CN210572721U - Radar test darkroom - Google Patents
Radar test darkroom Download PDFInfo
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- CN210572721U CN210572721U CN201920835355.0U CN201920835355U CN210572721U CN 210572721 U CN210572721 U CN 210572721U CN 201920835355 U CN201920835355 U CN 201920835355U CN 210572721 U CN210572721 U CN 210572721U
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Abstract
The utility model relates to a radar test technical field discloses a radar test darkroom. The radar testing darkroom comprises a first darkroom, a second darkroom and a third darkroom, wherein the first darkroom comprises a first wall body and a second wall body, a first through hole is formed in the first wall body, a second through hole is formed in the second wall body, and a radar is arranged in the first darkroom; the second darkroom is arranged on one side, back to the radar, of the first wall body, and an angular reflector is arranged in the second darkroom; the third darkroom is arranged on one side, back to the radar, of the second wall body, a horn antenna is arranged in the third darkroom, and the transmitting path of the radar and the corner reflector is perpendicular to the transmitting path of the radar and the horn antenna. The utility model has the advantages that because the corner reflector is vertical to the horn antenna, mutual interference can not be generated, and the accuracy of radar test is improved; the first through hole and the second through hole limit radar wave beams in a required range, so that wave absorbing structures do not need to be arranged on the top surfaces and the bottom surfaces of the second darkroom and the third darkroom, and the construction cost is reduced.
Description
Technical Field
The utility model relates to a radar test technical field especially relates to a radar test darkroom.
Background
The millimeter wave is electromagnetic wave with the wavelength of 1-10mm, has the characteristics of short wavelength and wide frequency band, is easy to realize narrow wave beams, has high resolution and is not easy to be interfered. The millimeter wave radar is a high-precision sensor for measuring the relative distance, the current speed and the direction of a measured object, and mainly comprises a receiving and transmitting antenna, a radio frequency front end, a modulation signal, a signal processing module and the like. With the development and progress of radar technology, millimeter wave radar sensors are beginning to be applied to a plurality of fields such as automotive electronics, unmanned aerial vehicles, intelligent transportation and the like.
When the millimeter wave radar is used for distance simulation test, a longer test distance is needed to obtain a more accurate simulation distance. The existing testing darkroom for millimeter wave radar distance simulation is mostly of a rectangular or square structure, and because the testing required distance is longer, when the existing rectangular or square darkroom is adopted, the structural area of the darkroom is larger, the using amount of wave-absorbing materials is larger, and the construction cost of the darkroom is higher; meanwhile, the horn antenna and the target simulation corner reflector are in the same direction, and mutual interference can be caused.
SUMMERY OF THE UTILITY MODEL
Based on above problem, the utility model aims to provide a radar test darkroom reduces darkroom construction cost, avoids horn antenna and corner reflector mutual interference.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a radar testing darkroom, comprising:
the first darkroom comprises a first wall body and a second wall body, a first through hole is formed in the first wall body, a second through hole is formed in the second wall body, and the radar is arranged in the first darkroom;
the second darkroom is arranged on one side, facing away from the radar, of the first wall body, and an angular reflector is arranged in the second darkroom;
the third darkroom is arranged on one side, back to the radar, of the second wall body, a horn antenna is arranged in the third darkroom, and the emission path of the radar and the corner reflector is perpendicular to the emission path of the radar and the horn antenna.
As the utility model discloses a radar test darkroom's preferred scheme, the cross section of first darkroom is the octagon.
As the utility model discloses a radar test darkroom's preferred scheme, be provided with the baffle in the second darkroom, be provided with the third through-hole on the baffle.
As the utility model discloses a radar test darkroom's preferred scheme, the third through-hole with the height of first through-hole equals.
As the utility model discloses a radar test darkroom's preferred scheme, corner reflector set up in the baffle dorsad one side of radar.
As the utility model discloses a preferred scheme of radar test darkroom, except first wall body the second wall body and with the second wall body is just outside the right third wall body, all be provided with absorbing structure on all the other wall bodies in the first darkroom.
As the utility model discloses a radar test darkroom's preferred scheme, the wave-absorbing structure is for inhaling the ripples wedge.
As the utility model discloses a preferred scheme of radar test darkroom, except the top surface and the bottom surface of second darkroom, all the other walls of second darkroom all set up wave-absorbing structure.
As the utility model discloses a preferred scheme of radar test darkroom, except the top surface and the bottom surface of third darkroom, all the other walls of third darkroom all set up wave-absorbing structure.
As the utility model discloses a radar test darkroom's preferred scheme, the cross section of second darkroom is the rectangle.
The utility model has the advantages that:
the utility model provides a radar test darkroom sets up the radar in first darkroom, through set up first wall body and second wall body in first darkroom, and set up the second darkroom in one side that first wall body dorsad radar, set up the corner reflector in the second darkroom, set up the third darkroom in one side that the second wall body dorsad radar, set up horn antenna in the third darkroom, because the transmission path of radar and corner reflector is perpendicular to the transmission path of radar and horn antenna, the position of corner reflector and horn antenna is perpendicular, can not produce mutual interference, the accuracy of radar test has been improved; the first through hole is formed in the first wall, when the radar diagonal reflector of the first darkroom transmits radar beams, the radar beams enter the second darkroom through the first through hole, and the radar beams are limited within a required range by the first through hole, so that wave absorbing structures do not need to be arranged on the top surface and the bottom surface of the second darkroom, and the construction cost is reduced; the second through hole is formed in the second wall body, when the radar of the first darkroom transmits radar beams to the horn antenna, the radar beams enter the third darkroom through the second through hole, and the radar beams are limited in a required range by the second through hole, so that wave absorbing structures do not need to be arranged on the top surface and the bottom surface of the third darkroom, and the construction cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radar testing darkroom provided in an embodiment of the present invention;
fig. 2 is a schematic working diagram of a radar testing darkroom according to an embodiment of the present invention.
In the figure:
1-a first darkroom; 2-a second darkroom; 3-a third darkroom; 4-wave absorbing structure; 5-corner reflector;
11-a first wall; 12-a second wall; 13-a third wall;
21-a separator;
100-radar.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a radar testing darkroom, which is particularly suitable for distance simulation testing of millimeter-wave radar and comprises a first darkroom 1, a second darkroom 2 and a third darkroom 3 as shown in figure 1. The first darkroom 1, the second darkroom 2 and the third darkroom 3 are used for isolating the interference of external signals to the radar 100 test.
Specifically, the first darkroom 1 includes a first wall 11 and a second wall 12, the first wall 11 is provided with a first through hole (not shown), the second wall 12 is provided with a second through hole (not shown), and the radar 100 is disposed in the first darkroom 1. Optionally, the first wall 11 and the second wall 12 are vertically disposed, so that the radar 100 directly faces the first through hole on the first wall 11 and the second through hole on the second wall 12 to emit radar signals. The radar 100 mainly includes a transceiver antenna, a radio frequency front end, a modulation signal and signal processing module, and the like, and detects a target distance, an orientation, and a relative speed by performing a related process on a received signal and a transmitted signal. The first through hole and the second through hole limit the radar wave beam within a required range respectively, and influence on a test result caused by too much radar wave beam scattering is avoided. In order to reduce the construction cost of the first dark room 1, in this embodiment, optionally, the cross section of the first dark room 1 is octagonal, and compared with the rectangular dark room, the wall area of the dark room with the octagonal cross section is smaller, and correspondingly, the total amount of the wave-absorbing structures 4 required to be laid on the wall surface is reduced, thereby effectively reducing the construction cost of the first dark room 1. In other embodiments, the cross section of the first dark room 1 may also be a polygon such as a hexagon, a dodecagon, etc., and the specific setting needs to be determined according to the rounding requirement of the size of the wave-absorbing structure 4.
In order to further reduce the construction cost of the first darkroom 1, optionally, wave-absorbing structures 4 are arranged on the rest walls in the first darkroom 1 except the first wall 11, the second wall 12 and the third wall 13 opposite to the second wall 12, and the wave-absorbing structures 4 do not need to be laid on the first wall 11, the second wall 12 and the third wall 13 because only a few radar beams are reflected to the first wall 11, the second wall 12 and the third wall 13 in the test process. Optionally, the absorbing structure 4 is a wave absorbing wedge. The wave-absorbing wedge mainly comprises a polyurethane foam type, a non-woven fabric flame-retardant type, a silicate plate metal film assembly type and the like, and can absorb or greatly weaken the electromagnetic wave energy projected to the surface of the wedge, so that the interference of the electromagnetic wave is reduced.
The second darkroom 2 is arranged on the side of the first wall 11 opposite to the radar 100, and the corner reflector 5 is arranged in the second darkroom 2. It should be noted that the corner reflector 5 is used as a simulation target for testing the radar 100, and the corner reflector 5 is also called a radar reflector, and is a radar wave reflector with different specifications made of metal plates according to different applications. When the radar electromagnetic wave scans the corner reflector 5, the electromagnetic wave is refracted and amplified at the metal corner, a strong echo signal is generated, and a strong echo target appears on the screen of the radar 100.
In this embodiment, the second darkroom 2 has a conventional rectangular structure, which facilitates the test simulation of the radar 100 at a longer distance, and optionally, the cross section of the second darkroom 2 is rectangular. In order to avoid the radar beam from spreading too much during propagation, a partition plate 21 is optionally provided in the second dark room 2, and a third through hole is provided in the partition plate 21, through which the radar beam is limited to a desired range to irradiate the corner reflector 5 more intensively. To further prevent the radar beam from spreading too much, optionally, the third through hole is at the same height as the first through hole, and the radar beam sequentially passes through the first through hole and the third through hole to irradiate the corner reflector 5. It should be noted that the heights of the corner reflector 5 and the first through hole and the third through hole are the same, so that the corner reflector 5 can reflect radar signals sufficiently, and the accuracy of radar test is improved. To facilitate test simulation of the radar 100 at greater distances, a corner reflector 5 is optionally provided on the side of the partition 21 facing away from the radar 100. In order to reduce the construction cost of the second darkroom 2, optionally, except for the top surface and the bottom surface of the second darkroom 2, the other wall surfaces of the second darkroom 2 are provided with wave-absorbing structures 4, because the first wall body 11 is provided with the first through hole, when the radar 100 of the first darkroom 1 transmits a radar beam to the corner reflector 5, the radar beam enters the second darkroom 2 through the first through hole, and the radar beam is limited in a required range by the first through hole, so that the top surface and the bottom surface of the second darkroom 2 do not need to be provided with the wave-absorbing structures 4, and the construction cost is reduced.
The third darkroom 3 is disposed on a side of the second wall 12 facing away from the radar 100, a horn antenna (not shown) is disposed in the third darkroom 3, a transmission path between the radar 100 and the corner reflector 5 is perpendicular to a transmission path between the radar 100 and the horn antenna, and the horn antenna is configured to receive a signal of the radar 100 and measure power and frequency of the radar 100. Because the corner reflector 5 is vertical to the horn antenna, mutual interference cannot be generated, and the accuracy of the radar 100 test is improved. In order to reduce the construction cost of the third darkroom 3, optionally, except for the top surface and the bottom surface of the third darkroom 3, the other wall surfaces of the third darkroom 3 are provided with the wave-absorbing structures 4, and since the second through hole is formed in the second wall 12, when the radar 100 of the first darkroom 1 transmits a radar beam to the horn antenna, the radar beam enters the third darkroom 3 through the second through hole, and the radar beam is limited within a required range by the second through hole, so that the top surface and the bottom surface of the third darkroom 3 are not required to be provided with the wave-absorbing structures 4, and the construction cost is reduced. It should be noted that, the sizes of the first through hole and the third through hole are determined according to the sizes and positions of the first wall, the partition 21, the corner reflector 5 and the second darkroom in practical application, which is the prior art and will not be described herein again, and the size of the second through hole is set in the same manner.
When the radar testing darkroom provided by the embodiment is used for testing a simulation target, as shown in fig. 2, the method mainly comprises the following steps: firstly, the radar 100 emits a radar beam by aiming at a first through hole on the first wall 11; secondly, the radar wave speed irradiates on the corner reflector 5 (simulation target) through a third through hole on the partition plate 21; then, the radar wave velocity is reflected back to be received by the radar 100; finally, the detection of the distance, the direction and the relative speed of the corner reflector 5 is realized through the relevant processing of the received signal and the transmitted signal.
The radar testing darkroom provided by the embodiment mainly comprises the following steps when testing the frequency and the power of the radar 100: firstly, the radar 100 emits a radar beam aiming at the second through hole on the second wall 12; secondly, the radar beam is absorbed by the horn antenna and the frequency and power of the radar 100 are measured.
In the radar testing darkroom provided by the embodiment, the radar 100 is arranged in the first darkroom 1, the first wall 11 and the second wall 12 are arranged in the first darkroom 1, the second darkroom 2 is arranged on the side, opposite to the radar 100, of the first wall 11, the corner reflector 5 is arranged in the second darkroom 2, the third darkroom 3 is arranged on the side, opposite to the radar 100, of the second wall 12, and the horn antenna is arranged in the third darkroom 3, so that the transmitting paths of the radar 100 and the corner reflector 5 are perpendicular to the transmitting paths of the radar 100 and the horn antenna, the directions of the corner reflector 5 and the horn antenna are perpendicular, mutual interference cannot be generated, and the testing accuracy of the radar 100 is improved; because the first through hole is formed in the first wall body 11, when the radar 100 of the first darkroom 1 emits radar beams to the corner reflector 5, the radar beams enter the second darkroom 2 through the first through hole, and the radar beams are limited within a required range by the first through hole, so that the wave absorbing structures 4 are not required to be arranged on the top surface and the bottom surface of the second darkroom 2, and the construction cost is reduced; because the second through hole is formed in the second wall 12, when the radar 100 of the first darkroom 1 transmits radar beams to the horn antenna, the radar beams enter the third darkroom 3 through the second through hole, and the radar beams are limited in a required range by the second through hole, so that the wave absorbing structures 4 do not need to be arranged on the top surface and the bottom surface of the third darkroom 3, and the construction cost is reduced.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A radar testing darkroom, comprising:
the first darkroom (1) comprises a first wall body (11) and a second wall body (12), a first through hole is formed in the first wall body (11), a second through hole is formed in the second wall body (12), and the radar (100) is arranged in the first darkroom (1);
the second darkroom (2) is arranged on one side, back to the radar (100), of the first wall body (11) and communicated with the first darkroom (1) through the first through hole, and an angular reflector (5) is arranged in the second darkroom (2);
the third darkroom (3) is arranged on one side, back to the radar (100), of the second wall body (12) and communicated with the first darkroom (1) through the second through hole, a horn antenna is arranged in the third darkroom (3), and the emission path of the radar (100) and the corner reflector (5) is perpendicular to the emission path of the radar (100) and the horn antenna.
2. Radar testing camera according to claim 1, characterised in that the cross section of the first camera (1) is octagonal.
3. The radar testing camera according to claim 1, characterized in that a partition (21) is arranged in the second camera (2), and a third through hole is arranged on the partition (21).
4. The radar testing camera of claim 3, wherein the third through hole is equal in height to the first through hole.
5. The radar testing darkroom of claim 3, wherein the corner reflector (5) is arranged on a side of the partition (21) facing away from the radar (100).
6. The radar testing darkroom of claim 1, wherein wave absorbing structures (4) are arranged on the rest walls in the first darkroom (1) except the first wall (11), the second wall (12) and a third wall (13) opposite to the second wall (12).
7. Dark radar testing chamber according to claim 6, characterized in that the absorbing structure (4) is a wave absorbing wedge.
8. Radar testing camera according to claim 6, characterized in that the wave absorbing structure (4) is arranged on the remaining wall surfaces of the second camera (2) except the top and bottom surfaces of the second camera (2).
9. Radar testing camera according to claim 6, characterized in that the wave-absorbing structures (4) are arranged on the remaining wall surfaces of the third camera (3) except the top and bottom surfaces of the third camera (3).
10. The radar testing camera according to any one of claims 1 to 9, characterized in that the cross section of the second camera (2) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835355.0U CN210572721U (en) | 2019-06-04 | 2019-06-04 | Radar test darkroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835355.0U CN210572721U (en) | 2019-06-04 | 2019-06-04 | Radar test darkroom |
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| Publication Number | Publication Date |
|---|---|
| CN210572721U true CN210572721U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920835355.0U Active CN210572721U (en) | 2019-06-04 | 2019-06-04 | Radar test darkroom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095763A (en) * | 2019-06-04 | 2019-08-06 | 北京道锐达科技有限公司 | A kind of radar test darkroom |
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2019
- 2019-06-04 CN CN201920835355.0U patent/CN210572721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095763A (en) * | 2019-06-04 | 2019-08-06 | 北京道锐达科技有限公司 | A kind of radar test darkroom |
| CN110095763B (en) * | 2019-06-04 | 2024-05-28 | 北京道锐达科技有限公司 | Radar test darkroom |
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