CN113203996A - Method, device and system for testing influence of bumper on performance of millimeter wave radar - Google Patents
Method, device and system for testing influence of bumper on performance of millimeter wave radar Download PDFInfo
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- CN113203996A CN113203996A CN202110475694.4A CN202110475694A CN113203996A CN 113203996 A CN113203996 A CN 113203996A CN 202110475694 A CN202110475694 A CN 202110475694A CN 113203996 A CN113203996 A CN 113203996A
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- millimeter wave
- wave radar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
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- Radar Systems Or Details Thereof (AREA)
Abstract
The invention provides a method, a device and a system for testing the influence of a bumper on the performance of a millimeter wave radar. Wherein, a device for testing bumper is to millimeter wave radar performance influence includes: a turntable; the base is slidably arranged on the rotary table and can move on the rotary table along the transverse direction or the longitudinal direction; the tool is erected on the base through a rotating shaft and can axially rotate under the driving of the rotating shaft; the tool is used for arranging a bumper for testing; and the driving module is respectively connected with the base and the rotating shaft and used for driving the movement of the base and the rotation of the rotating shaft. The test device provided by the invention is simple to operate and low in test cost, and can be used for efficiently testing the influence of the bumper on the performance of the millimeter wave radar.
Description
Technical Field
The invention relates to the technical field of vehicle testing, in particular to a method, a device and a system for testing the influence of a bumper on the performance of a millimeter wave radar.
Background
With the popularization of the millimeter wave radar on vehicles, the evaluation and analysis of the influence of the bumper on the performance of the millimeter wave radar is an indispensable key link. In the prior art, a whole bumper is directly used for test analysis. Firstly, the test environment is difficult to build and complex to operate in the mode, and a large test field is needed; secondly, due to the various shapes of the bumpers, each bumper cannot be tested, and the test effect is poor; again, more and more host plants are beginning to evaluate during the vehicle design process, and there are no actual bumpers to test analyze.
Therefore, finding a general method capable of quickly analyzing the influence of the bumper on the performance of the millimeter wave radar is particularly important for providing guidance for installation and verification of the millimeter wave radar on the bumper in the former period.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method, an apparatus and a system for testing the impact of a bumper on the performance of a millimeter wave radar, so as to solve the problem in the prior art that a whole bumper is directly used for test analysis.
To achieve the above and other related objects, the present invention provides an apparatus for testing the impact of a bumper on the performance of a millimeter wave radar, comprising: a turntable; the base is slidably arranged on the rotary table and can move on the rotary table along the transverse direction or the longitudinal direction; the tool is erected on the base through a rotating shaft and can axially rotate under the driving of the rotating shaft; the tool is used for arranging a bumper for testing; and the driving module is respectively connected with the base and the rotating shaft and used for driving the movement of the base and the rotation of the rotating shaft.
In an embodiment of the invention, the tool has at least one arc-shaped clamping groove with one curvature, so as to manufacture the bumper material into the test bumper with at least one curvature.
In an embodiment of the present invention, the apparatus further includes: the angle sensor is arranged on the base and used for measuring the rotation angle of the rotating shaft.
In an embodiment of the present invention, the apparatus further includes: the first bracket is used for arranging a millimeter wave radar and adjusting the height of the millimeter wave radar; and the second bracket is used for arranging the target reflector and adjusting the height of the target reflector.
To achieve the above and other related objects, the present invention provides a system for testing the impact of a bumper on the performance of a millimeter wave radar, comprising: the device is used for testing the influence of the bumper on the performance of the millimeter wave radar; the electronic equipment is connected with the driving module and used for controlling the driving module to adjust the relative position of the bumper for testing and the millimeter wave radar; and the detection data of the millimeter wave radar at each relative position are recorded so as to analyze the influence of the bumper on the performance of the millimeter wave radar.
To achieve the above and other related objects, the present invention provides a method for testing the effect of a bumper on the performance of a millimeter wave radar, comprising: the millimeter wave radar and the target reflector are oppositely arranged at the same height and are spaced by a preset distance; transversely arranging a bumper for testing between the millimeter wave radar and the target reflector, and adjusting the relative position of the bumper for testing and the millimeter wave radar; and recording detection data of the millimeter wave radar at each relative position so as to analyze the influence of the bumper for testing on the performance of the millimeter wave radar.
In an embodiment of the present invention, adjusting the relative position between the bumper for testing and the millimeter wave radar includes: and adjusting one or more combinations of the front-back position, the left-right position and the pitching position of the bumper for testing and the millimeter wave radar.
In an embodiment of the present invention, the method further includes: respectively placing the tested bumpers in arc-shaped clamping grooves with different curvatures in a tool so as to adjust the curvatures of the tested bumpers; for each curvature of the bumper for test, adjusting the relative position of the bumper and the millimeter wave radar; and recording detection data of the millimeter wave radar at each relative position of the bumper for testing and the millimeter wave radar with each curvature, and analyzing the influence of the bumper for testing on the performance of the millimeter wave radar.
In an embodiment of the present invention, adjusting only the left and right positions of the bumper for testing and the millimeter wave radar and recording detection data to analyze performance influence includes: arranging the bumper for testing and the millimeter wave radar respectively perpendicular to the ground; keeping the vertical distance between the center of the millimeter wave radar and the bumper for testing unchanged; adjusting the millimeter wave radar to move along a direction perpendicular to the middle axis of the bumper for testing; calculating the equivalent horizontal included angle after each movement and detection data of the millimeter wave radar under the equivalent horizontal included angle, and analyzing the influence on the performance of the millimeter wave radar under each equivalent horizontal included angle; and the equivalent horizontal included angle is the difference value between the vertical distance of the left edge and the vertical distance of the millimeter wave radar.
In an embodiment of the present invention, the formula for calculating the equivalent horizontal included angle includes:
wherein d1 is the vertical distance between the left edge of the millimeter wave radar and the millimeter wave radar, d2 is the vertical distance between the center of the millimeter wave radar and the millimeter wave radar, and d3 is the vertical distance between the right edge of the millimeter wave radar and the millimeter wave radar; r is the curvature of the bumper for testing, and sd is the vertical distance between the middle axis of the millimeter wave radar and the middle axis of the bumper for testing; py is a distance between the center of the millimeter wave radar and the left and right edges thereof; and delta d is the equivalent horizontal included angle.
As described above, the method, the device and the system for testing the influence of the bumper on the performance of the millimeter wave radar have the following beneficial effects:
firstly, the method overcomes the defects of the prior art, can test and analyze the influence of the bumper on the radar performance in the early stage without testing the bumper of a specific vehicle type, and has convenient test environment construction and simple operation;
secondly, the influence of the bumper on the performance of the radar can be quickly tested and analyzed in a darkroom without passing an external field test, so that the influence of an external field environment on a test result is greatly reduced;
thirdly, the method is carried out based on a darkroom, so that a test field is not required to be additionally opened up, and only a corresponding test tool is required to be manufactured, thereby effectively utilizing the existing resources and greatly saving the test cost.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for testing the influence of a bumper on the performance of a millimeter wave radar according to the present invention.
Fig. 2 is a schematic view of the device shown in fig. 1 from another viewing angle.
Fig. 3 is a schematic structural diagram of the apparatus in the apparatus shown in fig. 1 from a top view.
Fig. 4 is a schematic structural diagram of the device in fig. 1, which is arranged on a base through a rotating shaft.
Fig. 5 is a schematic view showing the placement positions of the radar, the bumper and the target reflector during the test.
FIG. 6 is a flow chart of a method of testing the impact of a bumper on millimeter wave radar performance in accordance with the present invention.
Fig. 7a to 7b are diagrams showing the positional relationship between the millimeter wave radar and the test bumper in each example of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
As shown in fig. 1, the present embodiment provides an apparatus for testing the impact of a bumper on the performance of a millimeter wave radar, which at least includes: revolving stage 1, base 2, frock 3, drive module. Wherein, the bottom of revolving stage 1 can set up the pulley to be convenient for remove the position of whole device, make things convenient for the tester to operate.
The base 2 is slidably provided on the turntable 1 and can move on the turntable 1 in a lateral or longitudinal direction. Specifically, the base 2 is slidably disposed on the turntable 1 through a slide rail bracket 4. As shown in fig. 1, the turntable 1 is provided with a chute 101 along the X-axis direction (i.e., the transverse direction), and the lower end of the slide rail bracket 4 is connected to the chute 101 and can move back and forth in the chute 101 along the X-axis direction. The upper end of the sliding groove 101 is provided with a sliding groove 401, and the lower part of the base 2 is connected with the sliding groove 401 and can move back and forth in the sliding groove 401 along the Y-axis direction (i.e. the longitudinal direction).
As shown in fig. 2 and 3, the tool 3 has a plurality of arc-shaped slots 301 with different curvature radii. The tester puts into different arc draw-in groove 301 with the bumper material, for example a suitable and same technology's of real car bumper rectangle flat plate bumper of size, and this rectangle flat plate bumper can be become the arc bumper of corresponding curvature radius by arc draw-in groove 301 bending to be convenient for test the influence of the bumper of different curvatures to millimeter wave radar performance.
The driving module includes: a power mechanism for controlling the slide rail bracket 4 to move along the X axis, a power mechanism for controlling the base 2 to move along the Y axis, and a power mechanism for controlling the base 2 to generate a pitching angle.
As shown in fig. 2, the power mechanism for controlling the base 2 to generate the pitch angle includes a stepping motor 5 disposed at one end of the base 2, and a worm and gear 6 connected to the stepping motor 5. The base 2 is provided with a rotating shaft 7, referring to fig. 4, two ends of the rotating shaft 7 are fixed on the base 2 by a bracket 701, one end of the rotating shaft 7 passes through the bracket 701 to be connected with the worm gear 6, the middle part of the rotating shaft 7 is used for bearing the tool 3, and the part is suspended relative to the surface of the base 2. So, step motor 5 drives worm gear 6 and rotates, and worm gear 6 drives pivot 7 and rotates, and then realizes the change of the every single move angle of frock 3. In addition, as shown in fig. 2, in order to know the pitch angle of the tool 3, an angle sensor 8 is further provided at one end of the base 2.
As shown in fig. 1, in an embodiment, the apparatus for testing the impact of a bumper on the performance of a millimeter wave radar of the present application further includes a first bracket 9 for setting the millimeter wave radar 10 and adjusting the height of the millimeter wave radar 10. In addition, in an embodiment, the device for testing the influence of the bumper on the performance of the millimeter wave radar further comprises a second bracket (not shown) for setting a target reflector (such as a corner reflector) and adjusting the height of the target reflector.
As shown in fig. 5, the arrangement of the present embodiment is shown in use, and the positions of the millimeter wave radar 10, the bumper 11, and the target reflector 12 should be adjusted to the same level. The components including the driving module of the stepping motor 5, the angle sensor 8, the millimeter wave radar 10 and the like are in communication connection with external electronic equipment, so that a system for testing the influence of a bumper on the performance of the millimeter wave radar is formed. The electronic device 10 may be a desktop, a laptop, a tablet computer, a smart phone, etc. and is used to control the driving module to adjust the relative position between the bumper for testing and the millimeter wave radar, such as: the front-back position, the left-right position, the pitching position and the like are also used for recording detection data of the millimeter wave radar at each relative position so as to analyze the influence of the bumper on the performance of the millimeter wave radar.
It should be noted that the device for testing the impact of the bumper on the performance of the millimeter wave radar is not limited to the structure shown in fig. 1 to 4, and those skilled in the art can reasonably modify or change the above embodiments within the spirit of the present invention and should be considered as the protection scope of the present application.
As shown in fig. 6, the present application also provides a method for testing the impact of a bumper on the performance of a millimeter wave radar, which can be implemented by the system for testing the impact of a bumper on the performance of a millimeter wave radar described in the above embodiment or similar systems, and mainly includes the following steps:
s61: the millimeter wave radar and the target reflector are oppositely arranged at the same height and are spaced by a preset distance;
s62: transversely arranging a bumper for testing between the millimeter wave radar and the target reflector, and adjusting the relative position of the bumper for testing and the millimeter wave radar, such as: the bumper for testing is combined with one or more of the front-back position, the left-right position and the pitching position of the millimeter wave radar;
s63: and recording detection data of the millimeter wave radar at each relative position so as to analyze the influence of the bumper for testing on the performance of the millimeter wave radar.
In one embodiment, before step S61, the method further includes: placing the bumper to be tested in an arc-shaped clamping groove with curvature in a tool so as to adjust the curvature of the bumper to be tested; for the test bumper of this curvature, step S62 is performed to adjust its relative position with respect to the millimeter wave radar. And then, placing the bumper for test in arc-shaped clamping grooves with other curvatures in the tool, and executing the step S62 again. In this way, in step S63, the detection data of the millimeter wave radar at each relative position of the test bumper and the millimeter wave radar at each curvature is recorded, so as to analyze the influence of the test bumper on the performance of the millimeter wave radar.
The principle of implementation of the method will be explained in detail below by four specific examples in connection with fig. 7 a-7 b.
Example I, testing and analyzing the influence of different distances from a radar to a bumper on the performance of a radar
Step a: the flat-plate-type rectangular bumper with the length of L and the width of W and the proper size is bent into an arc with the curvature radius of R along the long edge L by using a testing tool, and the tool is provided with a plurality of arc clamping grooves with different curvature radii. And adjusting the rotating shaft of the testing device to ensure that the wide side W of the bumper is vertical to the ground, the pitch angle of the bumper is 0 degrees, the included angle between the millimeter wave radar and the bumper in the pitch direction is also 0 degrees, and the height H1 of the millimeter wave radar is adjusted through the first support to ensure that the height H1 is as high as that of the bumper and the corner reflector.
Step b: by adjusting the movement of the base of the testing device on the slide rail bracket, the horizontal center of the millimeter wave radar is aligned with the horizontal center of the arc-shaped bumper, that is, the horizontal offset distance sd of the horizontal center of the millimeter wave radar offset from the horizontal center of the arc-shaped bumper is 0, the horizontal distance from the horizontal center of the millimeter wave radar cover to the horizontal center of the radar is two points on the left and right of Py, and the distances d1 and d3 from the millimeter wave radar cover to the bumper are equal, as shown in fig. 7 a.
Step c: the vertical distance d2 from the horizontal center of the millimeter wave radar to the bumper is adjusted by adjusting the movement of the slide rail bracket of the testing device on the rotary table, and the influence on the performance of the millimeter wave radar at different distances d2 is analyzed by using a computer test;
step d: the difference value between d1 and d3 is delta d by adjusting the movement of the base of the testing device on the slide rail bracket, and the influence on the performance of the radar is tested and analyzed when the distance d2 is different;
example two, test analysis of the influence of different included angles between the radar and the bumper in the horizontal direction on the performance of the radar
Step e: keeping a pitching included angle FY between a radar and a bumper unchanged, keeping a distance d2 between a horizontal center of the fixed radar and the bumper and a curvature radius R of the bumper unchanged, keeping the height H1 of the millimeter wave radar as high as the bumper and a corner reflector, adjusting a horizontal offset distance sd between the radar and the bumper by adjusting the movement of a base of a testing device on a slide rail bracket, conveniently calculating d1 and d3 and a difference value delta d thereof by the following formula, and testing and analyzing the influence on the performance of the radar when different equivalent horizontal included angles, namely different difference values delta d, are different;
wherein d1 is the vertical distance between the left edge of the millimeter wave radar and the millimeter wave radar, d2 is the vertical distance between the center of the millimeter wave radar and the millimeter wave radar, and d3 is the vertical distance between the right edge of the millimeter wave radar and the millimeter wave radar; r is the curvature of the bumper for testing, and sd is the vertical distance between the middle axis of the millimeter wave radar and the middle axis of the bumper for testing; py is a distance between the center of the millimeter wave radar and the left and right edges thereof; d is the equivalent horizontal included angle;
step f: adjusting the pitch angle of the tool by adjusting a rotating shaft of the testing device, so that the pitch included angle FY between the radar and the bumper is adjusted to be not 0 degrees, and testing and analyzing the influence on the performance of the radar when different equivalent horizontal included angles, namely different difference values delta d, exist;
example three, test analysis of the impact of different curvatures of the bumper on the radar performance
Step g: keeping a pitching included angle FY between the radar and the bumper unchanged at 0 degree, keeping a distance d2 from a horizontal center of the fixed radar to the bumper unchanged, keeping a horizontal offset distance sd at 0, keeping the height H1 of the millimeter wave radar as high as the bumper and a corner reflector, and testing and analyzing the influence of different curvature radiuses R on the performance of the radar;
step h: adjusting the horizontal offset distance sd, keeping the pitching included angle FY at 0 degrees and keeping the distance d2 unchanged, and testing and analyzing the influence of different curvature radiuses R on the radar performance;
step i: keeping the horizontal offset distance sd to be 0, adjusting the pitching included angle FY to be not 0 degrees, keeping the distance d2 unchanged, and testing and analyzing the influence of different curvature radiuses R on the radar performance;
step j: adjusting the horizontal offset distance sd as the distance in the step h, adjusting the pitching included angle FY as the angle in the step i, and testing and analyzing the influence of different curvature radiuses R on the radar performance;
example four, test analysis of the impact of different pitch angles of the bumper and the radar on the performance of the radar
Step k: the distance d2 from the horizontal center of the radar to the bumper and the curvature radius R are fixed to be unchanged, the horizontal offset distance sd is 0, the height H1 of the millimeter wave radar is kept as high as the bumper and a corner reflector, and the influence of different pitching included angles FY of the bumper and the radar on the performance of the radar is tested and analyzed;
step l: and adjusting the horizontal offset distance sd, and testing and analyzing the influence of different pitching included angles FY of the bumper and the radar on the performance of the radar.
It should be noted that the above four examples should not be considered as limiting the scope of protection of the present application, and those skilled in the art can select one of the vertical distance, the horizontal offset distance, the pitch angle, and the curvature of the test bumper of the millimeter wave radar and the test bumper by controlling the variable method and study the performance impact caused by the change of the other three aspects, or select two of the variables by controlling the variable method and study the performance impact caused by the change of the other two aspects, or select three of the variables by controlling the variable method and study the performance impact caused by the change of the other one aspect, or study the performance impact caused by each change in the combination of the four aspects.
In conclusion, the method, the device and the system for testing the influence of the bumper on the performance of the millimeter wave radar have the advantages of simple operation and low testing cost, can efficiently test the influence of the bumper on the performance of the millimeter wave radar, effectively overcome various defects in the prior art and have high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An apparatus for testing the impact of a bumper on millimeter wave radar performance, comprising:
a turntable;
the base is slidably arranged on the rotary table and can move on the rotary table along the transverse direction or the longitudinal direction;
the tool is erected on the base through a rotating shaft and can axially rotate under the driving of the rotating shaft; the tool is used for arranging a bumper for testing;
and the driving module is respectively connected with the base and the rotating shaft and used for driving the movement of the base and the rotation of the rotating shaft.
2. The apparatus of claim 1, wherein the tooling has at least one curved slot for forming the at least one curved test bumper from the bumper material.
3. The apparatus of claim 1, further comprising: the angle sensor is arranged on the base and used for measuring the rotation angle of the rotating shaft.
4. The apparatus of claim 1, further comprising:
the first bracket is used for arranging a millimeter wave radar and adjusting the height of the millimeter wave radar;
and the second bracket is used for arranging the target reflector and adjusting the height of the target reflector.
5. A system for testing the impact of a bumper on millimeter wave radar performance, comprising:
the device for testing the influence of the bumper on the performance of the millimeter wave radar according to any one of claims 1 to 4;
the electronic equipment is connected with the driving module and used for controlling the driving module to adjust the relative position of the bumper for testing and the millimeter wave radar; and the detection data of the millimeter wave radar at each relative position are recorded so as to analyze the influence of the bumper on the performance of the millimeter wave radar.
6. A method for testing the impact of a bumper on the performance of a millimeter wave radar, comprising:
the millimeter wave radar and the target reflector are oppositely arranged at the same height and are spaced by a preset distance;
transversely arranging a bumper for testing between the millimeter wave radar and the target reflector, and adjusting the relative position of the bumper for testing and the millimeter wave radar;
and recording detection data of the millimeter wave radar at each relative position so as to analyze the influence of the bumper for testing on the performance of the millimeter wave radar.
7. The method of claim 6, wherein adjusting the relative position of the test bumper and the millimeter wave radar comprises: and adjusting one or more combinations of the front-back position, the left-right position and the pitching position of the bumper for testing and the millimeter wave radar.
8. The method of claim 7, further comprising:
respectively placing the tested bumpers in arc-shaped clamping grooves with different curvatures in a tool so as to adjust the curvatures of the tested bumpers;
for each curvature of the bumper for test, adjusting the relative position of the bumper and the millimeter wave radar;
and recording detection data of the millimeter wave radar at each relative position of the bumper for testing and the millimeter wave radar with each curvature, and analyzing the influence of the bumper for testing on the performance of the millimeter wave radar.
9. The method of claim 7, wherein adjusting only left and right positions of the test bumper and the millimeter wave radar and recording probe data to analyze performance effects comprises:
arranging the bumper for testing and the millimeter wave radar respectively perpendicular to the ground;
keeping the vertical distance between the center of the millimeter wave radar and the bumper for testing unchanged;
adjusting the millimeter wave radar to move along a direction perpendicular to the middle axis of the bumper for testing;
calculating the equivalent horizontal included angle after each movement and detection data of the millimeter wave radar under the equivalent horizontal included angle, and analyzing the influence on the performance of the millimeter wave radar under each equivalent horizontal included angle; and the equivalent horizontal included angle is the difference value between the vertical distance of the left edge and the vertical distance of the millimeter wave radar.
10. The method of claim 9, wherein the formula for calculating the equivalent horizontal included angle comprises:
wherein d1 is the vertical distance between the left edge of the millimeter wave radar and the millimeter wave radar, d2 is the vertical distance between the center of the millimeter wave radar and the millimeter wave radar, and d3 is the vertical distance between the right edge of the millimeter wave radar and the millimeter wave radar; r is the curvature of the bumper for testing, and sd is the vertical distance between the middle axis of the millimeter wave radar and the middle axis of the bumper for testing; py is a distance between the center of the millimeter wave radar and the left and right edges thereof; and delta d is the equivalent horizontal included angle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110475694.4A CN113203996A (en) | 2021-04-29 | 2021-04-29 | Method, device and system for testing influence of bumper on performance of millimeter wave radar |
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| CN202110475694.4A CN113203996A (en) | 2021-04-29 | 2021-04-29 | Method, device and system for testing influence of bumper on performance of millimeter wave radar |
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Cited By (1)
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| EP4332587A1 (en) * | 2022-08-30 | 2024-03-06 | Aptiv Technologies Limited | Sensor mounting device for radar testing |
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