CN211061611U - Vehicle-mounted radar testing device - Google Patents
Vehicle-mounted radar testing device Download PDFInfo
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- CN211061611U CN211061611U CN201920414120.4U CN201920414120U CN211061611U CN 211061611 U CN211061611 U CN 211061611U CN 201920414120 U CN201920414120 U CN 201920414120U CN 211061611 U CN211061611 U CN 211061611U
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Abstract
A vehicle-mounted radar testing device is formed by combining a vehicle-mounted radar compact range antenna testing system and a target radar simulator testing system, and comprises a computer, a measuring instrument, a control device, a radio frequency unit, a tested radar, a multi-axis rotary table, an arc-shaped sliding rail, a target radar simulator and a plane wave generator; the computer is respectively connected with the control device and the test instrument, the operation of the system is controlled through the control device, and the test instrument is connected with the tested radar, the target radar simulator and the plane wave generator through the radio frequency unit; the utility model discloses thereby can realize thereby the passive test of radar antenna and obtain indexes such as the gain and the directional diagram of antenna in limited test place, realize the active radio frequency parameter test of radar transmission and receipt and the range speed and the angle test of target radar simulator simultaneously, save space and cost.
Description
Technical Field
The utility model relates to a radar test system especially relates to an on-vehicle radar testing arrangement with arc slide rail and plane wave generator for test on-vehicle radar's radiation performance.
Background
The radar is a device that irradiates a target with an electromagnetic wave and receives an echo thereof, thereby obtaining information on a distance, a relative radial velocity, an angle, and the like of the target to an electromagnetic wave emission point.
The millimeter wave radar is used as a safety guarantee of the vehicle-mounted radar, and is necessary to be accurately researched, developed and tested, but the vehicle-mounted radar is difficult to carry out multidirectional target simulation test and radiation parameter test on a receiving and transmitting link in a limited space, and particularly is applied to a millimeter wave radar test system on a production line. There is an urgent need for a system that can be easily implemented and can quickly and efficiently perform multi-directional target simulation testing on a radar.
Meanwhile, the radar is also an antenna, and a user has relatively high requirements on electromagnetic parameters such as radiation signal intensity, gain, directivity, beam width and the like when using the radar, and generally, electromagnetic characteristics such as amplitude, efficiency and the like of the antenna need to be measured in a far field. If the outdoor far-field condition is adopted, the influence of the weather environment is large, and the path loss becomes large along with the increase of the far-field distance, so that the precision of the test is reduced, which is also a problem which cannot be ignored. The advent of compact range devices partially solved the 2 problems described above.
However, the compact range antenna test system and the slide rail type vehicle-mounted radar test system are used as two independent test systems, and both require a matched microwave darkroom and corresponding test equipment, so that the requirement on the field is high, and the cost is high, so that a more efficient, space-saving and cost-saving test scheme is required.
The utility model has the following contents:
in order to overcome the prior art not enough, the utility model provides an with an L type vehicle radar testing arrangement, can effectively carry out diversified target simulation and radiation performance test's system to the radar fast.
The utility model discloses technical scheme as follows: a vehicle-mounted radar testing device comprises a control device, a radio frequency unit, a multi-axis rotary table and a tested radar, wherein the control device is connected with the multi-axis rotary table to drive the rotary table to rotate, and the tested radar is arranged on the multi-axis rotary table; further comprising: the system comprises an arc-shaped slide rail, a target radar simulator and a plane wave generator; the target radar simulator comprises at least one arc-shaped slide rail and a target radar simulator positioned on the arc-shaped slide rail; the control device is connected with the arc-shaped slide rail to drive the target radar simulator to slide on the arc-shaped slide rail; at least one plane wave generator is opposite to the radar to be detected; and the radio frequency unit is respectively connected with the target radar simulator, the plane wave generator and the radar to be detected.
Furthermore, the plane wave generator and the target radar simulator are arranged at two ends in the same L-shaped microwave darkroom, the tested radar and the multi-axis rotary table are arranged at the corners in the microwave darkroom, and the darkroom separates two different systems, so that the two testing systems are integrated and do not interfere with each other, and the space and the cost are effectively saved.
Further, the plane wave generator comprises a parabolic metal reflecting surface compact field with a feed source, or a lens type compact field, or a compact field generator based on a probe array antenna; the feed source comprises an open waveguide feed source, or a horn antenna feed source, or a narrow-band feed source and the like. For compact field reflectors based on probe arrays, which include a plurality of broadband antenna array elements distributed in 1-or 2-dimensions at intervals on a plane, the compact field reflectors based on antenna arrays formed by adjusting the amplitude and phase of phased array antennas (i.e., beam forming networks) can generate plane waves required for testing in a specified area.
Further, the radar to be detected comprises a vehicle-mounted radar; the multi-axis turntable includes: an azimuth rotating shaft, a translation shaft, a polarization rotating shaft and a pitching shaft; the multi-axis turntable comprises one of the four rotating shafts or the combination of any rotating shaft.
Furthermore, the multi-axis turntable is positioned at the circle center of the arc-shaped slide rails, and the arc-shaped slide rails can be arc-shaped slide rails with the same radius or the same circle center and different radii; an abnormal trigger switch device or a limit switch is arranged at the edge position of the arc-shaped tail end of the arc-shaped slide rail guide rail, and an abnormal trigger switch device or a limit switch is arranged on at least one shaft of the multi-shaft rotary table.
Further, the vehicle-mounted radar testing device further comprises a computer and a measuring instrument, the computer is connected with the measuring instrument and the control device, and the measuring instrument is connected with the radio frequency unit.
Further, the measuring instrument includes: a spectrometer, a network analyzer, an oscilloscope, a vector signal generator, or a vector signal analyzer.
Furthermore, the control device comprises one or any combination of a slide rail driving unit, a slide rail control unit, a turntable driving unit, an instrument switching unit and a switch switching unit, wherein the radio frequency unit comprises a radio frequency amplifier and an attenuator, the turntable control unit and the turntable driving unit are connected with the multi-axis turntable, and the slide rail driving unit and the slide rail control unit are connected with the arc-shaped slide rail; the radio frequency amplifier and the switch switching unit are connected with the plane wave generator.
Furthermore, the computer is connected with the measuring instrument through a GPIB or USB interface and is connected with the control device through a control interface, and the measuring instrument is connected with the measured radar, the plane wave generator and the target radar simulator through a radio frequency unit.
Further, on-vehicle radar testing arrangement is still including fixing the pole of embracing on the slider on the arc slide rail, the upper end fixed target radar simulator of embracing the pole slides on the arc slide rail in order to drive target radar simulator.
Furthermore, the vehicle-mounted radar testing device is placed in a microwave dark room with wave-absorbing materials.
Further, the target radar simulator can simulate one or more radar simulation targets or radio frequency receiving and transmitting units on the arc-shaped slide rail.
Furthermore, the vehicle-mounted radar testing device is used for various electromagnetic parameter tests and radar target simulation tests on a radio frequency transceiving link of the radar antenna.
Preferably, the support pole that embraces that is located on the arc slide rail can contain the pivot, the pivot setting is in the top of support pole is embraced, is connected the target radar simulator.
Preferably, one or more support poles may be included adjacent the arcuate track.
Further, one or more radar simulation targets may be included on the support poles near the curved slide rails.
Further, the computer is a common commercial computer or a special computer.
The beneficial effects of the utility model reside in that in on-vehicle radar test system, can be to different test environment, different test demands, thereby carry out the test of compact field antenna on same antenna test field and obtain the measurement of indexes such as gain and the directional diagram of antenna in order to realize the passive test of radar antenna, thereby can realize the passive test of radar antenna simultaneously and obtain the measurement of indexes such as the gain of antenna and directional diagram, and various electromagnetic parameter test and radar target simulation test on the radio frequency transceiving link of radar antenna, can use arc slide rail cooperation target radar simulator test field to carry out diversified target simulation test and the active radiation parameter test on the transceiving link to the radar fast effectively simultaneously, L type darkroom makes two sets of test system integration while each other do not interfere with effectual space and cost of having saved again.
The tests of various electromagnetic parameters on the radio frequency transceiving link of the radar antenna comprise equivalent omnidirectional radiation power, transmission frequency precision, phase noise, transmission channel switch isolation, frequency modulation bandwidth, gain flatness, frequency modulation linearity, receiving antenna gain and the like. The radar target simulation test comprises the capabilities of ranging, speed measuring and angle measuring of the whole radar.
Description of the drawings:
fig. 1 shows a schematic diagram of a vehicle radar testing device according to the present invention.
Fig. 2 shows a schematic diagram of an embodiment of the vehicle radar testing device according to the present invention.
Fig. 3 shows a schematic diagram of another embodiment of the vehicle radar testing device according to the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, the vehicle-mounted radar testing apparatus with the arc-shaped slide rail and the plane wave generator includes: the system comprises a computer 1, a measuring instrument 2, a control device 3, a radio frequency unit 4, a multi-axis turntable 5, a measured radar 6, an arc-shaped slide rail 7, a target radar simulator 9 and a plane wave generator 8; the computer 1 is connected with the measuring instrument 2 and the control device 3, the measuring instrument 2 is connected with the radio frequency unit 4, the control device 3 is connected with a multi-axis turntable 5 to drive the turntable to rotate, and the radar 6 to be measured is arranged on the multi-axis turntable 5; at least one arc-shaped slide rail 7 and a target radar simulator 9 positioned on the arc-shaped slide rail 7; the control device 3 is connected with the arc-shaped slide rail 7 to drive the target radar simulator 9 to slide on the arc-shaped slide rail 7; at least one plane wave generator 8 is opposite to the radar 6 to be detected; the radio frequency unit 4 is respectively connected with the target radar simulator 9, the plane wave generator 8 and the radar to be tested 6.
The plane wave generator 8, the target radar simulator 9 and the measured radar 6 are arranged in a triangle in the horizontal direction, and are positioned at the corners of the triangle. As shown in fig. 2 and 3, the plane wave generator 8, the target radar simulator 9 and the radar under test 6 are in a right triangle shape in the horizontal direction, the radar under test 6 is located at a right angle of the right triangle, and the plane wave generator 8 and the target radar simulator 9 are respectively disposed at the other two corners of the right triangle. The three components (the plane wave generator 8, the target radar simulator 9 and the tested radar 6) are placed at the positions, so that the size of the whole vehicle-mounted radar testing device is minimized under the condition that the testing precision is guaranteed, the field is saved, and the cost is saved.
The number of the multi-axis turntable steering arc-shaped slide rails 7 can be one or more; when the number of the arc-shaped sliding rails 7 is multiple, the radius of the arc-shaped sliding rails 7 can be the same or different. The radii of the plurality of arc-shaped slide rails 7 are the same, and the plurality of arc-shaped slide rails 7 are sequentially arranged on the circumference according to the same circle center (the position close to the multi-axis turntable 5 is the front position, and the position far from the multi-axis turntable 5 is the rear position). In addition, when the radii of the plurality of arc-shaped slide rails 7 are different, the plurality of arc-shaped slide rails 7 are arranged back and forth according to the distance from the center of the circle (the position close to the multi-axis turntable 5 is the front position, and the position far from the multi-axis turntable 5 is the rear position). Since it is simulated that the vehicle with the onboard radar is running on a highway. Preferably, the plurality of slide rails 7 can be arranged in a front-back manner according to the distance from the center of a circle, and the front-back arrangement can be a forward front-back arrangement or an oblique front-back arrangement. The radar target simulator can only simulate the distance and speed information of a target generally, and the arc-shaped sliding rail 7 can realize the simulation of the angle of the radar target in cooperation with the radar simulator.
As shown in fig. 2, the system is switched to the multi-target radar simulation system by adjusting the direction of the multi-axis turntable 5 to turn the arc-shaped slide rail 7. As shown in figure 3, the multi-axis turntable 5 is adjusted to enable the tested radar to face the plane wave generator 8, and the system is switched to a vehicle-mounted radar compact range antenna testing system. The compact antenna test can be carried out on the same test field to realize the passive test of the radar antenna so as to obtain the measurement of indexes such as gain and directional diagram of the antenna and the active radiation parameter test on a receiving radar transmission link; meanwhile, the target radar simulator test field can be used for quickly and effectively carrying out multi-directional radar target simulation test on the radar, including the capabilities of ranging, speed measurement and angle measurement of the whole radar.
Example 1:
as shown in fig. 2, there are two arc-shaped slide rails 7, the multi-axis turntable 5 is a two-axis turntable composed of horizontal polarization rotating shafts, the direction of the multi-axis turntable 5 turning to the arc-shaped slide rails 7 is adjusted, the system is switched to a multi-target radar simulation system, and in the measuring process:
1) surveyed radar 6 and put on multiaxis revolving stage 5, put radar simulator 9 on the arc slide rail, set up radar simulator distance and speed isoparametric, simulate according to the mode of setting for behind the radar transmitting signal is received to radar target simulator 9, produce echo signal, then the transmission carries out echo simulation test for the radar of awaiting measuring, read the distance value that is surveyed radar received, speed, azimuth, judge whether radar test parameter is in the error allowed band, can detect out surveyed radar test distance value, speed, azimuth's performance and precision.
2) The measured radar 6 is placed on the multi-axis rotary table 5, the target radar simulator 9 can generate 2 different targets on the two arc-shaped slide rails respectively, one target radar simulator 9 is placed on a holding rod 10 of the front arc-shaped slide rail, and the other target radar simulator 9 is placed on a holding rod 10 of the rear arc-shaped slide rail (the position close to the multi-axis rotary table 5 is the front position, and the position far away from the multi-axis rotary table 5 is the rear position). The measured radar 6 and the target radar simulator 9 positioned on the front arc-shaped slide rail form a straight line, the measured radar 6 and the target radar simulator 9 positioned on the rear arc-shaped slide rail form another straight line, and an included angle is formed between the two straight lines. The two target radar simulators are set with different distance, speed and azimuth angle values, the minimum distance difference value which can read signals of the 2 target radar simulators is distance resolution, the minimum speed difference value which can read signals of the 2 target radar simulators is speed resolution, and the minimum included angle value which can be formed by the two straight lines is azimuth resolution.
Example 2:
as shown in fig. 3, a multi-axis turntable 5 is adjusted to enable a tested radar to face a plane wave generator 8, the plane wave generator 8 is a reflecting surface plus a feed source and is placed right in front of the tested radar 6, the tested radar 6 is arranged on the multi-axis antenna testing turntable 5, the feed source sends spherical waves, ideal plane waves are obtained in the area of the antenna testing turntable 5 through the reflection surface and the rotation of the multi-axis antenna testing turntable 5 is controlled by a computer 1 through a control device 3, the multi-axis turntable 5 is a two-axis turntable consisting of horizontal rotation polarization rotating shafts, in a standard IEEE coordinate system, the polarization rotating shafts are fixed at 0 degree, the horizontal turntable rotates 360 degrees to obtain electromagnetic parameters on a plane with antenna phi being 0 degree, the horizontal turntable is fixed at 90 degrees to obtain electromagnetic parameters on a plane with antenna theta being 90 degrees, and the two rotating shafts rotate simultaneously and are matched with each other, the multi-azimuth measurement of the antenna to be measured can be realized, and the radio frequency radiation index of the 3D spherical surface (or partial spherical surface) of the antenna to be measured is obtained.
Furthermore, the tested radar can be subjected to active testing. The active test is that the product test is electrified, and aims to verify the radio frequency performance of the product before the performance test of the whole product. The active test on the radar radio frequency transceiving link can be realized, and the active test comprises equivalent omnidirectional radiation power, transmission frequency precision, phase noise, transmission channel switch isolation, frequency modulation bandwidth, gain flatness, frequency modulation linearity, receiving antenna gain and the like.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The vehicle-mounted radar testing device is characterized by comprising a control device (3), a radio frequency unit (4), a multi-axis turntable (5) and a tested radar (6), wherein the control device (3) is connected with the multi-axis turntable (5) to drive the turntable to rotate, and the tested radar (6) is arranged on the multi-axis turntable (5); further comprising: the device comprises an arc-shaped slide rail (7), a target radar simulator (9) and a plane wave generator (8);
at least one arc-shaped sliding rail (7) and a target radar simulator (9) positioned on the arc-shaped sliding rail (7); the control device (3) is connected with the arc-shaped sliding rail (7) to drive the target radar simulator (9) to slide on the arc-shaped sliding rail (7); at least one plane wave generator (8) is opposite to the radar (6) to be detected;
and the radio frequency unit (4) is respectively connected with the target radar simulator (9), the plane wave generator (8) and the radar to be detected (6).
2. A vehicle radar testing device according to claim 1, characterized in that the plane wave generator (8), the target radar simulator (9) and the radar under test (6) and the multi-axis turret are placed in a triangular position in a microwave anechoic chamber.
3. A vehicle-mounted radar testing device according to claim 2, wherein the positions where the plane wave generator (8), the target radar simulator (9), the radar under test (6) and the multi-axis turret (5) are placed constitute a right triangle, wherein the radar under test (6) and the multi-axis turret (5) are located at right-angled vertex positions.
4. A vehicle radar testing device according to claim 1, characterized in that said plane wave generator (8) comprises a parabolic metal reflector compact with feed, or a lensed compact, or a compact field generator based on a probe array antenna; the feed comprises an open waveguide feed, or a horn antenna feed, or a narrow band feed.
5. A vehicle radar testing device according to claim 1, characterized in that the radar under test (6) comprises a vehicle radar; the multi-axis turntable (5) comprises: one or the combination of any several rotating shafts of an azimuth rotating shaft, a translation shaft, a polarization rotating shaft and a pitching shaft.
6. The vehicle-mounted radar testing device according to claim 1, wherein the multi-axis turntable (5) is located at the center of the arc-shaped slide rails (7), and the arc-shaped slide rails (7) can be arc-shaped slide rails (7) with the same radius or the same center and different radii; the arc-shaped sliding rail (7) is matched with a radar simulator to realize the simulation of the radar target angle; an abnormal trigger switch device or a limit switch is arranged at the edge position of the arc-shaped tail end of the guide rail of the arc-shaped slide rail (7), and an abnormal trigger switch device or a limit switch is arranged on at least one shaft of the multi-shaft rotary table (5).
7. A vehicle radar testing device according to claim 1, further comprising a computer (1) and a measuring instrument (2), wherein said computer (1) is connected to said measuring instrument (2) and said control device (3), and wherein said measuring instrument (2) is connected to said radio frequency unit (4).
8. The vehicle-mounted radar testing device according to claim 1, wherein the control device (3) comprises one or any combination of a slide rail driving unit, a slide rail control unit, a rotary table driving unit, an instrument switching unit and a switch switching unit; the radio frequency unit (4) comprises a radio frequency amplifier and an attenuator; the rotary table control unit and the rotary table driving unit are connected with the multi-axis rotary table (5), and the slide rail driving unit and the slide rail control unit are connected with the arc-shaped slide rail (7); the radio frequency amplifier and the switch switching unit are connected with the plane wave generator (8).
9. A vehicle radar testing device according to claim 7, wherein said computer (1) is connected to said measuring instrument (2) via a GPIB or USB interface, and said computer is connected to said control device (3) via a control interface.
10. The vehicle-mounted radar testing device according to any one of claims 1 to 9, further comprising a holding pole (10) fixed on a sliding block on the arc-shaped sliding rail (7), wherein a target radar simulator (9) is fixed at the upper end of the holding pole (10) to drive the target radar simulator (9) to slide on the arc-shaped sliding rail (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920414120.4U CN211061611U (en) | 2019-03-29 | 2019-03-29 | Vehicle-mounted radar testing device |
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| CN201920414120.4U CN211061611U (en) | 2019-03-29 | 2019-03-29 | Vehicle-mounted radar testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526469A (en) * | 2020-12-22 | 2021-03-19 | 南京理工大学 | Vehicle-mounted millimeter wave radar test system |
| CN113419116A (en) * | 2021-06-18 | 2021-09-21 | 一汽奔腾轿车有限公司 | Passive performance test system and test method suitable for whole vehicle-level antenna |
| CN114325133A (en) * | 2021-11-26 | 2022-04-12 | 中国电子科技集团公司第三十九研究所 | Microwave darkroom compact range test system |
| CN114384893A (en) * | 2021-12-29 | 2022-04-22 | 广东一诺维新科技有限公司 | System and method for testing automobile ADAS in semi-anechoic chamber |
| CN116087957A (en) * | 2023-02-11 | 2023-05-09 | 思佰川技术(惠州)有限公司 | Millimeter wave radar darkroom-based multi-target application scene simulation system |
-
2019
- 2019-03-29 CN CN201920414120.4U patent/CN211061611U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526469A (en) * | 2020-12-22 | 2021-03-19 | 南京理工大学 | Vehicle-mounted millimeter wave radar test system |
| CN113419116A (en) * | 2021-06-18 | 2021-09-21 | 一汽奔腾轿车有限公司 | Passive performance test system and test method suitable for whole vehicle-level antenna |
| CN114325133A (en) * | 2021-11-26 | 2022-04-12 | 中国电子科技集团公司第三十九研究所 | Microwave darkroom compact range test system |
| CN114384893A (en) * | 2021-12-29 | 2022-04-22 | 广东一诺维新科技有限公司 | System and method for testing automobile ADAS in semi-anechoic chamber |
| CN114384893B (en) * | 2021-12-29 | 2023-12-08 | 深圳一诺维新科技有限公司 | Semi-anechoic chamber automobile ADAS test system and method |
| CN116087957A (en) * | 2023-02-11 | 2023-05-09 | 思佰川技术(惠州)有限公司 | Millimeter wave radar darkroom-based multi-target application scene simulation system |
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