Radar anti-interference test system

Abstract

The utility model discloses a radar anti-interference test system, comprising a test box used for installing a radar to be tested; the interference radar is arranged in the test box and is used for transmitting an interference signal; and the metal triangular cone is arranged in the test box and is located in the detection area of the radar to be tested. According to the utility model, the overall production and manufacturing cost of equipment and the later use and maintenance cost of the equipment can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field, especially radar anti -interference test system of a kind of. BACKGROUND

[0002] With the development and popularization of automatic driving car, automatic driving car is more and more intelligent, and more and more widely used. Whether it is auxiliary driving function or automatic driving function, it needs to be detected and perceived by various vehicle-mounted radars to realize various functions of auxiliary driving or automatic driving. At present, more and more automobile manufacturers configure radars in the cars they produce and sell. In order to ensure the performance and quality of automobile electronic products, the radars need to be tested for anti-interference.

[0003] At present, the signal generator is used for 76GHz-81GHz automotive radar signal anti-interference test, combined with frequency multiplier and gain antenna as interference source, and radar target simulator is used to generate target as reference target. However, this method has high software and hardware cost, and needs professional engineers or trained operators to operate, which is not easy to start. In addition, the test instrument needs regular maintenance and calibration, and the use and maintenance cost is high. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem of high cost of existing radar anti-interference test system. The utility model provides a kind of radar anti-interference test system, which can reduce the overall production cost of equipment, and the cost of equipment use and maintenance in later period.

[0005] To solve the above technical problems, the embodiment of the utility model discloses a kind of radar anti-interference test system, comprising: test box, for installing radar to be measured;Interference radar, be located in the test box, the interference radar is used to emit interference signal;Metal triangular pyramid, be located in the test box, and located in the detection area of the radar to be measured.

[0006] The above technical scheme is used. The radar to be measured, the interference radar and the metal triangular pyramid are installed in the test box. The interference radar is used as the signal interference source, and the metal triangular pyramid is used as the reference target. The metal triangular pyramid is located in the detection area of the radar to be measured. Therefore, the detection result of the radar to be measured on the metal triangular pyramid under the signal interference of the interference radar can be obtained, so as to feed back the anti-interference performance test result of the radar to be measured.

[0007] To sum up, the application adopts an interference radar as a signal interference source and a metal triangular pyramid as a reference target, compared with an implementation in which a signal generator, a frequency multiplier and a gain antenna are combined as an interference source and a radar target simulator is used as a reference target, the device of the embodiment has low overall production and manufacturing costs, and since the signal interference source is a radar, the signal interference source can be replaced at any time if it is damaged or has other problems, without the need for regular calibration, thereby reducing the use and maintenance costs of the device.

[0008] According to another specific embodiment of the application, the interference radar and the radar under test have the same working frequency.

[0009] The above technical solution has the advantages that the interference radar and the radar under test have the same working frequency, the interference signal emitted by the interference radar can accurately fall within the receiving frequency band of the radar under test, is more likely to be received and processed by the radar under test, and cannot be filtered out or attenuated due to frequency mismatch, thereby maximizing the interference effect and effectively reducing the signal-to-noise ratio of the radar under test, and significantly affecting the target detection, tracking and identification capabilities of the radar under test.

[0010] According to another specific embodiment of the application, the test box includes first and second side walls arranged opposite to each other, the first side wall is used to connect the radar under test, and the second side wall is used to connect the interference radar.

[0011] According to another specific embodiment of the application, the interference radar and the radar under test are arranged opposite to each other.

[0012] The above technical solution has the advantages that the interference radar and the radar under test are arranged opposite to each other, so that the interference signal emitted by the interference radar propagates to the radar under test in the most direct path, reducing the attenuation and scattering of the signal during propagation, thereby ensuring that the interference signal received by the radar under test has the strongest energy, effectively reducing the signal-to-noise ratio of the radar under test, and significantly affecting the target detection, tracking and identification capabilities of the radar under test, and maximizing the performance test of the radar under test under strong interference.

[0013] According to another specific embodiment of the application, the test box further includes a mounting plate, the mounting plate includes a mounting surface, the second side wall of the test box is provided with a mounting hole, the mounting plate is detachably connected with the second side wall of the test box to close the mounting hole, the mounting surface of the mounting plate faces the test box, and the interference radar is fixed on the mounting surface.

[0014] According to the technical scheme, the installation hole is arranged on the second side wall of the test box, the jamming radar is fixed on the installation surface of the installation plate, the installation plate is connected with the second side wall of the test box, the installation plate closes the installation hole, and the jamming radar extends into the test box, so that the anti-jamming test of the radar to be tested in the test box is facilitated. The installation mode of the jamming radar facilitates replacement and maintenance of the jamming radar. For example, when the jamming radar needs to be replaced, the installation plate only needs to be removed from the second side wall of the test box, and then the jamming radar on the installation surface of the installation plate is replaced, without the need for an operator to enter the test box.

[0015] According to another specific embodiment of the present application, the installation plate is a wooden plate, and the installation surface is at least partially covered with flat plate wave-absorbing cotton.

[0016] According to the technical scheme, the flat plate wave-absorbing cotton can effectively absorb reflected waves, forming an ideal non-reflection space in the test box, improving test accuracy and reliability. The reflectivity of the wooden installation plate can reduce the intensity of the reflected waves, so that the anti-interference performance of the radar to be tested can be more accurately evaluated.

[0017] According to another specific embodiment of the present application, the radar anti-interference test system further comprises a control system, which is electrically connected with the radar to be tested, and is used to obtain the anti-interference performance test result of the radar to be tested according to the detection result information of the radar to be tested.

[0018] According to another specific embodiment of the present application, the radar anti-interference test system comprises a plurality of jamming radars, each of which is arranged in a different direction of the radar to be tested and at a set angle with the radar to be tested.

[0019] According to the technical scheme, the comprehensive anti-interference performance of the radar to be tested under multi-directional interference can be verified.

[0020] According to another specific embodiment of the present application, the inner wall of the test box is covered with a pyramidal wave-absorbing cotton.

[0021] According to the technical scheme, the pyramidal wave-absorbing cotton absorbs reflected waves, reduces clutter interference, provides an ideal non-reflection electromagnetic environment for testing, improves test accuracy and reliability, and ensures the accuracy of the test result. The pyramidal shape design causes electromagnetic waves to be reflected and refracted multiple times on the surface and inside of the pyramidal wave-absorbing cotton, so that the electromagnetic waves can be more effectively absorbed regardless of the angle of incidence.

[0022] According to another specific embodiment of the present application, the test box is a wooden box.

[0023] By adopting the above technical solution, the weak reflectivity of the wooden test box can reduce the intensity of the reflected wave, thereby more accurately evaluating the anti-interference performance of the radar under test. Attached Figure Description

[0024] Figure 1 This diagram shows a schematic of a radar anti-jamming test system according to an embodiment of the present invention.

[0025] Figure 2 A schematic diagram of the mounting plate of this utility model embodiment is shown. Figure 1 The mounting plate includes an interference radar.

[0026] Figure 3 A schematic diagram of the mounting plate of this utility model embodiment is shown. Figure 2 The mounting plate is equipped with two jamming radars. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0028] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0033] refer to Figure 1 This application provides a radar anti-interference testing system 100 for performing anti-interference tests on a radar (i.e., the radar under test 101 described below).

[0034] The radar anti-interference test system 100 includes: a test box 200, an interfering radar 300, a metal triangular cone 400, and a control system 500. The interfering radar 300, the metal triangular cone 400, and the radar under test 101 are all installed inside the test box 200 for anti-interference testing within the test box 200.

[0035] In this embodiment, the test chamber 200 is a wooden box, and its inner wall is covered with pyramidal absorbing cotton 600. The pyramidal absorbing cotton 600 absorbs reflected waves, reduces clutter interference, and provides a near-ideal non-reflective electromagnetic environment for testing, improving test accuracy and reliability, and ensuring the accuracy of test results. Furthermore, its pyramidal shape design causes electromagnetic waves to undergo multiple reflections and refractions on the surface and inside the pyramidal absorbing cotton 600, ensuring more effective absorption regardless of the angle from which the electromagnetic waves are incident. However, those skilled in the art will understand that in other embodiments, the absorbing material covering the inner wall of the test chamber 200 can be other types, such as flat absorbing cotton.

[0036] The wooden test chamber 200 has weaker reflectivity, which can reduce the intensity of reflected waves, thereby more accurately assessing the anti-jamming performance of the radar under test 101.

[0037] For example, the test box 200 is rectangular and has a length of 3m.

[0038] The aforementioned jamming radar 300 serves as a 76GHz-81GHz signal jamming source, used to transmit jamming signals to interfere with the detection of the radar 101 under test.

[0039] In this embodiment, the jamming radar 300 and the radar under test 101 are powered by a power supply device 800 located outside the test box 200.

[0040] In addition, the jamming radar 300 is electrically connected to the computer 700 located outside the test box 200, so that the computer 700 can control the jamming radar 300 to generate jamming signals of specific types, intensities and frequencies, such as noise jamming, deception jamming, and forwarding jamming, to simulate various interference situations in real scenarios or complex electromagnetic environments, meet different test requirements, and can precisely adjust the parameters of the jamming signal to study the anti-jamming performance of the radar 101 under different interference conditions.

[0041] The aforementioned metal triangular pyramid 400 is placed inside the test chamber 200 and located in the detection area of ​​the radar under test 101, so that the radar under test 101 can receive the strong echo signal of the metal triangular pyramid 400.

[0042] In this embodiment, the angle α between the metal triangular pyramid 400 and the radar under test 101 is 30°. However, those skilled in the art will understand that in other embodiments, the angle α between the metal triangular pyramid 400 and the radar under test 101 can be adjusted according to actual testing requirements; for example, α can also be 45°, 60°, etc.

[0043] Understandably, the metal triangular pyramid 400 is a special structural object composed of three mutually perpendicular intersecting metal planes. It can reflect incident electromagnetic waves three times within a large angular range, returning them along their original incident direction and generating a strong echo. Even though its size is not large, it has a large radar cross-section, forming a clear and stable echo signal on the screen of the radar under test 101. This facilitates testing the radar under test 101's target detection capability and anti-jamming performance under different interference conditions.

[0044] In this embodiment, the metal triangular pyramid 400 is made of aluminum. However, those skilled in the art will understand that in other embodiments, the metal triangular pyramid 400 may also be made of other metals, such as iron.

[0045] The aforementioned control system 500 is used to be electrically connected to the radar under test 101, and the control system 500 is used to obtain the anti-interference performance test results of the radar under test 101 based on the detection result information of the radar under test 101.

[0046] For example, such as Figure 1As shown, the control system 500 includes a computer 501 and a hard disk 502. The computer 501 can perform system control and parameter adjustment of the radar under test 101, such as adjusting the transmission power, pulse width, and frequency. It can also process and analyze the detection results of the radar under test 101, as well as evaluate and monitor its performance, ultimately obtaining the anti-interference performance test results of the radar under test 101. The hard disk 502 is used for data recording and storage.

[0047] Using the above technical solution, a radar under test 101, an interfering radar 300, and a metal triangular pyramid 400 are installed in the test box 200. The interfering radar 300 is used as a signal interference source, and the metal triangular pyramid 400 is used as a reference target. The metal triangular pyramid 400 is located within the detection area of ​​the radar under test 101. Thus, the detection result of the radar under test 101 on the metal triangular pyramid 400 under the signal interference of the interfering radar 300 can be obtained, and the result is fed back to the control system 500. The control system 500 obtains the anti-interference performance test result of the radar under test 101 based on the detection result information of the radar under test 101.

[0048] In summary, this application uses an interfering radar 300 as the signal interference source and a metal triangular pyramid 400 as the reference target. Compared to implementations that use a combination of a signal generator, frequency multiplier, and gain antenna as the interference source and a radar target simulator as the reference target, this embodiment has lower overall manufacturing costs. Furthermore, since the signal interference source is radar, it can be replaced at any time if damaged or otherwise problematic, eliminating the need for periodic calibration and resulting in lower equipment usage and maintenance costs. Additionally, the absence of a specialized radio frequency signal generator lowers the operational threshold.

[0049] refer to Figure 1 In some possible implementations, the jamming radar 300 and the radar under test 101 operate at the same frequency. In this case, the jamming signal emitted by the jamming radar 300 can accurately fall within the receiving frequency band of the radar under test 101, making it easier for the radar under test 101 to receive and process it. It will not be filtered out or attenuated due to frequency mismatch, thereby maximizing the jamming effect, effectively reducing the signal-to-noise ratio of the radar under test 101, and significantly affecting its target detection, tracking and identification capabilities.

[0050] In some possible implementations, the test chamber 200 includes a first sidewall 201 and a second sidewall 202 disposed opposite to each other, the first sidewall 201 being used to connect the radar under test 101 and the second sidewall 202 being used to connect the jamming radar 300.

[0051] like Figure 2 and Figure 2 As shown, where, Figure 1A schematic diagram is shown showing an interference radar 300 mounted on a mounting plate 900. The radar anti-interference test system 100 also includes a mounting plate 900, which includes a mounting surface 901; the second side wall 202 of the test chamber 200 is provided with mounting holes (not labeled in the figure), and the mounting plate 900 is detachably connected to the second side wall 202 of the test chamber 200 to close the mounting holes; the mounting surface 901 of the mounting plate 900 faces inward to the test chamber 200, and the interference radar 300 is fixed on the mounting surface 901.

[0052] In this embodiment, the jamming radar 300 is located at the center of the mounting surface 901, and four spring clips 120 are provided at the center of the mounting surface 901, which respectively fix the four corners of the jamming radar 300. However, those skilled in the art will understand that in other embodiments, the jamming radar 300 can also be fixed to the mounting surface 901 in other ways, such as screw connection.

[0053] For example, by creating mounting holes in the second sidewall 202 of the test chamber 200, and fixing the jamming radar 300 to the mounting surface 901 of the mounting plate 900, the mounting plate 900 is connected to the second sidewall 202 of the test chamber 200. This closes the mounting holes and allows the jamming radar 300 to extend into the test chamber 200, facilitating anti-interference testing of the radar 101 under test within the test chamber 200. This mounting method of the jamming radar 300 facilitates replacement and maintenance. For instance, when replacement is needed, simply remove the mounting plate 900 from the second sidewall 202 of the test chamber 200 and replace the jamming radar 300 located on the mounting surface 901 of the mounting plate 900, without requiring personnel to enter the test chamber 200.

[0054] For example, the mounting plate 900 is rectangular and has screw holes 902 at its four corners. Each screw hole 902 corresponds to a bolt. The mounting plate 900 is connected to the second side wall 202 of the test box 200 by bolts.

[0055] In some possible implementations, the mounting surface 901 is at least partially covered with flat plate absorbing cotton 110. In this embodiment, the jamming radar 300 is located at the center of the mounting surface 901, and the center of the mounting surface 901 has a central exposed area 910 to facilitate the installation of the jamming radar 300. Furthermore, to facilitate the connection of the screw holes 902 at the four corners of the mounting plate 900 to the second side wall 202 of the test chamber 200 via bolts, the mounting plate 900 has a square annular exposed area 920 near its outer edge. Apart from this square annular exposed area 920 and the central exposed area 910, the mounting surface 901 is covered with flat plate absorbing cotton 110. The flat plate absorbing cotton 110 can effectively absorb reflected waves, forming a near-ideal reflection-free space within the test chamber 200, thereby improving test accuracy and reliability.

[0056] Those skilled in the art will understand that in other embodiments, the mounting surface 901 may also be covered with cone-shaped wave-absorbing cotton.

[0057] In some possible implementations, the mounting plate 900 is a wooden board. For example, the reflectivity of the wooden mounting plate 900 can reduce the intensity of the reflected wave, thereby allowing for a more accurate assessment of the anti-jamming performance of the radar under test 101.

[0058] It should be noted that, as Figure 1 As shown, the installation method of the radar under test 101 on the first side wall 201 of the test box 200 in this embodiment is the same as the installation method of the interference radar 300 on the second side wall 202 of the test box 200 described above, and will not be repeated here.

[0059] In some possible implementations, such as Figure 1 As shown, the jamming radar 300 and the radar under test 101 are positioned facing each other. That is, the detection directions of the jamming radar 300 and the radar under test 101 are opposite, meaning the direction of the transmitted signal from the jamming radar 300 is directly opposite the direction of the received signal from the radar under test 101. In this embodiment, the radar under test 101, located on the first side wall 201, and the jamming radar 300, located on the second side wall 202, are positioned at the same height, and the jamming radar 300 and the radar under test 101 are opposite each other along the length of the test box 200, thus achieving a facing configuration. For example, the jamming radar 300 and the radar under test 101 are arranged facing each other, which allows the jamming signal emitted by the jamming radar 300 to propagate to the radar under test 101 through the most direct path, reducing the attenuation and scattering of the signal during propagation. This ensures that the jamming signal received by the radar under test 101 has the strongest energy, which can more effectively reduce the signal-to-noise ratio of the radar under test 101, and more significantly affect its ability to detect, track and identify targets, thus maximizing the testing of the performance of the radar under test 101 under strong jamming.

[0060] However, those skilled in the art will understand that in other embodiments, the jamming radar 300 may also be positioned in other directions of the radar under test 101, for example, the jamming radar 300 and the radar under test 101 may be at a set angle.

[0061] In some possible implementations, such as Figure 3 and Figure 3 As shown, the radar anti-interference test system 100 includes multiple jamming radars 300, each of which is located in a different direction from the radar under test 101 and is at a set angle to the radar under test 101, thereby verifying the comprehensive anti-interference performance of the radar under test 101 under multi-directional interference.

[0062] For example, ​Two jamming radars 300 are shown mounted on a mounting plate 900. Understandably, the mounting plate 900 is connected to the second side wall 202 of the test chamber 200, such that the two jamming radars 300 are spaced apart in the width direction of the test chamber 200 and are located at the same height as the radar under test 101. The projection of the radar under test 101 onto the second side wall 202 is located in the middle of the two jamming radars 300, that is, the two jamming radars 300 are symmetrically distributed left and right relative to the projection of the radar under test 101 onto the second side wall 202.

[0063] Those skilled in the art will understand that in other embodiments, other numbers of jamming radars 300 can be set according to actual testing needs, such as three, four, etc. Furthermore, each jamming radar 300 can also be set on a separate mounting plate 900.

[0064] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A radar countermeasure test system, comprising: The radar anti-interference test system comprises a test box, an interference radar and a metal triangular pyramid. The interference radar and the radar under test have the same working frequency. The test box comprises a first side wall and a second side wall arranged oppositely, the first side wall is used for connecting the radar under test, and the second side wall is used for connecting the interference radar. The interference radar is arranged opposite to the radar under test.

2. The radar countermeasure test system of claim 1, wherein, The test box further comprises a mounting plate, the mounting plate comprises a mounting surface, the second side wall of the test box is provided with a mounting hole, the mounting plate is detachably connected with the second side wall of the test box to close the mounting hole, the mounting surface of the mounting plate faces the test box, and the interference radar is fixed on the mounting surface.

3. The radar countermeasure test system of claim 1, wherein, The mounting plate is a wooden plate, and at least part of the mounting surface is covered with flat plate wave-absorbing cotton.

4. The radar countermeasure test system of claim 3, wherein, The radar anti-interference test system further comprises a control system, the control system is electrically connected with the radar under test, and the control system is used for obtaining the anti-interference performance test result of the radar under test according to detection result information of the radar under test.

5. The radar countermeasure test system of claim 3, wherein, The radar anti-interference test system comprises a plurality of interference radars, each of the interference radars is arranged in a different direction of the radar under test and forms a set angle with the radar under test.

6. The radar countermeasure test system of claim 5, wherein, The inner wall of the test box is covered with a triangular pyramid wave-absorbing cotton.

7. The radar countermeasure test system of claim 1, wherein, The test box is a wooden box.

8. The radar countermeasure test system of claim 1, wherein, ​ 9. The radar countermeasure test system of claim 1, wherein, ​ 10. The radar countermeasure test system of claim 1, wherein, ​

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