Radar testing device
By introducing multiple degrees of freedom adjustment mechanisms into the radar test device, the precise alignment between the radar and the speaker antenna is achieved, the problem of low standardization in radar test is solved, the reliability and accuracy of the test results are improved, and the operation process is simplified.
Patent Information
- Application Number
- CN202421266234.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The current radar testing lacks systematic and standardized testing solutions, which leads to poor reliability and verifiability of test results, complex testing process and high cost, making it difficult to reproduce.
A radar testing device is provided, including a radar calibration platform, equipped with a multi-degree of freedom adjustment mechanisms for precisely adjusting the displacement and azimuth angle of the radar in three-dimensional space, aligning the radar center with the horn antenna center, ensuring standardization of each test.
Through the use of multi-degree-of-freedom adjustment mechanism, the standardization of radar tests is improved, the reliability and accuracy of test results are enhanced, the operation process is simplified, human error is reduced, and testing efficiency is improved.
Smart Images
Figure CN223217677U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of radar testing technology, and in particular to a radar testing device. Background Art
[0002] The primary challenge in current radar testing is the lack of a systematic, standardized testing plan. This forces testing activities to rely on non-standardized, temporary facilities, which not only introduces measurement uncertainty but also severely impacts the traceability and verifiability of test data. Furthermore, due to the highly specific operating parameters of radar systems (such as detection range and altitude), each project requires a customized test configuration, which exacerbates the complexity of the test process and the inconsistency of the results. Furthermore, the difficulty in reproducing test scenarios further prolongs the test cycle, resulting in a significant waste of human resources and time costs. Utility Model Content
[0003] The present application provides a radar testing device to solve the problem of low standardization and poor reliability of test results faced by current radar testing.
[0004] In a first aspect, the present application provides a radar testing device, comprising:
[0005] A radar calibration platform is used to install a radar. It includes a multi-degree-of-freedom adjustment mechanism, which is used to adjust the displacement and azimuth of the radar in three-dimensional space so that the center of the radar and the center of the horn antenna that receives its transmitted signal are aligned on the same horizontal line.
[0006] In one embodiment of the present application, the multi-degree-of-freedom adjustment mechanism includes a first adjustment platform, a second adjustment platform and a third adjustment platform; the first adjustment platform serves as the base of the radar calibration platform and is used to adjust the displacement of the radar in a first direction; the second adjustment platform is installed on the first adjustment platform and is used to adjust the displacement of the radar in a second direction; the third adjustment platform is located above the second adjustment platform and is used to adjust the height of the radar in a third direction; the first direction, the second direction and the third direction are all different.
[0007] In an embodiment of the present application, the first adjustment platform includes a first sliding track, and the second adjustment platform slides on the first sliding track to adjust the displacement of the radar in a first direction.
[0008] In one embodiment of the present application, the second adjustment platform includes a second sliding track, and the third adjustment platform slides on the second sliding track to adjust the displacement of the radar in the second direction.
[0009] In one embodiment of the present application, the third adjustment platform includes a third sliding track, and the third adjustment platform slides on the third sliding track to adjust the height of the radar in the third direction.
[0010] In one embodiment of the present application, the first direction is a horizontal direction, the second direction is another horizontal direction, and the third direction is a vertical direction. The first direction, the second direction, and the third direction are perpendicular to each other.
[0011] In one embodiment of the present application, the radar calibration platform further includes a first support frame, which is mounted on the second adjustment platform and is used to fix the third adjustment platform.
[0012] In one embodiment of the present application, the radar calibration platform also includes a second support frame, and the multi-degree-of-freedom adjustment mechanism also includes a rotating table. The second support frame is fixed to the third adjustment table, and the rotating table is installed on the second support frame. The second support frame is used to support the rotating table, and the rotating table is used to adjust the azimuth angle of the radar.
[0013] In one embodiment of the present application, the radar calibration platform further includes a radar mounting bracket, which is fixed on the rotating platform and is used to install different types of radars.
[0014] In one embodiment of the present application, the radar testing device further includes a horn antenna platform, the horn antenna platform includes a horn antenna and a horn antenna positioning frame, and the horn antenna is installed on the horn antenna positioning frame.
[0015] The radar test device provided in this application aims to address the current issues of low standardization and poor test result reliability in radar testing through a multi-degree-of-freedom adjustment mechanism integrated into a radar calibration platform. Specifically, by precisely controlling the radar's displacement and azimuth in three-dimensional space, the radar calibration platform ensures that the centers of the radar and horn antenna are precisely aligned on the same horizontal line before each test. The use of a multi-degree-of-freedom adjustment mechanism allows for fine-tuning and precise alignment of the radar, thereby improving test accuracy.
[0016] Therefore, this application improves the standardization of radar testing by providing a standardized radar calibration platform, thereby enhancing the reliability and accuracy of test results and helping to solve the problems currently faced by radar testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 is a stereoscopic diagram of a radar calibration platform provided in an embodiment of the present application;
[0019] Figure 2 is a stereoscopic diagram of a radar calibration platform after the radar is installed, as provided in an embodiment of the present application;
[0020] Figure 3 is an exploded view of the radar calibration platform provided in an embodiment of the present application;
[0021] Figure 4 Schematic diagram of the alignment of the radar and horn antenna provided in an embodiment of the present application.
[0022] Description of the figure number:
[0023] Radar test device 1, radar 2;
[0024] Radar test device 1: radar calibration platform 11, horn antenna platform 12;
[0025] Radar calibration platform 11: multi-degree-of-freedom adjustment mechanism 111, first support frame 112, second support frame 113, radar mounting bracket 114;
[0026] Multi-degree-of-freedom adjustment mechanism 111: first adjustment platform 1111, second adjustment platform 1112, third adjustment platform 1113, rotating platform 1114;
[0027] First adjustment platform 1111: first sliding track 1111-1;
[0028] Second adjustment platform 1112: second sliding track 1112-1;
[0029] The third adjustment platform 1113: the third sliding track 1113-1.
[0030] Horn antenna platform 12: horn antenna 121, horn antenna positioning frame 122. DETAILED DESCRIPTION
[0031] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.
[0032] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments described herein can be practiced in an order other than that shown or described herein.
[0033] RF radar performance testing uses radio frequency (RF) technology to evaluate and measure radar system performance. RF refers to the electromagnetic wave frequencies used in wireless communications, ranging from a few thousand hertz (kHz) to hundreds of gigahertz (GHz). Radar systems operate by transmitting RF signals and receiving the signals reflected from targets.
[0034] In order to solve the problems of low standardization and poor reliability of test results in current radar testing, the present application provides a radar testing device. By precisely controlling the displacement and azimuth of the radar in three-dimensional space, the radar calibration platform ensures that the centers of the radar and the horn antenna are precisely aligned on the same horizontal line before each test. This standardized calibration process helps to improve the consistency and repeatability of the test. The use of a multi-degree-of-freedom adjustment mechanism allows the radar to be fine-tuned and precisely aligned, thereby improving the accuracy of the test. This precise alignment reduces errors in the test and makes the test results more accurate and reliable. It simplifies the operational process of radar testing, reduces human operating errors, and improves test efficiency. Furthermore, since the precise alignment of the radar and the horn antenna can be ensured before each test, the reliability of the test results is significantly improved, which is crucial for radar performance evaluation and system optimization.
[0035] The following combination Figure 1-Figure 4 The radar test apparatus of the present application is described.
[0036] Please refer to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 , Figure 1 is a stereogram of a radar calibration platform provided in an embodiment of the present application, Figure 2 FIG1 is a perspective view of a radar calibration platform after installing a radar according to an embodiment of the present application. Figure 3is an exploded view of the radar calibration platform provided in an embodiment of the present application, Figure 4 Schematic diagram of the alignment of the radar and horn antenna provided in an embodiment of the present application.
[0037] For example, a radar test device 1 includes a radar calibration platform 11 (such as Figure 1 As shown). The radar calibration platform 11 is used to install the radar 2 (as shown). Figure 2 The radar calibration platform 11 includes a multi-degree-of-freedom adjustment mechanism 111, which is used to adjust the displacement and azimuth of the radar 2 in three-dimensional space so that the center of the radar 2 and the center of the horn antenna 121 receiving its transmitted signal are aligned on the same horizontal line (as shown). Figure 4 shown).
[0038] Specifically, the radar test device 1 includes a special component, which is a radar calibration platform 11. The main function of the radar calibration platform 11 is to install the radar 2 and ensure that the radar 2 can be accurately positioned and oriented. To achieve this, the radar calibration platform 11 is equipped with a multi-degree-of-freedom adjustment mechanism 111. The function of the multi-degree-of-freedom adjustment mechanism 111 is to allow the radar 2 to adjust its position (i.e., displacement) and direction (i.e., azimuth) in three-dimensional space. Through precise control of the multi-degree-of-freedom adjustment mechanism 111, it can be ensured that the center of the radar 2 (such as the beam center of the radar antenna) and the center of the horn antenna 121 that receives the signal transmitted by the radar 2 are precisely aligned on the same horizontal line. This alignment is important because it ensures that the signal transmitted by the radar 2 can be accurately received by the horn antenna 121, thereby ensuring the accuracy and reliability of the test. In this way, the radar test device 1 can provide a standardized calibration process, which helps to improve the performance of the RF test radar.
[0039] Specifically, the radar calibration platform 11 is used to precisely adjust the height and position of the radar 2, supplemented by a horizontal laser to ensure that the center of the radar 2 is aligned with the center of the horn antenna 121. For example, a horizontal laser is placed between the radar 1 and the horn antenna 121. The horizontal laser emits a horizontal laser line, providing a precise horizontal reference line. First, the laser line of the horizontal laser is aligned with the center of the horn antenna 121. This means that the laser line passes through the center of the opening of the horn antenna 121, forming a precise reference point. Next, the horizontal and vertical positions of the radar 2 can be adjusted by adjusting the second adjustment platform 1112 and the third adjustment platform 1113. Adjustment of the second and third adjustment platforms 1112, 1113 can be performed manually or automatically by an industrial computer. When adjusting the second and third adjustment platforms 1112, 1113, an adjustment accuracy of 1 mm can be achieved. This means that the position of the radar 2 can be adjusted with millimeter-level accuracy. By adjusting the second and third adjustment platforms 1112, 1113, the center of the radar 2 can be aligned with the laser line of the horizontal laser. In this way, the center of the radar 2 is aligned one by one with the center of the horn antenna 121 .
[0040] Exemplarily, the multi-degree-of-freedom adjustment mechanism 111 includes a first adjustment platform 1111, a second adjustment platform 1112, and a third adjustment platform 1113. The first adjustment platform 1111 serves as the base of the radar calibration platform 11 and is used to adjust the displacement of the radar 2 in a first direction. The second adjustment platform 1112 is mounted on the first adjustment platform 1111 and is used to adjust the displacement of the radar 2 in a second direction. The third adjustment platform 1113 is located above the second adjustment platform 1112 and adjusts the height of the radar 2 in a third direction. The first, second, and third directions are all different.
[0041] Specifically, the multi-degree-of-freedom adjustment mechanism 111 is used to precisely adjust the position of the radar 2 mounted thereon. Specifically, the multi-degree-of-freedom adjustment mechanism 111 can consist of three independent adjustment platforms, each responsible for adjusting the radar's displacement in a different direction. For example, the first adjustment platform 1111, serving as the base of the radar calibration platform 11, adjusts the radar's displacement in a first direction. This first direction can be horizontal, such as the X-axis. The second adjustment platform 1112, mounted above the first adjustment platform 1111, adjusts the radar's displacement in a second direction. This second direction is another horizontal direction perpendicular to the first, such as the Y-axis. The third adjustment platform 1113, located above the second adjustment platform 1112, adjusts the height of the radar 2 in a third direction. This third direction is vertical, such as the Z-axis. These three adjustment platforms work together to enable the radar's displacement to be adjusted in three mutually perpendicular directions, thereby achieving precise positioning in three-dimensional space. This design ensures that the radar 2 can be precisely calibrated so that its center is aligned with the center of the horn antenna 121 that receives signals, which is crucial for RF radar performance testing.
[0042] For example, the first adjustment platform 1111 includes a first sliding track 1111-1. The second adjustment platform 1112 slides on the first sliding track to adjust the displacement of the radar 2 in a first direction (e.g., the X-axis direction). Specifically, the first adjustment platform 1111 provides a sliding track, referred to as the first sliding track 1111-1, along which the second adjustment platform 1112 can move. By moving the second adjustment platform 1112 on the first sliding track 1111-1, the position of the radar 2 in the first direction can be adjusted, thereby achieving displacement control of the radar 2 in the horizontal plane.
[0043] Specifically, the second adjustment platform 1112 can be fixed to the first sliding track 1111-1 on the first adjustment platform 1111 via screws or other mechanical connectors, ensuring smooth sliding while maintaining sufficient stability. When the position of the radar 2 needs to be adjusted, the operator can push the second adjustment platform 1112 to move it on the first sliding track 1111-1, thereby achieving displacement of the radar 2 in the first direction.
[0044] Exemplarily, the second adjustment platform 1112 includes a second sliding track 1111-2, and the third adjustment platform 1113 slides on the second sliding track to adjust the displacement of the radar 2 in a second direction (e.g., the Y-axis direction). Specifically, the third adjustment platform 1113 is designed to be movable on the second sliding track 1111-2. By sliding the third adjustment platform 1113 on the second sliding track 1111-2, the displacement of the radar 2 in the second direction can be adjusted.
[0045] This design allows the radar 2 to be adjusted in two mutually perpendicular horizontal directions (X and Y). The first adjustment platform 1111 provides a base platform, on which the second adjustment platform 1112 can move along the X axis, while the third adjustment platform 1113 can move along the Y axis on the second adjustment platform 1112. This allows the radar 2 to be precisely positioned on the horizontal plane to ensure its precise alignment with the horn antenna 121 that receives signals.
[0046] Exemplarily, the radar calibration platform 11 further includes a first support frame 112. The first support frame 112 is mounted on the second adjustment platform 1112 and is used to secure the third adjustment platform 1113. Specifically, the first support frame 112 is a structure connected to the second adjustment platform 1112, which provides additional support and stability. The function of the first support frame 112 is to secure the third adjustment platform 1113. By securing the third adjustment platform 1113 to the first support frame, the position of the third adjustment platform 1113 on the second sliding rail 1111-2 can be ensured to be stable and prevent unnecessary movement due to external factors or operations.
[0047] This design ensures that the third adjustment platform 1113 maintains precise and reliable positioning when adjusting the displacement of the radar 2 in the second direction. The first support frame 112 can be connected to the second adjustment platform 1112 and the third adjustment platform 1113 via screws or other mechanical connectors to provide the necessary fixation and support. This structure is crucial for maintaining the stability and accuracy of the entire calibration system.
[0048] Exemplarily, the third adjustment platform 1113 includes a third sliding rail 1113-1. The third adjustment platform 1113 slides on the third sliding rail 1113-1 to adjust the height of the radar 2 in a third direction (e.g., the Z-axis direction). Specifically, the third adjustment platform 1113 is designed to be movable on the third sliding rail 1113-1. By sliding the third adjustment platform 1113 on the third sliding rail 1113-1, the height of the radar 2 in the third direction can be adjusted.
[0049] This design allows for vertical displacement adjustment of Radar 2 (Z-axis). Combined with the horizontal adjustment (X and Y axes) described above, this creates a complete three-dimensional adjustment system. This enables Radar 2 to be precisely positioned anywhere in space, ensuring precise alignment with the receiving horn antenna. This precise calibration ensures the performance of the radar test setup and the accuracy of test results.
[0050] Exemplarily, the radar calibration platform 11 further includes a second support frame 113. The multi-degree-of-freedom adjustment mechanism 111 further includes a rotating platform 1114. The second support frame 113 is fixed to the third adjustment platform 1113, and the rotating platform 1114 is mounted on the second support frame 113. The second support frame 113 is used to support the rotating platform 1114, and the rotating platform 1114 is used to adjust the azimuth angle of the radar 2.
[0051] Specifically, the second support frame 113 is a structure connected to the third adjustment platform 1113, which provides additional support and stability. The rotating platform 1114 is mounted on the second support frame 113. The rotating platform 1114 is a platform that can rotate around a vertical axis. It is mounted on the second support frame 113 so that it can rotate freely. The main function of the second support frame 113 is to support the rotating platform 1114 and ensure that the rotating platform 1114 remains stable during rotation. The rotating platform 1114 is used to adjust the azimuth of the radar 2. The azimuth is an angular measurement used to describe the rotation angle of an object in the horizontal plane relative to a reference direction (such as north). In radar systems, the azimuth is used to determine the pointing direction of the radar antenna. For example, if the radar antenna is pointing due north, the azimuth is 0 degrees; if it is pointing due east, the azimuth is 90 degrees; if it is pointing due south, the azimuth is 180 degrees; and if it is pointing due west, the azimuth is 270 degrees. By rotating the rotating platform 1114, the azimuth angle of the radar can be changed, thereby adjusting the pointing direction of the radar.
[0052] This design allows Radar 2 to rotate in the horizontal plane to adjust its pointing direction. Combined with the displacement adjustment in the three directions (e.g., X-axis, Y-axis, and Z-axis) described above, it forms a complete four-degree-of-freedom adjustment mechanism. Such a system enables Radar 2 to be accurately positioned at any position and in any direction in space to ensure its precise alignment with the horn antenna receiving the signal, which is crucial for RF testing and radar performance calibration.
[0053] It can be seen that the radar calibration platform 11 includes a first adjustment platform 1111, a second adjustment platform 1112, a third adjustment platform 1113 and a rotation platform 1114. These components together constitute a multi-degree-of-freedom adjustment mechanism 111, because it allows the radar 2 to be adjusted in at least four degrees of freedom: translation along the X-axis, Y-axis, and Z-axis, and rotation along the azimuth angle.
[0054] Specifically, bolts and nuts can be used to fasten the second support frame 113 to a specific position of the third adjustment platform 1113. This method provides a strong fixing force, and the position of the second support frame 113 can be fine-tuned by adjusting the degree of tightening of the bolts.
[0055] Exemplarily, the radar calibration platform 11 also includes a radar mounting bracket 114. The radar mounting bracket 114 is fixed on the rotating table 1114 and is used to install different types of radars 2. Specifically, the radar mounting bracket 114 is part of the radar calibration platform 11, and its main function is to provide a stable foundation for installing and fixing the radar 2. The radar mounting bracket 114 is fixed on the rotating table 1114. This means that the radar mounting bracket 114 is a structure connected to the rotating table 1114, which allows the radar 2 to be adjusted in azimuth on the rotating table 1114. The radar mounting bracket 114 is designed to be able to install different types of radars 2. This means that the radar mounting bracket 114 has a certain degree of versatility and flexibility and can adapt to radar equipment of different sizes, shapes and interfaces.
[0056] Through this design, the radar calibration platform 11 can provide an adjustable installation base for different types of radars 2, so that the radar 2 can be accurately positioned and calibrated in multiple degrees of freedom.
[0057] It should be noted that the specific method of mounting the radar 2 on the radar mounting bracket 114 may vary depending on the specific type, size, interface, and installation environment of different radars. For example, bolts and nuts may be used to align and secure the interface of the radar 2 with the corresponding interface on the radar mounting bracket 114.
[0058] In some embodiments of the present application, the radar test device 1 further includes a horn antenna platform 12, which includes a horn antenna 121 and a horn antenna positioning frame 122. The horn antenna 121 is mounted on the horn antenna positioning frame 122 (e.g., Figure 4 shown).
[0059] Specifically, the horn antenna platform 12 is part of the radar test apparatus 1 and is used to mount and position a horn antenna 121. The horn antenna platform 12 consists of two main components: the horn antenna 121 and a horn antenna positioning bracket 122. A horn antenna 121 is a specially shaped antenna typically used for transmitting and receiving radar signals. The horn antenna 121 is mounted on the horn antenna positioning bracket 122. This means that the horn antenna positioning bracket 122 is a structure used to secure the horn antenna 121, ensuring that it maintains the correct position and orientation during testing.
[0060] Through this design, the horn antenna platform 12 provides an adjustable and precisely fixed base for the horn antenna 121, which is critical to ensuring the quality of radar signal transmission and reception. The horn antenna positioning bracket 122 can include an adjustment mechanism that allows technicians to fine-tune the position and angle of the horn antenna 121 to optimize the performance of the radar system.
[0061] The radar test equipment operates based on radar technology, utilizing the reflection of radio waves to measure the range, speed, and azimuth of a target. Specifically, during product testing, the radar test equipment adjusts the radar's position to ensure the radar's transmitting antenna is precisely aligned with the horn antenna. The radar transmitter transmits radio wave signals, which are received by the precisely aligned horn antenna. The horn antenna, acting as a receiving antenna, captures the radar's transmitted signal. The received signal is fed into a spectrum analyzer. A spectrum analyzer is an instrument used to analyze the spectral characteristics of a signal, displaying its frequency distribution. The spectrum analyzer processes and analyzes the received signal, extracting various radar signal parameters such as frequency band, power, and temporal characteristics. By analyzing these parameters, it is possible to verify that the actual radar signal meets design requirements. If deviations are detected, necessary calibration can be performed to ensure that the radar's performance meets design standards. The analyzed data can be output to a display or recording system for technicians to evaluate and record.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A radar testing device, characterized in that: The radar testing device comprises: A radar calibration platform is used to install a radar. It includes a multi-degree-of-freedom adjustment mechanism, which is used to adjust the displacement and azimuth of the radar in three-dimensional space so that the center of the radar and the center of the horn antenna that receives its transmitted signal are aligned on the same horizontal line.
2. The radar testing device according to claim 1, characterized in that: The multi-degree-of-freedom adjustment mechanism includes a first adjustment platform, a second adjustment platform, and a third adjustment platform; the first adjustment platform serves as the base of the radar calibration platform and is used to adjust the displacement of the radar in a first direction; the second adjustment platform is installed on the first adjustment platform and is used to adjust the displacement of the radar in a second direction; the third adjustment platform is located above the second adjustment platform and is used to adjust the height of the radar in a third direction; the first direction, the second direction, and the third direction are all different.
3. The radar testing device according to claim 2, characterized in that: The first adjustment platform includes a first sliding track, and the second adjustment platform slides on the first sliding track to adjust the displacement of the radar in a first direction.
4. The radar testing device according to claim 2, characterized in that: The second adjustment platform includes a second sliding track, and the third adjustment platform slides on the second sliding track to adjust the displacement of the radar in the second direction.
5. The radar testing device according to claim 2, characterized in that: The third adjustment platform includes a third sliding track, and the third adjustment platform slides on the third sliding track to adjust the height of the radar in a third direction.
6. The radar testing device according to claim 2, characterized in that: The first direction is a horizontal direction, the second direction is another horizontal direction, and the third direction is a vertical direction. The first direction, the second direction, and the third direction are perpendicular to each other.
7. The radar testing device according to any one of claims 2 to 6, characterized in that: The radar calibration platform further includes a first support frame, which is mounted on the second adjustment platform and is used to fix the third adjustment platform.
8. The radar testing device according to claim 7, characterized in that: The radar calibration platform also includes a second support frame, and the multi-degree-of-freedom adjustment mechanism also includes a rotating table. The second support frame is fixed on the third adjustment table, and the rotating table is installed on the second support frame. The second support frame is used to support the rotating table, and the rotating table is used to adjust the azimuth angle of the radar.
9. The radar testing device according to claim 8, characterized in that: The radar calibration platform further includes a radar mounting bracket, which is fixed on the rotating platform and is used for mounting different types of radars.
10. The radar testing device according to claim 1, characterized in that: The radar testing device further includes a horn antenna platform, which includes a horn antenna and a horn antenna positioning frame, and the horn antenna is mounted on the horn antenna positioning frame.