CN110361706B - Radar antenna array surface normal azimuth angle measuring device and method - Google Patents

Radar antenna array surface normal azimuth angle measuring device and method Download PDF

Info

Publication number
CN110361706B
CN110361706B CN201910587666.4A CN201910587666A CN110361706B CN 110361706 B CN110361706 B CN 110361706B CN 201910587666 A CN201910587666 A CN 201910587666A CN 110361706 B CN110361706 B CN 110361706B
Authority
CN
China
Prior art keywords
antenna array
array surface
azimuth
radar antenna
azimuth angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910587666.4A
Other languages
Chinese (zh)
Other versions
CN110361706A (en
Inventor
杨军佳
齐根华
刘志青
马卓
赵海涛
翟霄飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
People's Liberation Army Army Artillery Air Defense Academy Zhengzhou Campus
Original Assignee
People's Liberation Army Army Artillery Air Defense Academy Zhengzhou Campus
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by People's Liberation Army Army Artillery Air Defense Academy Zhengzhou Campus filed Critical People's Liberation Army Army Artillery Air Defense Academy Zhengzhou Campus
Priority to CN201910587666.4A priority Critical patent/CN110361706B/en
Publication of CN110361706A publication Critical patent/CN110361706A/en
Application granted granted Critical
Publication of CN110361706B publication Critical patent/CN110361706B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4026—Antenna boresight
    • 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
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4026—Antenna boresight
    • G01S7/403—Antenna boresight in azimuth, i.e. in the horizontal plane

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention discloses a device and a method for measuring the normal azimuth angle of a radar antenna array surface. The device comprises a measuring and calculating unit, an observing unit, a central processing unit, a display unit, an output interface, a keyboard and a power supply for supplying power to the whole device, wherein the measuring and calculating unit is used for measuring the azimuth of the observing unit of the radar antenna array surface normal azimuth angle measuring device to obtain the azimuth angle of the observing unit, the observing unit is used for aiming and observing the antenna array surface to obtain the observation information of the antenna array surface, and the central processing unit is used for fusing the azimuth angle of the observing unit and the observation information of the antenna array surface to obtain the azimuth angle information of the radar antenna array surface normal. The invention also discloses a method for measuring the normal azimuth angle of the radar antenna array surface. The device and the method provide a convenient and efficient radar antenna array surface normal azimuth angle measurement technical means.

Description

Radar antenna array surface normal azimuth angle measuring device and method
Technical Field
The invention relates to the technical field of radar antenna array surface normal azimuth angle measurement, in particular to a device and a method for measuring radar antenna array surface normal azimuth angle.
Background
The measurement of the azimuth angle of the normal line of the radar antenna array surface is an important basis for the radar to accurately detect the target. In the prior art, the technical means adopted for measuring the azimuth angle of the normal line of the radar antenna array surface is mainly a gyro north finder, and although the measurement efficiency is high, the gyro north finder has a certain failure rate and has high requirements on the surrounding environment.
Disclosure of Invention
The invention mainly solves the technical problem of providing a radar antenna array surface normal azimuth angle measuring device and method, and solves the problems of high failure rate and high requirement on the surrounding environment in the prior art.
In order to solve the above technical problems, one technical solution adopted by the present invention is to provide a radar antenna array surface normal azimuth angle measuring device, which includes a measuring and calculating unit, an observing unit, a central processing unit, a display unit, an output interface, a keyboard and a power supply for supplying power to the whole device, wherein the measuring and calculating unit is used for measuring the direction of the observing unit to obtain the azimuth angle of the observing unit, the observing unit is used for performing aiming observation on the antenna array surface to obtain antenna array surface observation information, the central processing unit performs fusion calculation processing on the azimuth angle of the observing unit and the antenna array surface observation information to obtain radar antenna array surface normal azimuth angle information, the display unit is used for displaying the azimuth angle of the observing unit, the antenna observation array surface information and the radar antenna array surface normal azimuth angle information, the output interface is used for interconnecting with external equipment, and outputting the normal azimuth angle information of the radar antenna array surface to external equipment, wherein the keyboard is used for carrying out parameter setting and information input on the radar antenna array surface normal azimuth angle measuring device.
In another embodiment of the radar antenna array surface normal azimuth measuring device, the measuring and calculating unit comprises a horizontal adjusting module, a north positioning module, an azimuth adjusting screw and an azimuth dial module, wherein the horizontal adjusting module is used for horizontally adjusting the radar antenna array surface normal azimuth measuring device, the north positioning module is used for determining a reference azimuth of the radar antenna array surface normal azimuth measuring device, the azimuth adjusting screw is used for locking the rotation of an observation lens barrel of the radar antenna array surface normal azimuth measuring device, and the azimuth dial module is used for determining an included angle between the observation lens barrel of the radar antenna array surface normal azimuth measuring device and the reference azimuth; the observation unit comprises an objective lens, a first prism, a second prism, a transverse reticle, a longitudinal reticle and an eyepiece which are arranged in an observation lens barrel, and a spiral regulator for regulating the position of the transverse reticle, wherein light rays enter the objective lens, then change a light path through the first prism and the second prism, and then are optically observed through the eyepiece through the transverse reticle and the longitudinal reticle.
In another embodiment of the device for measuring the normal azimuth of the radar antenna array surface, the transverse reticle is marked with transverse division scales for transverse reading in observation, the longitudinal reticle is marked with longitudinal division scales for longitudinal reading in observation, the screw regulator controls the transverse reticle to move back and forth and outputs rotation angle information, and the center of the eyepiece is provided with an alignment base point for aligning the center of the antenna array surface in measurement of the normal azimuth of the radar antenna array surface.
In another embodiment of the radar antenna array surface normal azimuth angle measuring device of the present invention, the distance from the eyepiece to the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2When the screw adjuster is in the initial position of rotation, the transverse reticle is also in the initial position and has an L1＝L2When the screw regulator rotates for one circle to a rotation end position, the transverse reticle is also positioned at the end position, and L is arranged at the time1＝2L2。
The invention also discloses a radar antenna array surface normal azimuth angle measuring method, which is based on the radar antenna array surface normal azimuth angle measuring device to measure the radar antenna array surface normal azimuth angle and comprises the following steps: marking the measured antenna array surface, marking a central point, a first horizontal point, a second horizontal point, a first vertical point and a second vertical point on the antenna array surface, wherein a horizontal line segment connected by the first horizontal point and the second horizontal point passes through the central point, and a vertical line segment connected by the first vertical point and the second vertical point also passes through the central point; the azimuth measurement is carried out, a horizontal adjustment module of the radar antenna array surface normal azimuth angle measurement device is adjusted to enable the measurement device to be horizontal, a north determination module is used for determining a reference azimuth of the measurement device, the radar antenna array surface normal azimuth angle measurement device is placed in front of the measured antenna array surface, an azimuth adjustment screw and an eyepiece of an observation unit are adjusted to enable the center of the eyepiece to be aligned with a base point marked by the antenna array surface, an azimuth dial module is used for obtaining an included angle omega' between the observation unit and the reference azimuth, namely an observation unit azimuth angle, and at the moment, the measuring and calculating unit outputs the observation unit azimuth angle to a center processing unit in the radar antenna array surface normal azimuth angle measurement device; observing the array surface of the measured antenna, aligning and coinciding an alignment base point at the center of an eyepiece with a central point marked on the antenna array surface, increasing the distance from a transverse reticle to the eyepiece by adjusting a screw adjuster, so that the scale value corresponding to the projection of two points in the horizontal direction of the antenna array surface on the transverse reticle is increased and is equal to the scale value corresponding to the projection of two points in the vertical direction of the antenna array surface on a vertical reticle, and at the moment, outputting the rotation angle of the screw adjuster to a central processing unit in the radar antenna array surface normal azimuth angle measuring device by an observation unit; and calculating a normal azimuth, calculating by the central processing unit according to the rotation angle of the spiral regulator to obtain an azimuth deviation value, and calculating by using the azimuth deviation value and the azimuth of the observation unit to obtain the radar antenna array surface normal azimuth.
In another embodiment of the method for measuring the azimuth angle of the normal line of the radar antenna array surface, in the marking of the measured antenna array surface, a first horizontal point A1Second horizontal point A2First vertical point B1Second vertical point B2All distances to the center point O are equal, i.e. OA1＝OA2＝OB1＝OB2A; when the measured antenna array surface is observed, a horizontal line segment A is observed along the observation direction of the radar antenna array surface normal azimuth angle measuring device1A2Distance d of1Satisfy d1Vertical line segment B was observed as 2acos α1B2Distance d of2Satisfy d2And 2a, alpha is an included angle between the observation direction of an eyepiece of the radar antenna array surface normal azimuth angle measuring device and the antenna array surface normal direction.
In another embodiment of the method for measuring the azimuth angle of the normal of the radar antenna array surface, in the observation of the measured antenna array surface, the distance between the eyepiece and the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2When the screw adjuster is in the initial position of rotation, the transverse reticle is also in the initial position and has an L1＝L2When the screw regulator rotates for one circle to a rotation end position, the transverse reticle is also positioned at the end position, and L is arranged at the time1＝2L2。
In the normal azimuth of the radar antenna array surfaceIn another embodiment of the measuring method, the rotation angle of the screw regulator is represented by f, the unit is a secret bit, and f is more than or equal to 0 and less than or equal to 6000, L1Is in linear relation with f, L is when the screw regulator is at the initial position of rotation1＝L2And f is 0, and L is the end position of rotation when the screw adjuster is at the end position1＝2L2F is 6000, whereby L1The corresponding relation with f is as follows:
Figure GDA0002170253440000041
in another embodiment of the radar antenna array surface normal azimuth angle measuring method, the distance from the eyepiece to the antenna array surface is L, the length of the horizontal line segment is 2x, the length of the vertical line segment is 2y, and the distance d of the horizontal line segment is observed1Satisfy d1Distance d of the vertical line segment was observed as 2acos α2Satisfy d22a, alpha is the observation direction of the eyepiece of the radar antenna array surface normal line azimuth angle measuring device and the antenna array surface normal line direction included angle, namely the azimuth angle deviation value, then there is:
Figure GDA0002170253440000042
further comprising the following steps:
Figure GDA0002170253440000043
the same can also get:
Figure GDA0002170253440000044
the two formulas are compared to obtain:
Figure GDA0002170253440000045
according to
Figure GDA0002170253440000046
Further obtaining:
Figure GDA0002170253440000047
in another embodiment of the method for measuring the normal azimuth angle of the radar antenna array surface, when x is y, the central processing unit calculates that:
Figure GDA0002170253440000051
then there are:
Figure GDA0002170253440000052
the central processing unit calculates the azimuth angle omega of the normal line of the radar antenna array surface as follows:
Figure GDA0002170253440000053
and if omega is less than 0, the value of omega is 2 pi + omega.
The invention has the beneficial effects that: the invention discloses a device and a method for measuring the normal azimuth angle of a radar antenna array surface. The device comprises a measuring and calculating unit, an observing unit, a central processing unit, a display unit, an output interface, a keyboard and a power supply for supplying power to the whole device, wherein the measuring and calculating unit is used for measuring the azimuth of the observing unit of the radar antenna array surface normal azimuth angle measuring device to obtain the azimuth angle of the observing unit, the observing unit is used for aiming and observing the antenna array surface to obtain the observation information of the antenna array surface, and the central processing unit is used for fusing the azimuth angle of the observing unit and the observation information of the antenna array surface to obtain the azimuth angle information of the radar antenna array surface normal. The invention also discloses a method for measuring the normal azimuth angle of the radar antenna array surface. The device and the method provide a convenient and efficient radar antenna array surface normal azimuth angle measurement technical means.
Drawings
FIG. 1 is a flow chart of an embodiment of an apparatus for measuring the azimuth angle of the normal to the front of a radar antenna according to the present invention;
FIG. 2 is a diagram showing the composition of the observation units in an embodiment of the device for measuring the azimuth angle of the normal to the radar antenna array according to the present invention;
FIG. 3 is a schematic view of a transverse reticle in an embodiment of an apparatus for measuring the azimuth angle of the normal to the front of a radar antenna according to the present invention;
FIG. 4 is a schematic view of a longitudinal reticle in an embodiment of an apparatus for measuring the azimuth angle of the normal to the front of a radar antenna according to the present invention;
FIG. 5 is a flow chart of an embodiment of a method for radar antenna wavefront normal azimuth measurement according to the present invention;
FIG. 6 is a schematic diagram of antenna wavefront labeling in another embodiment of a radar antenna wavefront normal azimuth angle measurement method according to the present invention;
FIG. 7 is a schematic diagram of an apparatus for measuring the normal azimuth angle of a radar antenna array plane relative to an observation position of the antenna array plane according to another embodiment of the method for measuring the normal azimuth angle of the radar antenna array plane according to the present invention;
fig. 8 is a schematic view of an eyepiece observation in another embodiment of a radar antenna wavefront normal azimuth angle measurement method according to the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a block diagram showing an embodiment of the radar antenna array normal azimuth measuring apparatus according to the present invention. In fig. 1, the radar antenna array surface normal azimuth angle measuring device includes a measuring unit 1, an observation unit 2, a central processing unit 3, a display unit 4, an output interface 5, a keyboard 6 and a power supply 7, the measuring unit is configured to measure the azimuth of the observation unit to obtain the azimuth of the observation unit, the observation unit is configured to perform sighting observation on the antenna array surface to obtain antenna array surface observation information, the central processing unit performs fusion calculation processing on the azimuth of the observation unit and the antenna array surface observation information to obtain radar antenna array surface normal azimuth angle information, the display unit is configured to display the azimuth of the observation unit, the antenna array surface observation information and the radar antenna array surface normal azimuth angle information, the output interface is configured to interconnect with an external device and output the radar antenna array surface normal azimuth angle information to the external device, the keyboard is used for setting parameters and inputting information to the radar antenna array surface normal azimuth angle measuring device.
Preferably, the measuring and calculating unit comprises a horizontal adjusting module, a north-determining module, an azimuth adjusting screw and an azimuth dial module, wherein the horizontal adjusting module is used for horizontally adjusting the radar antenna array surface normal azimuth measuring device, the north-determining module is used for determining the reference azimuth of the radar antenna array surface normal azimuth measuring device, the azimuth adjusting screw is used for rotating an observation lens cone of the radar antenna array surface normal azimuth measuring device, and the azimuth dial module is used for determining the included angle between the observation lens cone of the radar antenna array surface normal azimuth measuring device and the reference azimuth.
Fig. 2 is a diagram showing an internal configuration of an observation unit in another embodiment of the radar antenna wavefront normal azimuth angle measuring apparatus of the present invention. In the observation unit, including the objective lens 21, the first prism 22, the second prism 23, the horizontal reticle 24, the vertical reticle 25 and the eyepiece 26 arranged in the observation lens cone, and the screw adjuster 27 for adjusting the position of the horizontal reticle 24, the light enters from the objective lens 21, passes through the first prism 22 and the second prism 23 to change the light path, and then passes through the horizontal reticle 24 and the vertical reticle 25 to observe through the eyepiece 26. In use, the objective lens 21 is directed to the antenna array, and the objective lens 21 magnifies the observation image. In addition, the objective lens 21 also has a filtering function, and ensures that the observed image is clear in a dark light or strong light environment. The first prism 22 and the second prism 23 have a function of changing an optical path, and the second prism 23 is also used for inverting the inverted virtual image of the first prism 22 again to observe a positive image in a visual field. As shown in fig. 3, the transverse reticle 24 is marked with transverse dividing scales 241 for observing transverse readings; as shown in fig. 4, the longitudinal reticle 25 is marked with a longitudinal graduation scale 251 for observing longitudinal readings. Preferably, the screw regulator 27 may control the forward and backward movement of the transverse differentiation plate 24 and output rotation angle information of itself. The eyepiece 26 is used for observing by human eyes, and preferably, an alignment base point is arranged at the center of the eyepiece 26 and used for aligning the center of the antenna array surface when the measuring device measures the azimuth angle of the normal of the radar antenna array surface.
Preferably, the distance from the ocular to the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2When the screw adjuster is in the initial position of rotation, the transverse reticle is also in the initial position and has an L1＝L2When the screw regulator rotates for one circle to a rotation end position, the transverse reticle is also positioned at the end position, and L is arranged at the time1＝2L2。
Based on the same conception, the invention also provides a measuring method embodiment utilizing the radar antenna array surface normal azimuth angle measuring device. As shown in fig. 5, the method for measuring the azimuth angle of the normal of the radar antenna array surface comprises the following steps:
step S101, marking the measured antenna array surface, as shown in fig. 6, marking the central point O and the first horizontal point a on the antenna array surface1And a second horizontal point A2First vertical point B1And a firstTwo vertical points B2And said first horizontal point A1And a second horizontal point A2The first horizontal point A is horizontally symmetrical and equidistantly arranged relative to the central point O1And a second horizontal point A2Connected horizontal line segment A1A2Passing through the center point O, the first vertical point B1And a second vertical point B2Is vertically symmetrically arranged at equal distance relative to the central point O and is formed by the first vertical point B1And a second vertical point B2Connected vertical line sections B1B2And passing through the center point O, namely the horizontal line segment and the vertical line segment are mutually vertical, and the intersection point is the center point O.
Here, OA is apparently present1＝OA2And OB1＝OB2But OA1With OB1And not necessarily equal. Preferably, the distances from each point to the center point O are all equal, i.e. OA1＝OA2＝OB1＝OB2A is a distance value.
The distance value a is flexible, no matter how large the value of a is, the final measurement result of the azimuth angle of the normal line of the radar antenna array surface is irrelevant to the specific value of a, and only the OA is ensured1＝OA2＝OB1＝OB2And (4) finishing. Therefore, the technical means has wide application range.
Step S102, azimuth measurement is carried out, a horizontal adjusting module of the radar antenna array surface normal azimuth measuring device is adjusted to enable the measuring device to be horizontal, a north determining module is used for determining a reference azimuth of the measuring device, the radar antenna array surface normal azimuth measuring device is placed in front of the measured antenna array surface, an azimuth adjusting screw and an eyepiece of an observation unit are adjusted to enable the center of the eyepiece to be aligned with a base point and the standard center point of the antenna array surface, an included angle between the observation unit and the reference azimuth is obtained through an azimuth dial module, and at the moment, the measuring unit outputs the included angle between the observation unit and the reference azimuth to a center processing unit in the radar antenna array surface normal azimuth measuring device. Here, an angle between the observation unit and the reference azimuth is denoted by ω', which is an observation unit azimuth angle.
And S103, observing the array surface of the antenna to be measured, aligning and coinciding the alignment base point of the center of the eyepiece with the center point marked on the antenna array surface, adjusting the spiral adjuster, and increasing the distance between the transverse reticle and the eyepiece to ensure that the scale value corresponding to the projection of two points in the horizontal direction of the antenna array surface on the transverse reticle is increased and is equal to the scale value corresponding to the projection of two points in the vertical direction of the antenna array surface on the vertical reticle, wherein at the moment, the observation unit outputs the rotation angle of the spiral adjuster to a central processing unit in the radar antenna array surface normal azimuth angle measuring device.
Preferably, the antenna wavefront observation information includes a rotation angle f of the helical adjuster.
And step S104, resolving a normal azimuth, calculating by the central processing unit according to the rotation angle f of the spiral regulator to obtain an azimuth deviation value alpha, and calculating by using the azimuth deviation value alpha and an observation unit azimuth omega' of the radar antenna array surface normal azimuth measuring device to obtain the radar antenna array surface normal azimuth omega.
In step S103, the distance from the eyepiece to the antenna array surface is L, and the distance from the eyepiece to the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2. Preferably, rotation of the screw adjuster controls the back and forth movement of the cross-reticle, and when the screw adjuster is in the initial position, the cross-reticle is also in the initial position, where L is1＝L2When the screw regulator rotates for a circle, the screw regulator is in the end position and the transverse reticle is also in the end position, at this time L1＝2L2。
Preferably, the rotation angle of the screw regulator is represented by f, and the unit is a density, and f is more than or equal to 0 and less than or equal to 6000. Here, L1Is linear with f, when f is 0, L1＝L2(ii) a When f is 6000, L1＝2L2From this L1The corresponding relation to f is
Figure GDA0002170253440000091
Furthermore, when the measured antenna array surface is observed, the radar antenna array surface normal azimuth angle measuring device does not need to operate on the opposite side of the antenna array surface, and only needs to be in the range of 120 degrees in front of the antenna array surface, and at the moment, the included angle between the observation direction of an eyepiece of the radar antenna array surface normal azimuth angle measuring device and the antenna array surface normal direction is represented as alpha, namely the azimuth deviation value alpha. Furthermore, because the center of the antenna array surface is not always equal to the azimuth angle measuring device of the normal line of the radar antenna array surface, a certain elevation angle (or depression angle) exists, and the A observed by the visual field of the eyepiece is caused1A2Not necessarily horizontal, but in the measurement we only use A1A2Projection in the horizontal direction and therefore has no effect.
As shown in FIG. 7, it is schematically shown that the observation unit LB1 is at an angle α to the normal of the antenna's wavefront, where the central vertical line and two vertical points B on the antenna's wavefront are observed1B2Are coincident. Fig. 8 shows a schematic view of the effect observed in the eyepiece still further.
Further, OA is defined1The length in the horizontal direction is x and corresponds to a horizontal line segment A1A2Has a length of 2x, or a horizontal line segment A1A2Has a half length of x; OB1The length in the vertical direction is y and corresponds to a vertical line segment B1B2Has a length of 2y, or a vertical line section B1B2Has a half length of y.
If OA is present1＝OA2＝OB1＝OB2A, when observing, looking along the observation direction of the radar antenna array surface normal azimuth angle measuring device, observing a horizontal line A1A2Distance d of1Satisfy d12acos α; observe the vertical line B1B2Distance d of2Satisfy d2＝2a。
In step S104, according to the principle of similar triangle, there are:
Figure GDA0002170253440000101
further comprising the following steps:
Figure GDA0002170253440000102
namely:
Figure GDA0002170253440000103
the same can also get:
Figure GDA0002170253440000104
the two formulas are compared to obtain:
Figure GDA0002170253440000105
according to
Figure GDA0002170253440000111
Can further obtain:
Figure GDA0002170253440000112
the rotation angle f of the screw adjuster is preferably used as output information of the observation unit.
Preferably, in step S103, in the process of aligning and coinciding the alignment base point at the center of the eyepiece with the central point O marked on the antenna array surface, the screw adjuster is adjusted to increase the distance L from the lateral reticle to the eyepiece1So that d1If the scale value x corresponding to the lateral reticle is increased and x is equal to y, the central processing unit obtains the rotation angle information f of the screw adjuster at this time, and then in step S104, it is calculated that:
Figure GDA0002170253440000113
then there are:
Figure GDA0002170253440000114
preferably, in step S104, the central processing unit calculates and outputs a radar antenna wavefront normal azimuth angle ω, where the radar antenna wavefront normal azimuth angle ω is:
Figure GDA0002170253440000115
and if omega is less than 0, the value of omega is 2 pi + omega.
Therefore, the invention discloses a radar antenna array surface normal azimuth angle measuring device. The device comprises a measuring and calculating unit, an observation unit, a central processing unit, a display unit, an output interface, a keyboard and a power supply for supplying power to the whole device, wherein the measuring and calculating unit is used for measuring the azimuth angle of the observation unit to obtain the azimuth angle of the observation unit, the observation unit is used for aiming and observing the antenna array surface to obtain the observation information of the antenna array surface, and the central processing unit is used for fusing the azimuth angle of the observation unit and the observation information of the antenna array surface to obtain the normal azimuth angle information of the radar antenna array surface. The invention also discloses a method for measuring the normal azimuth angle of the radar antenna array surface. The device and the method provide a technical means for measuring the azimuth angle of the normal of the radar antenna array surface.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. A radar antenna array surface normal azimuth angle measuring device is characterized by comprising a measuring unit, an observation unit, a central processing unit, a display unit, an output interface, a keyboard and a power supply for supplying power to the whole device, wherein the measuring unit is used for measuring the azimuth of the observation unit to obtain the azimuth of the observation unit, the observation unit is used for aiming and observing the antenna array surface to obtain antenna array surface observation information, the central processing unit is used for performing fusion calculation processing on the azimuth of the observation unit and the antenna array surface observation information to obtain radar antenna array surface normal azimuth angle information, the display unit is used for displaying the azimuth of the observation unit, the antenna array surface observation information and the radar antenna array surface normal azimuth angle information, the output interface is used for being interconnected with external equipment, outputting the azimuth angle information of the normal of the radar antenna array surface to external equipment, wherein the keyboard is used for carrying out parameter setting and information input on the radar antenna array surface normal azimuth angle measuring device;
the measuring and calculating unit comprises a horizontal adjusting module, a north positioning module, an azimuth adjusting screw and an azimuth dial module, wherein the horizontal adjusting module is used for horizontally adjusting the radar antenna array surface normal azimuth measuring device, the north positioning module is used for determining the reference azimuth of the radar antenna array surface normal azimuth measuring device, the azimuth adjusting screw is used for rotating an observation lens cone of the radar antenna array surface normal azimuth measuring device, and the azimuth dial module is used for determining the included angle between the observation lens cone of the radar antenna array surface normal azimuth measuring device and the reference azimuth;
the observation unit comprises an objective lens, a first prism, a second prism, a transverse reticle, a longitudinal reticle and an ocular lens which are arranged in an observation lens cone, and a spiral regulator for regulating the position of the transverse reticle;
the distance from the ocular to the antenna array surface is L, and the distance from the ocular to the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2The rotation of the screw regulator controls the back and forth movement of the transverse reticle,when the screw adjuster is in a rotational initial position, the transverse reticle is also in an initial position and has an L1＝L2When the screw regulator rotates for one circle to a rotation end position, the transverse reticle is also positioned at the end position, and L is arranged at the time1＝2L2(ii) a The rotation angle of the screw regulator is represented by f, the unit is a density, and f is more than or equal to 0 and less than or equal to 6000; l is1Is linear with f, L is when the screw adjuster is at the initial position1＝L2F is 0; l when the screw adjuster is at a rotation end position1＝2L2F is 6000, whereby L1The corresponding relation to f is
Figure FDA0002844142540000021
2. The radar antenna array plane normal azimuth angle measuring device according to claim 1, wherein the transverse reticle is marked with transverse division scales for transverse reading during observation, the longitudinal reticle is marked with longitudinal division scales for longitudinal reading during observation, the screw adjuster controls the transverse reticle to move back and forth and outputs rotation angle information, and the eyepiece is provided with an alignment base point at the center for aligning the center of the antenna array plane during radar antenna array plane normal azimuth angle measurement.
3. A method for measuring the normal azimuth angle of a radar antenna array surface, which is characterized in that the method for measuring the normal azimuth angle of the radar antenna array surface based on the radar antenna array surface normal azimuth angle measuring device of claim 2 comprises the following steps:
marking the measured antenna array surface, marking a central point, a first horizontal point, a second horizontal point, a first vertical point and a second vertical point on the antenna array surface, wherein a horizontal line segment connected by the first horizontal point and the second horizontal point passes through the central point, and a vertical line segment connected by the first vertical point and the second vertical point also passes through the central point;
the azimuth measurement is carried out, a horizontal adjustment module of the radar antenna array surface normal azimuth angle measurement device is adjusted to enable the measurement device to be horizontal, a north determination module is used for determining a reference azimuth of the measurement device, the radar antenna array surface normal azimuth angle measurement device is placed in front of the measured antenna array surface, an azimuth adjustment screw and an eyepiece of an observation unit are adjusted to enable the center of the eyepiece to be aligned with a base point marked by the antenna array surface, an azimuth dial module is used for obtaining an included angle omega' between the observation unit and the reference azimuth, namely an observation unit azimuth angle, and at the moment, the measuring and calculating unit outputs the observation unit azimuth angle to a center processing unit in the radar antenna array surface normal azimuth angle measurement device;
observing the array surface of the measured antenna, aligning and coinciding an alignment base point at the center of an eyepiece with a central point marked on the antenna array surface, increasing the distance from a transverse reticle to the eyepiece by adjusting a screw adjuster, so that the scale value corresponding to the projection of two points in the horizontal direction of the antenna array surface on the transverse reticle is increased and is equal to the scale value corresponding to the projection of two points in the vertical direction of the antenna array surface on a vertical reticle, and at the moment, outputting the rotation angle of the screw adjuster to a central processing unit in the radar antenna array surface normal azimuth angle measuring device by an observation unit;
calculating a normal azimuth, calculating by the central processing unit according to the rotation angle of the spiral regulator to obtain an azimuth deviation value, and calculating by using the azimuth deviation value and the azimuth of the observation unit to obtain a radar antenna array surface normal azimuth;
in the observation of the array surface of the antenna to be measured, the distance from an ocular to the array surface of the antenna is L, and the distance from the ocular to the transverse reticle is L1The distance from the ocular to the longitudinal reticle is L2When the screw adjuster is in the initial position of rotation, the transverse reticle is also in the initial position and has an L1＝L2When the screw regulator rotates for one circle to a rotation end position, the transverse reticle is also positioned at the end position, and L is arranged at the time1＝2L2；
Of said screw adjusterThe rotation angle is expressed by f, the unit is a secret bit, and f is more than or equal to 0 and less than or equal to 6000, L1Is in linear relation with f, L is when the screw regulator is at the initial position of rotation1＝L2And f is 0, and L is the end position of rotation when the screw adjuster is at the end position1＝2L2F is 6000, whereby L1The corresponding relation with f is as follows:
Figure FDA0002844142540000031
4. the method of claim 3, wherein the first horizontal point A is in the measured antenna array surface label1Second horizontal point A2First vertical point B1Second vertical point B2All distances to the center point O are equal, i.e. OA1＝OA2＝OB1＝OB2＝a；
When the measured antenna array surface is observed, a horizontal line segment A is observed along the observation direction of the radar antenna array surface normal azimuth angle measuring device1A2Distance d of1Satisfy d1Vertical line segment B was observed as 2acos α1B2Distance d of2Satisfy d2And 2a, alpha is an included angle between the observation direction of an eyepiece of the radar antenna array surface normal azimuth angle measuring device and the antenna array surface normal direction.
5. The method for measuring the azimuth angle of the normal to the array surface of the radar antenna according to claim 4, wherein the distance from an eyepiece to the array surface of the antenna is L, the length of a horizontal line segment is 2x, the length of a vertical line segment is 2y, and the distance d of the horizontal line segment is observed1Satisfy d1Distance d of the vertical line segment was observed as 2acos α2Satisfy d22a, alpha is the observation direction of the eyepiece of the radar antenna array surface normal line azimuth angle measuring device and the antenna array surface normal line direction included angle, namely the azimuth angle deviation value, then there is:
Figure FDA0002844142540000041
further comprising the following steps:
Figure FDA0002844142540000042
the same can also get:
Figure FDA0002844142540000043
the two formulas are compared to obtain:
Figure FDA0002844142540000044
according to
Figure FDA0002844142540000045
Further obtaining:
Figure FDA0002844142540000046
6. the radar antenna wavefront normal azimuth angle measurement method according to claim 5, wherein when x ═ y, the central processing unit calculates to obtain:
Figure FDA0002844142540000047
then there are:
Figure FDA0002844142540000048
the central processing unit calculates the azimuth angle omega of the normal line of the radar antenna array surface as follows:
Figure FDA0002844142540000051
and if omega is less than 0, the value of omega is 2 pi + omega.
CN201910587666.4A 2019-07-02 2019-07-02 Radar antenna array surface normal azimuth angle measuring device and method Active CN110361706B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910587666.4A CN110361706B (en) 2019-07-02 2019-07-02 Radar antenna array surface normal azimuth angle measuring device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910587666.4A CN110361706B (en) 2019-07-02 2019-07-02 Radar antenna array surface normal azimuth angle measuring device and method

Publications (2)

Publication Number Publication Date
CN110361706A CN110361706A (en) 2019-10-22
CN110361706B true CN110361706B (en) 2021-03-12

Family

ID=68217732

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910587666.4A Active CN110361706B (en) 2019-07-02 2019-07-02 Radar antenna array surface normal azimuth angle measuring device and method

Country Status (1)

Country Link
CN (1) CN110361706B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220952B (en) * 2020-03-16 2021-09-17 中国人民解放军63926部队 Phased array radar area type high-precision adjusting method under large-load working condition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108037501A (en) * 2018-01-30 2018-05-15 长沙深之瞳信息科技有限公司 It is a kind of to obtain area outlook radar system and method for the target pitch to angle
CN109100733A (en) * 2018-07-05 2018-12-28 南京先进激光技术研究院 Laser radar apparatus error detecting facility, method and device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101071064A (en) * 2007-06-07 2007-11-14 施修来 Ground tilt instrument for measuring micro target using microscope
CN101691998B (en) * 2009-10-16 2011-05-18 中国科学院上海光学精密机械研究所 Two-dimensional laser autocollimator
FR2956222B1 (en) * 2010-02-09 2012-07-27 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS
CN102519460B (en) * 2011-12-09 2014-11-05 东南大学 Non-linear alignment method of strapdown inertial navigation system
CN103630090B (en) * 2012-08-28 2016-10-05 北京航天计量测试技术研究所 High resolution double shaft autocollimator system
CN103576702B (en) * 2013-11-22 2016-02-24 北京无线电测量研究所 A kind of MMW Weather Radar aerial angle Calibration Method
CN106482743B (en) * 2015-09-02 2019-05-21 中国航空工业第六一八研究所 A kind of rapid detection method of relative position measurement equipment
CN105548976A (en) * 2015-12-14 2016-05-04 中国科学院长春光学精密机械与物理研究所 Shipborne radar offshore precision identification method
CN205376768U (en) * 2016-01-08 2016-07-06 张鹿平 Insect detection radar antenna feeding system with synthesize and survey performance
CN105891821B (en) * 2016-05-24 2018-04-17 北京环境特性研究所 A kind of airborne lower automatic tracking method for regarding measurement target
CN106289205B (en) * 2016-08-05 2019-03-15 四川汉星航通科技有限公司 A kind of rhumb self-operated measuring unit
CN106705966A (en) * 2016-09-18 2017-05-24 北京星网卫通科技开发有限公司 Stable platform system capable of realizing high-precision absolute position and posture measurement
US10809355B2 (en) * 2017-07-18 2020-10-20 Veoneer Us, Inc. Apparatus and method for detecting alignment of sensor and calibrating antenna pattern response in an automotive detection system
CN107991684B (en) * 2017-11-28 2021-08-10 长春理工大学 GNC subsystem equipment attitude measurement system in large aircraft
CN109839632A (en) * 2017-11-29 2019-06-04 中国气象局气象探测中心 A kind of localization method and device of radar antenna feed
CN108181618B (en) * 2018-03-01 2019-12-20 中国人民解放军陆军炮兵防空兵学院郑州校区 Radar calibration method
CN109188441B (en) * 2018-09-05 2021-02-26 中国船舶重工集团公司第七一九研究所 Four-dimensional continuous wave ultrasonic radar and four-dimensional information measuring method
CN109633575B (en) * 2018-10-26 2020-07-31 上海无线电设备研究所 Three-axis calibration system and method for satellite-borne microwave optical composite radar

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108037501A (en) * 2018-01-30 2018-05-15 长沙深之瞳信息科技有限公司 It is a kind of to obtain area outlook radar system and method for the target pitch to angle
CN109100733A (en) * 2018-07-05 2018-12-28 南京先进激光技术研究院 Laser radar apparatus error detecting facility, method and device

Also Published As

Publication number Publication date
CN110361706A (en) 2019-10-22

Similar Documents

Publication Publication Date Title
CN204007645U (en) A kind of caliberating device of star sensor benchmark prism square alignment error
CN105318891A (en) Star sensor reference cube-prism installation error calibration apparatus
CN111656260B (en) Structured light projection for mirrored surfaces
CN106768882B (en) A kind of optical system distortion measurement method based on Shack-Hartmann wavefront sensor
CN104075881A (en) Parallel error measuring method suitable for multiband common-path telescope
US2179850A (en) Optical system for measuring changes in magnification
CN104575210A (en) Spectrometer based on CCD imaging and adjusting method thereof
CN100526832C (en) Off-axis reflection optical lens focus detection method
CN108168468A (en) The Focusable photoelectric auto-collimator and method of sight of laser sight are set in a kind of
WO1991012491A2 (en) Electro optical apparatus
CN110361706B (en) Radar antenna array surface normal azimuth angle measuring device and method
CN102243373A (en) Optical system of remote lens-type detector with super-large exit pupil diameter
CN206019603U (en) A kind of novel photoelectric school axle instrument
CN108168462B (en) A kind of method and system for the measurement of scope of freedom shape sub-aperture stitching
CN103439086B (en) A kind of method of non-contact detection curved surface prism and device
CN202939894U (en) Digitization high-precision spectrometer horizontal adjustment apparatus
CN102261905B (en) Method for adjusting center and focal plane of CCD (charge-coupled device) based on optical telescope imaging system
CN107677456B (en) A kind of telescope optic axis Detection of Stability method
CN203811354U (en) Device for measuring vertex power of lens
CN108917652A (en) A kind of pose optimization method of structure light detection off-axis aspheric surface
CN103512731A (en) Method for measuring back vertex power of lens
CN103063227A (en) Pointing device assisting in light path butt joint of theodolite and target and light path butt joint method
RU98597U1 (en) STAND FOR ADJUSTING THE OPTICAL-MECHANICAL INSTRUMENT
CN108844920B (en) V prism refractive index group test method based on reticle angle scribing line grading
CN103512730A (en) Device for measuring back vertex power of lens

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant