し、それら反射部材の反射率を異なせているため、受信レベルの大きさに基づいてどの反射部材からの反射波かを識別し易くなる。その結果、測定時間を短縮すると共に、校正精度を容易に高めることができる。 As described above, in the radar device measuring method of the present invention, since the plurality of reflecting members are integrally held and the reflectances of the reflecting members are different, which reflecting member is used based on the magnitude of the reception level It is easy to identify the reflected wave from As a result, the measurement time can be shortened and the calibration accuracy can be easily enhanced.
　本発明は上記の実施形態に限定されるものではなく、要旨を逸脱しない範囲で種々変更して実施することが可能である。例えば、本実施形態では、レーダ装置が位置ズレした場合について説明したが、反射部材が位置ズレした場合についても、その効果は同一である。また、同様に、反射部材が角度ズレした場合について説明したが、レーダ装置が角度ズレした場合についても、その効果は同一である。 The present invention is not limited to the above embodiment, and can be implemented with various modifications without departing from the scope of the invention. For example, in the present embodiment, the case where the positional deviation of the radar device has been described has been described, but the effect is the same even when the positional deviation of the reflecting member occurs. Similarly, although the case where the reflecting member is angularly displaced has been described, the effect is the same even when the radar device is angularly displaced.
　１０　　　　反射部材群
　１０ａ　　　反射面
　１１　　　　反射部材
　１２　　　　反射部材
　２０　　　　反射部材群
　２１　　　　反射部材
　２２　　　　反射部材
　３０　　　　反射部材群
　３１　　　　反射部材
　３２　　　　反射部材
　３３　　　　反射部材
　４０　　　　反射部材群
　４１　　　　反射部材
　４２　　　　反射部材
　５０　　　　設置面
　７０　　　　レーダ装置
　７１　　　　アンテナ
　１００　　　測定系
　１１０　　　測定系
　１２０　　　測定系
　１３０　　　測定系
　ＲＡ１　　　放射波
　ＲＥ１　　　反射波
　ＲＥ２　　　反射波
　ＲＥ３　　　反射波
　ＲＴ１　　　第１反射率
　ＲＴ２　　　第２反射率
　ＲＴ３　　　第３反射率 DESCRIPTION OF SYMBOLS 10 reflective member group 10a reflective surface 11 reflective member 12 reflective member 20 reflective member group 21 reflective member 22 reflective member 30 reflective member group 31 reflective member 32 reflective member 33 reflective member 40 reflective member group 41 reflective member 42 reflective member 50 installation surface 70 Radar device 71 Antenna 100 Measurement system 110 Measurement system 120 Measurement system 130 Measurement system RA1 Radiation wave RE1 Reflection wave RE2 Reflection wave RE3 Reflection wave RT1 1st reflectivity RT2 2nd reflectivity RT3 3rd reflectivity

Claims (7)

  1. 　所定の反射率を有する反射部材を複数備え、レーダ装置から放射される放射波の放射方向に当該レーダ装置と対向するように前記反射部材を配置し、前記反射部材からの反射波に基づいて特性測定を行うレーダ装置測定方法であって、
    　複数の前記反射部材が、前記放射方向と交差する方向に配設された設置面に一体的に保持されると共に、並べて配置されており、
    　複数の前記反射部材のうちの、少なくとも２個の前記反射部材は、互いに異なる反射率を有している、
    ことを特徴とするレーダ装置測定方法。     A plurality of reflecting members having a predetermined reflectance are provided, the reflecting member is disposed to face the radar device in the radiation direction of the radiation wave emitted from the radar device, and the characteristic is based on the reflected wave from the reflecting member A radar device measuring method for measuring
    A plurality of the reflecting members are integrally held on a mounting surface disposed in a direction intersecting the radial direction, and are disposed side by side,
    Of the plurality of reflective members, at least two of the reflective members have different reflectivities from one another.
    The radar apparatus measuring method characterized by the above.
  2. 　前記放射波は、ミリ波帯の電波信号である、
    ことを特徴とする請求項１に記載のレーダ装置測定方法。     The radiation is a millimeter wave band radio signal,
    The radar device measurement method according to claim 1, characterized in that:
  3. 　前記反射部材は、コーナ・キューブ・リフレクタである、
    ことを特徴とする請求項１又は請求項２に記載のレーダ装置測定方法。     The reflecting member is a corner cube reflector,
    The radar apparatus measurement method according to claim 1 or 2, characterized in that:
  4. 　前記設置面が前記放射方向に対して直交するように配設されており、
    　前記反射部材を３個備えていると共に、３個の前記反射部材が前記設置面上で１列に並べて配置されている、
    ことを特徴とする請求項１乃至請求項３のいずれかに記載のレーダ装置測定方法。     The installation surface is disposed orthogonal to the radiation direction,
    The three reflecting members are provided, and the three reflecting members are arranged in a line on the installation surface.
    The radar apparatus measurement method according to any one of claims 1 to 3, characterized in that:
  5. 　３個の前記反射部材のうちの中央の前記反射部材が第１反射率を有すると共に、
    　他の２個の前記反射部材が共に、前記第１反射率とは異なる第２反射率を有する、
    ことを特徴とする請求項４に記載のレーダ装置測定方法。     The reflective member at the center of the three reflective members has a first reflectance, and
    The other two reflective members both have a second reflectance different from the first reflectance,
    The radar apparatus measurement method according to claim 4,
  6. 　３個の前記反射部材のうちの中央の前記反射部材が第１反射率を有し、他の１個の前記反射部材が前記第１反射率とは異なる第２反射率を有し、更に他の１個の前記反射部材が前記第１反射率及び前記第２反射率とは異なる第３反射率を有する、
    ことを特徴とする請求項４に記載のレーダ装置測定方法。     The reflective member at the center of the three reflective members has a first reflectance, and the other one has a second reflectance different from the first reflectance, and the other One of the reflecting members has a third reflectance different from the first reflectance and the second reflectance,
    The radar apparatus measurement method according to claim 4,
  7. 　前記設置面が前記放射方向に対して直交するように配設されており、
    　前記反射部材を５個備えていると共に、５個の前記反射部材が前記設置面上で直交するように配置されていて、
    　５個の前記反射部材のうちの中央の前記反射部材が第１反射率を有すると共に、他の前記反射部材が前記第１反射率とは異なる第２反射率を有する、
    ことを特徴とする請求項１乃至請求項３のいずれかに記載のレーダ装置測定方法。     The installation surface is disposed orthogonal to the radiation direction,
    The five reflecting members are provided, and the five reflecting members are disposed orthogonally on the installation surface,
    The reflective member at the center of the five reflective members has a first reflectance, and the other reflective members have a second reflectance different from the first reflectance.
    The radar apparatus measurement method according to any one of claims 1 to 3, characterized in that:
PCT/JP2018/025994 2017-08-30 2018-07-10 Radar device measurement method WO2019044183A1 (en)

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