A pendulum-type radar moving target signal simulation device

Abstract

This utility model discloses a single-pendulum type radar moving target signal simulation device, which includes a base, a support body, a pendulum body, and a corner reflector. The support body is fixedly connected to the base, and the pendulum body is movably connected to the support body. The pendulum body swings on the support body with the connection point as the fulcrum. The corner reflector is fixedly connected to the pendulum body and is used to reflect the radar incident wave to simulate the target signal. The device uses a simple structure to simulate the moving target signal without the need for complex mechanical mechanisms or electronic equipment.

Description

Technical Field

[0001] This utility model relates to the field of radar simulation technology, and in particular to a pendulum-type radar moving target signal simulation device. Background Technology

[0002] In the research and testing of radar systems, especially in test environments with some static target reflections, it is necessary to simulate reflected signals with distinct moving target characteristics. This allows the moving target signal to be separated from the static background signal, thus verifying the radar's performance. Traditional methods for simulating moving target signals typically employ mechanical motion platforms or electronic signal generators, but these methods are costly and complex. Therefore, a simple, low-cost device capable of stably simulating moving target signals over extended periods is needed.

[0003] Moving target simulators based on mechanical motion platforms have complex and costly mechanical motion mechanisms. Furthermore, the irregular radar reflection waves generated by these mechanisms during operation can cause interference and affect the evaluation of radar performance.

[0004] Electronic signal generators, such as Doppler radar echo generators, have complex circuits and structures. They typically consist of radar receiving components, radar frequency signal generation circuits, mixing circuits, radio frequency transmitting circuits, system control circuits, power supply circuits, and receiving and transmitting antennas. The entire system relies on radio frequency circuits or components, making implementation technically challenging and costly. Utility Model Content

[0005] The purpose of this invention is to address the technical problems existing in the background technology by proposing a pendulum-type radar moving target signal simulation device.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A single-pendulum radar moving target signal simulation device includes a base, a support body, a pendulum body, and a corner reflector. The support body is fixedly connected to the base, and the pendulum body is movably connected to the support body. The pendulum body swings on the support body with the connection point as the fulcrum. The corner reflector is fixedly connected to the pendulum body and is used to reflect radar incident waves to simulate target signals.

[0008] Preferably, the corner reflector includes three planar plates, which are right-angled triangles. The corner reflector is formed by splicing the three planar plates perpendicularly to each other to form a triangular pyramid structure with one side open.

[0009] Preferably, the planar plate is made of a metallic conductor material.

[0010] Preferably, the pendulum body includes a connecting member and a pendulum. The connecting member is fixedly connected to a flat plate and positioned away from the corner reflector opening. The connecting member is movably connected to a support body. The first end of the pendulum is fixedly connected to the connecting member, and the second end of the pendulum extends away from the connecting member.

[0011] Preferably, the connecting component includes a first connecting block and a second connecting block arranged orthogonally. The first connecting block is fixedly connected to the flat plate, and the second connecting block is orthogonally arranged on the first connecting block. The two ends of the second connecting block are respectively movably connected to the support body.

[0012] Preferably, the first end of the pendulum is fixedly connected to the orthogonal point of the first connecting block and the second connecting block, and the vertical falling direction of the pendulum is at a 45-degree angle to the corresponding connected planar plate.

[0013] Preferably, the support body includes a main rod and two branch rods, and the support body is composed of a main rod and two branch rods to form a Y-shaped fork structure.

[0014] Preferably, the end face of the branch rod is flat, and support feet are provided on both ends of the second connecting block, with the ends of the support feet abutting against the end face of the branch rod.

[0015] Preferably, the support foot has a pointed cylindrical structure.

[0016] Preferably, the first end of the pendulum is threaded into the orthogonal point of the first connecting block and the second connecting block.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects: it includes a base, a support body, a swinging body, and a corner reflector. The support body is fixedly connected to the base, and the swinging body is movably connected to the support body. The swinging body swings on the support body with the connection point as the fulcrum. The corner reflector is fixedly connected to the swinging body. The corner reflector is used to reflect radar incident waves to simulate target signals. It realizes the simulation of moving target signals with a simple structure, without the need for complex mechanical mechanisms or electronic equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 3 ;

[0021] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0022] Icon labels:

[0023] 100 bases;

[0024] 200 Support body, 201 Main rod, 202 Branch rod;

[0025] 300 pendulum body, 301 connecting component, 3011 first connecting block, 3012 second connecting block, 30121 supporting foot, 302 pendulum;

[0026] 400-degree angle reflector, 401 flat panel. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or assembly referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a link, or a specific 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 connection within two groups. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-4As shown, this utility model proposes a single-pendulum radar moving target signal simulation device, which includes a base 100, a support body 200, a pendulum body 300, and a corner reflector 400. The support body 200 is fixedly connected to the base 100, and the pendulum body 300 is movably connected to the support body 200. With the connection point as the fulcrum, the pendulum body 300 swings on the support body 200. The corner reflector 400 is fixedly connected to the pendulum body 300 and is used to reflect radar incident waves to simulate target signals.

[0032] In this embodiment, the base 100 and the support body 200 serve as the main support body. The pendulum body 300 is mounted on the main support body and swings on the support body 200 with the connection point as the fulcrum. The swing amplitude and frequency depend on the initial force on the pendulum body 300. Of course, an external driving device can also be provided. The driving device is connected to the pendulum body 300 to drive the pendulum body 300 to swing automatically.

[0033] The corner reflector 400 is fixed on the deflector body 300 and swings with the deflector body 300. The corner reflector 400 is used to reflect the radar incident wave to form a radar target echo signal, thereby simulating the target signal and serving as a moving target signal under the swing.

[0034] Furthermore, the corner reflector 400 includes three planar plates 401, which are right-angled triangles. The corner reflector 400 is formed by splicing the three planar plates 401 perpendicularly to each other to form a triangular pyramid structure with an opening on one side.

[0035] The planar plate 401 is made of metallic conductor material.

[0036] Specifically, the corner reflector 400 is a triangular pyramid structure with an opening on one side. The opening side is used to receive and reflect radar incident waves. The three planar plates 401 all adopt right-angled triangular structures and are formed into triangular pyramid structures by welding, snap-fitting, or bending splicing. When the radar electromagnetic wave scans the corner reflection, the electromagnetic wave will be refracted and amplified at the metal corner, generating a strong echo signal and a strong echo target appearing on the radar screen. Therefore, in this embodiment, the corner reflector 400 is combined with the deflector 300. Under the deflection of the deflector 300, the corner reflector 400 also deflects accordingly to obtain a dynamic echo target.

[0037] Furthermore, the pendulum body 300 includes a connecting member 301 and a pendulum 302. The connecting member 301 is fixedly connected to a flat plate 401 and is positioned away from the opening of the corner reflector 400. The connecting member 301 is movably connected to the support body 200. The first end of the pendulum 302 is fixedly connected to the connecting member 301, and the second end of the pendulum 302 extends away from the connecting member 301.

[0038] Specifically, the pendulum 302 is a straight rod and a heavy hammer connected to the end of the straight rod. With the connection between the connecting member 301 and the support body 200, the initial placement state of the pendulum 302 is perpendicular to the ground. When an external force is applied to the pendulum 302, the pendulum 302 uses the connection between the connecting member 301 and the support body 200 as the fulcrum and performs a periodic oscillating motion. At this time, the corner reflector 400 swings periodically, and the Doppler frequency shift of the reflected signal changes with time, thereby generating a moving target signal at the radar intermediate frequency sampling point.

[0039] Furthermore, the connecting member 301 includes a first connecting block 3011 and a second connecting block 3012 arranged orthogonally. The first connecting block 3011 is fixedly connected to the flat plate 401, and the second connecting block 3012 is orthogonally arranged on the first connecting block 3011. The two ends of the second connecting block 3012 are respectively movably connected to the support body 200.

[0040] The first end of the pendulum 302 is fixedly connected to the intersection of the first connecting block 3011 and the second connecting block 3012. The vertical falling direction of the pendulum 302 is at a 45-degree angle to the corresponding connected planar plate 401.

[0041] Furthermore, the support body 200 includes a main rod 201 and two branch rods 202. The support body 200 is composed of the main rod 201 and the two branch rods 202 to form a Y-shaped fork structure.

[0042] The end face of the branch rod 202 is flat, and the two ends of the second connecting block 3012 are provided with support feet 30121, the ends of the support feet 30121 abutting against the end face of the branch rod 202.

[0043] The support foot 30121 has a pointed cylindrical structure.

[0044] Specifically, the two ends of the second connecting block 3012 abut against the end face of the corresponding branch rod 202 through the support foot 30121, so that the pendulum 302 is placed between the two branch rods 202 to form a pendulum structure. At this time, the fulcrum of the pendulum 302 is at the contact point between the support foot 30121 and the end face of the branch rod 202. Its contact surface is the smallest, the friction is the smallest, and the energy loss can be minimized to the greatest extent and the pendulum swing time can be extended as much as possible.

[0045] The pendulum 302 has a cylindrical rigid rod structure, which reduces air resistance during swinging and maximizes the swing time. Furthermore, the pendulum 302 has a very small RCS value in the radial direction, preventing its reflected echo signal from interfering with the effective echo signal generated by the corner reflector 400.

[0046] Furthermore, the first end of the pendulum 302 is threadedly engaged with the intersection of the first connecting block 3011 and the second connecting block 3012.

[0047] Specifically, the first end of the pendulum 302 is provided with a threaded post, and the first connecting block 3011 and the second connecting block 3012 are respectively provided with threaded holes with a certain depth. It can be understood that the pendulum 302 can adjust the length of its rod placed outside by threaded engagement, thereby changing the swing period and simulating dynamic targets at different speeds.

[0048] The above description provides one or more embodiments in conjunction with specific content, but it is not intended that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A single-pendulum type radar moving target signal simulation device, characterized in that, include: Base (100); The support body (200) is fixedly connected to the base (100); A pendulum body (300) is movably connected to the support body (200), wherein the pendulum body (300) swings on the support body (200) with the connection point as the fulcrum; A corner reflector (400) is fixedly connected to the deflector (300) and is used to reflect radar incident waves to simulate target signals.

2. The single-pendulum type radar moving target signal simulation device according to claim 1, characterized in that, The corner reflector (400) includes three planar plates (401), each planar plate (401) being a right triangle. The corner reflector (400) is formed by the three planar plates (401) being joined perpendicularly to each other to form a triangular pyramid structure with an opening on one side.

3. The single-pendulum type radar moving target signal simulation device according to claim 2, characterized in that, The planar plate (401) is made of a metallic conductor material.

4. A single-pendulum type radar moving target signal simulation device according to claim 2, characterized in that, The pendulum body (300) includes a connecting member (301) and a pendulum (302). The connecting member (301) is fixedly connected to one of the flat plates (401) and positioned away from the opening of the corner reflector (400). The connecting member (301) is movably connected to the support body (200). The first end of the pendulum (302) is connected to the connecting member (301), and the second end of the pendulum (302) extends away from the connecting member (301).

5. A single-pendulum type radar moving target signal simulation device according to claim 4, characterized in that, The connecting member (301) includes a first connecting block (3011) and a second connecting block (3012) arranged orthogonally. The first connecting block (3011) is fixedly connected to the flat plate (401), and the second connecting block (3012) is orthogonally arranged on the first connecting block (3011). The two ends of the second connecting block (3012) are respectively movably connected to the support (200).

6. A single-pendulum type radar moving target signal simulation device according to claim 5, characterized in that, The first end of the pendulum (302) is connected to the orthogonal point of the first connecting block (3011) and the second connecting block (3012), and the vertical falling direction of the pendulum (302) is at a 45-degree angle to the corresponding connected flat plate (401).

7. A single-pendulum type radar moving target signal simulation device according to claim 5, characterized in that, The support (200) includes a main rod (201) and two branch rods (202), and the support (200) is composed of the main rod (201) and the two branch rods (202) to form a Y-shaped fork structure.

8. A single-pendulum type radar moving target signal simulation device according to claim 7, characterized in that, The end face of the branch rod (202) is flat, and the second connecting block (3012) is provided with support feet (30121) at both ends, with the ends of the support feet (30121) abutting against the end face of the branch rod (202).

9. A single-pendulum type radar moving target signal simulation device according to claim 8, characterized in that, The support foot (30121) has a pointed cylindrical structure.

10. A single-pendulum type radar moving target signal simulation device according to claim 6, characterized in that, The first end of the pendulum (302) is threaded into the orthogonal point of the first connecting block (3011) and the second connecting block (3012).

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