A method and device for analyzing multipath clutter in a compact field

Abstract

The present invention relates to a method and device for analyzing multipath clutter in a compact range. A specific implementation of the method includes: based on a ray bouncing algorithm, a radiation source is set at a quiet zone position in a compact range, and an observation point is set at a feed position of the compact range; the radiation source is used to traverse various positions in the quiet zone, and the observation point is used to obtain various paths from the radiation source to the observation point, thereby simulating echo paths that may be generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; each echo path is simulated and analyzed, thereby determining the working path and the clutter path in the echo path. This implementation can accurately identify possible clutter paths in a darkroom of a compact range.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic characteristics technology, and in particular to a method and device for analyzing multipath clutter in a compact field. Background Art

[0002] Radar Cross Section (RCS) is an important indicator that has attracted more and more attention. At present, the mainstream RCS test sites are mainly divided into microwave compact field darkrooms and outdoor test sites. The difference between the two is that the former uses compact field technology to achieve the far-field conditions of RCS testing, and uses shielding shells and absorbing materials to ensure the purity of the test area, while the latter uses a wide test site and a clean test environment to ensure the test effect. The test area is also called the "quiet zone". The quiet zone performance is an important parameter to measure the capability of the test site and is also the core indicator of the design of the compact field reflector. Therefore, the traditional compact field darkroom design often places the radiation source at the feed position and sets the observation point at the quiet zone position to monitor the quiet zone performance. However, this analysis method is difficult to deal with clutter caused by non-main paths such as target and reflector, target and feed, that is, multipath clutter. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a method and device for analyzing multi-path clutter in a compact field, which can accurately identify possible clutter paths in a compact field darkroom.

[0004] In order to solve the above technical problems, in one aspect, an embodiment of the present invention provides a compact range multipath clutter analysis method.

[0005] The compact range multipath clutter analysis method of the embodiment of the present invention comprises: based on a ray bouncing algorithm, setting a radiation source at a quiet zone position of the compact range, and setting an observation point at a feed position of the compact range; using the radiation source to traverse various positions of the quiet zone, and using the observation point to obtain various paths from the radiation source to the observation point, thereby simulating echo paths that may be generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; and performing simulation analysis on each echo path, thereby determining the working path and the clutter path in the echo path.

[0006] Optionally, setting the radiation source at a quiet zone position in a compact field and setting the observation point at a feed position in the compact field includes: importing a compact field model, determining the feed position and the range of the quiet zone in the compact field model; and setting the radiation source and the observation point based on the feed position and the range of the quiet zone.

[0007] Optionally, traversing each position of the quiet zone by using the radiation source includes: setting simulation steps in X, Y and Z directions respectively for the range of the quiet zone, and performing the traversal according to the simulation steps.

[0008] Optionally, the method further comprises: after determining the clutter paths in the echo path, placing a blocking device on each clutter path to weaken or eliminate clutter on the clutter path.

[0009] Optionally, the barrier device is a modular, detachable wave-absorbing screen; the barrier device comprises: a multi-layer metal frame and a pointed cone-shaped wave-absorbing material adhered to both sides of each layer of the metal frame.

[0010] Optionally, the barrier device further comprises: a movable plate at the bottom; in the barrier device, adjacent metal frames are spliced ​​through dedicated interfaces, and a plurality of metal frames can reach a preset height by splicing layer by layer.

[0011] Optionally, the compact range is a reflective surface type compact range, and a main reflective surface and a sub-reflective surface are further provided in the compact range, and the echo path is reflected by the main reflective surface and the sub-reflective surface.

[0012] In order to solve the above technical problem, in another aspect, an embodiment of the present invention provides a compact range multipath clutter analysis device.

[0013] The compact range multipath clutter analysis device of the embodiment of the present invention may include: a placement unit, used to: based on a ray bouncing algorithm, set a radiation source at a quiet zone position of the compact range, and set an observation point at a feed position of the compact range; a path acquisition unit, used to: use the radiation source to traverse various positions of the quiet zone, and use the observation point to acquire various paths from the radiation source to the observation point, thereby simulating echo paths that may be generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; and a simulation unit, used to: perform simulation analysis on each echo path, thereby determining the working path and the clutter path in the echo path.

[0014] To achieve the above objective, according to another aspect of the present invention, an electronic device is provided.

[0015] An electronic device of the present invention comprises: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the compact field multipath clutter analysis method provided by the present invention.

[0016] To achieve the above objective, according to yet another aspect of the present invention, a computer-readable storage medium is provided.

[0017] A computer-readable storage medium of the present invention stores a computer program, and when the program is executed by a processor, the method for analyzing compact range multipath clutter provided by the present invention is implemented.

[0018] The implementation of the compact range multipath clutter analysis method and device of the present invention has the following beneficial effects: first, based on the ray bouncing algorithm, the radiation source is set at the quiet zone position of the compact range, and the observation point is set at the feed position of the compact range; then, the radiation source is used to traverse various positions in the quiet zone, and the observation point is used to obtain various paths from the radiation source to the observation point, thereby simulating the echo paths that may be generated by various targets in the quiet zone; finally, each echo path is simulated and analyzed to determine the working path and clutter path in the echo path. In this way, in order to solve the multipath clutter problem that may occur in the dark room of the compact range, the present invention uses the ray bouncing method to set the radiation source in the quiet zone instead of the feed position, and sets the observation point at the feed to obtain the possible path distribution that can reach the feed position, and by traversing various positions in the quiet zone space, the multipath clutter that may be generated in the entire quiet zone is obtained, and finally, a detachable absorbing screen is used for each clutter path to eliminate clutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a schematic diagram of the main steps of the compact range multipath clutter analysis method according to an embodiment of the present invention;

[0020] Figure 2 is an environmental schematic diagram of a compact range multipath clutter analysis method according to an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a barrier device according to an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of components of a compact range multipath clutter analysis device according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of an electronic device used to implement the compact range multipath clutter analysis method in an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 10: Barrier device; 11: Metal frame; 12: Conical absorbing material; 13: Movable flat plate; 14: Special interface. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Figure 1 4 is a schematic diagram of the main steps of the compact range multipath clutter analysis method according to an embodiment of the present invention.

[0028] like Figure 1 As shown, the compact range multipath clutter analysis method of the embodiment of the present invention can be specifically performed according to the following steps:

[0029] Step S101: Based on a ray bouncing algorithm, a radiation source is set at a quiet zone position of a compact range, and an observation point is set at a feed source position of the compact range.

[0030] The ray bouncing algorithm used in this step is a known algorithm in electromagnetic calculations. In an embodiment of the present invention, the compact field is a reflective surface type compact field, and a main reflective surface and a secondary reflective surface are also provided in the compact field. In this step, the radiation source and the observation point can be placed based on the algorithm, that is, the radiation source is set at the quiet zone position of the compact field, so that each position in the quiet zone space can be traversed; the observation point is set at the feed source position of the compact field, so that the multipath clutter that may be generated in the entire quiet zone can be obtained.

[0031] In practical applications, the specific execution steps to achieve the above placement are: importing a compact field model, determining the feed source position and the range of the quiet zone in the compact field model; and setting the radiation source and the observation point based on the feed source position and the range of the quiet zone.

[0032] Step S102: using the radiation source to traverse various positions in the quiet zone, and using the observation point to obtain various paths from the radiation source to the observation point, so as to simulate the echo paths that may be generated by various targets in the quiet zone.

[0033] In this step, the echo path may include a normal working path and a clutter path. In practical applications, the simulation steps in the X, Y, and Z directions (i.e., the three directions in the three-dimensional rectangular coordinate system) may be set for the range of the quiet zone, and then the traversal may be performed according to the simulation steps. Since the radiation source is set in the quiet zone and the observation point is set at the feed source position, the echo path from any position in the quiet zone to the feed source can be obtained at the observation point, thereby realizing the echo path simulation of the target in any quiet zone. It can be understood that the echo path is reflected by the main reflection surface and the secondary reflection surface.

[0034] Step S103: performing simulation analysis on each echo path, so as to determine the working path and the clutter path in the echo path.

[0035] In this step, a simulation analysis may be performed on each echo path acquired from the observation point according to known simulation techniques, thereby identifying a working path and a clutter path in the echo path.

[0036] Figure 2 FIG. 1 is an environment diagram of a compact field multipath clutter analysis method according to an embodiment of the present invention. Figure 2 As shown, multiple echo paths of the target 2 in the quiet zone enter the observation point at the position of the feed source 1, and the above echo paths pass through the main reflection surface 4 and the sub-reflection surface 3. Figure 2 Among them, only the path 2——4——3——1 shown by the solid line is a normal path, and the rest of the paths are clutter paths.

[0037] After determining the clutter path in the echo path, the focal length, size, corners and other details of the compact field should be optimized to achieve fundamental suppression of multipath clutter. On this basis, a blocking device can be placed on each clutter path to weaken or eliminate the clutter of the clutter path.

[0038] Figure 3 Schematic diagram of the structure of the barrier device according to an embodiment of the present invention. Figure 3 As shown, the blocking device 10 is a modular, detachable absorbing screen; the blocking device 10 may include: a multi-layer metal frame 11, a pointed cone-shaped absorbing material 12 pasted on both sides of each layer of the metal frame 11, and a movable flat plate 13 at the bottom; in the blocking device 10, adjacent metal frames 11 are spliced ​​through a dedicated interface 14, and multiple metal frames 11 can reach a preset height by splicing layer by layer. Through the above settings, clutter blocking can be performed according to the accurate multi-clutter path obtained to improve the compact field test effect.

[0039] A specific embodiment of the present invention is described below.

[0040] Since the RCS test requires that the electromagnetic wave irradiation meets the far-field conditions, the current mainstream RCS test sites are mainly divided into compact microwave darkrooms and outdoor test sites. In the compact darkroom, it is necessary to design a compact reflector to collimate the electromagnetic waves radiated by the feed source to meet the far-field conditions. In the design process of the compact reflector, the overall environmental electromagnetic field distribution is often analyzed with the quiet zone performance as the main indicator. However, due to the large differences in the types and sizes of the targets being measured in practice, conventional analysis methods are difficult to analyze the multipath clutter between the target and the compact reflector. Based on the fast calculation characteristics of the ray bouncing method, the present invention uses the target area as the calculation starting point for reverse analysis, solves the problem of multipath clutter analysis between the target and the reflector and the feed source in the compact darkroom, and proposes a specific suppression method.

[0041] The working principle of the reflection surface type compact field is to transform the spherical wave radiated by the feed source into a plane wave front after passing through the reflection surface. Taking the double reflection surface compact field as an example, Figure 2 As shown in the figure, the target echo in the quiet zone may produce multiple paths. Figure 2 1 is the feed source, 2 is the test target in the quiet zone, 3 is the secondary reflector, and 4 is the primary reflector. In the compact range operation, among all the paths of the target reflection echo, only 2→4→3→1 is the normal working path, and the rest are multipath clutter. In the traditional reflection surface simulation, the process of the electromagnetic wave radiated by the feed source to the quiet zone is generally calculated. The design effect of the compact range is determined by analyzing the quiet zone performance, and there is a lack of simulation analysis of the transmission path.

[0042] In this embodiment, firstly, based on the ray bouncing algorithm, the radiation source is set at the quiet zone position, and the observation point is set at the feed source position.

[0043] In actual compact field darkroom testing, the size of the test target is limited by the size of the quiet zone. However, due to the wide variety of targets, the reflection conditions of the incident wave at various azimuths or attitude angles are different, and it is more difficult to simulate the complete radiation and reflection process of the electromagnetic wave. Change the idea to transform the reflection process into a simple radiation process. In the compact field reflection surface model that has been determined, the radiation source (i.e., the initial position of the ray) is set in the quiet zone, and the observation point (i.e., the end point of the ray) is set at the feed source position ( Figure 2 1 in the figure). In this way, it can be calculated whether all the rays radiated at a certain position can enter the feed source position through irradiation and reflection. It can simulate whether new multipath clutter will be introduced in addition to the effective main path when the target is in the quiet zone and transmits the incident wave.

[0044] Then, the radiation source traverses each position in the quiet zone to simulate all possible echo paths generated during different target tests, thereby realizing simulation analysis of the entire path.

[0045] In order to simulate the reflection wave conditions of various targets, within the solution framework of the present invention, it is necessary to simulate and traverse all the paths that the observation point may receive at the feed position when the radiation source is at various positions in the quiet zone. The simulation analysis target, scale range, and step accuracy can be set in turn to obtain multipath results that meet the requirements.

[0046] Afterwards, the multipath clutter between the target and the compact field is blocked by a detachable screen (i.e., a blocking device) covered with absorbing cone material, thereby achieving the purpose of weakening or eliminating the multipath clutter.

[0047] When multipath clutter is found in a compact field, the focal length, size, corners and other details of the compact field should be optimized first to achieve fundamental suppression of multipath clutter. In actual engineering, for compact field facilities that have been processed, shielding and blocking can be used to block the path that generates clutter.

[0048] Each layer of the barrier device is made of a pointed cone-shaped absorbing material pasted on both sides of the metal frame. Each layer of the metal frame is equipped with an interface, which can be spliced ​​layer by layer to the desired height. A movable flat plate is installed on the bottom layer, and the entire screen can be flexibly moved. Placing the screen perpendicular to the clutter path can effectively suppress the clutter on the path.

[0049] In summary, in the technical solution of the embodiment of the present invention, an analysis method that can be used to study the multipath clutter of a compact range in a compact range microwave darkroom is proposed, and an easy-to-implement clutter suppression device (i.e., a blocking device) is designed, which can realize effective analysis and suppression of multipath clutter in a compact range, thereby providing conditions for high-precision RCS testing.

[0050] It should be noted that, for the convenience of description, the aforementioned method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the present invention is not limited by the described action sequence, and some steps can actually be performed in other sequences or simultaneously. In addition, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily necessary to implement the present invention.

[0051] In order to better implement the above-mentioned solution of the embodiment of the present invention, relevant devices for implementing the above-mentioned solution are also provided below.

[0052] See also Figure 4 As shown, the compact range multipath clutter analysis device 400 provided in the embodiment of the present invention may include: a placement unit 401 , a path acquisition unit 402 and a simulation unit 403 .

[0053] The arrangement unit 401 may be used to: arrange the radiation source at the quiet zone position of the compact range based on the ray bouncing algorithm, and arrange the observation point at the feed position of the compact range; the path acquisition unit 402 may be used to: use the radiation source to traverse various positions of the quiet zone, and use the observation point to acquire various paths from the radiation source to the observation point, thereby simulating echo paths that may be generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; and the simulation unit 403 may be used to: perform simulation analysis on each echo path, thereby determining the working path and the clutter path in the echo path.

[0054] In an embodiment of the present invention, the arrangement unit 401 may be further used to: import a compact range model, determine the feed source position and the range of the quiet zone in the compact range model; and set the radiation source and the observation point based on the feed source position and the range of the quiet zone.

[0055] As a preferred solution, the path acquisition unit 402 may be further configured to: respectively set simulation steps in the X, Y, and Z directions for the range of the quiet zone, and perform the traversal according to the simulation steps.

[0056] Preferably, the device may further include: a clutter suppression unit, which is used to: after determining the clutter path in the echo path, place a blocking device on each clutter path to weaken or eliminate the clutter of the clutter path.

[0057] In addition, in the embodiment of the present invention, the compact range is a reflective surface type compact range, and a main reflective surface and a sub-reflective surface are further provided in the compact range, and the echo path is reflected by the main reflective surface and the sub-reflective surface.

[0058] In the technical solution of the embodiment of the present invention, in order to solve the problem of multipath clutter that may occur in the compact field darkroom, the radiation source is set in the quiet zone instead of the feed source position by using the ray bouncing method, and the observation point is set at the feed source to obtain the possible path distribution that can reach the feed source position, and by traversing each position in the quiet zone space, the multipath clutter that may be generated in the entire quiet zone is obtained, and finally a detachable absorbing screen is used to eliminate clutter for each clutter path.

[0059] The present invention also provides an electronic device. The electronic device of an embodiment of the present invention comprises: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the compact field multipath clutter analysis method provided by the present invention.

[0060] Reference below Figure 5 , which shows a schematic diagram of the structure of a computer system 500 of an electronic device suitable for implementing an embodiment of the present invention. Figure 5 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0061] like Figure 5 As shown, the computer system 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage part 508 into a random access memory (RAM) 503. In the RAM 503, various programs and data required for the operation of the computer system 500 are also stored. The CPU 501, the ROM 502, and the RAM 503 are connected to each other via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0062] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0063] In particular, according to the embodiments disclosed in the present invention, the process described in the main step diagram above can be implemented as a computer software program. For example, the embodiments of the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the main step diagram. In the above embodiment, the computer program can be downloaded and installed from the network through the communication part 509, and / or installed from the removable medium 511. When the computer program is executed by the central processing unit 501, the above functions defined in the system of the present invention are executed.

[0064] It should be noted that the computer-readable medium shown in the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer readable signal media may also be any computer readable medium other than computer readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0065] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0066] The units involved in the embodiments of the present invention may be implemented by software or hardware. The units described may also be arranged in a processor, for example, may be described as: a processor includes a layout unit, a path acquisition unit and a simulation unit. The names of these units do not constitute limitations on the units themselves in certain circumstances, for example, the path acquisition unit may also be described as a "unit that provides an echo path to a simulation unit".

[0067] As another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiment; or it may exist independently and not be assembled into the device. The above computer-readable medium carries one or more programs, and when the above one or more programs are executed by the device, the steps executed by the device include: based on the ray bouncing algorithm, setting the radiation source at the quiet zone position of the compact field, and setting the observation point at the feed position of the compact field; using the radiation source to traverse various positions of the quiet zone, and using the observation point to obtain various paths from the radiation source to the observation point, so as to simulate the echo paths that may be generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; each echo path is simulated and analyzed to determine the working path and the clutter path in the echo path.

[0068] In the technical solution of the embodiment of the present invention, an analysis method is proposed for studying multipath clutter in a compact range in a compact range microwave darkroom, and an easy-to-implement clutter suppression device (i.e., a blocking device) is designed, which can realize effective analysis and suppression of multipath clutter in a compact range, thereby providing conditions for high-precision RCS testing.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 invention.

Claims

1. A method for analyzing multipath clutter in a compact range, characterized in that: include: Based on the ray bouncing algorithm, the radiation source is set at the quiet zone position of the compact field, and the observation point is set at the feed position of the compact field; Using the radiation source to traverse various positions in the quiet zone, using the observation point to obtain various paths from the radiation source to the observation point, thereby simulating the echo paths generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; A simulation analysis is performed on each echo path to determine a working path and a clutter path in the echo path.

2. The method according to claim 1, characterized in that: The step of setting the radiation source at a quiet zone of the compact range and setting the observation point at a feed source position of the compact range comprises: Importing a compact range model, and determining the feed source position and the range of the quiet zone in the compact range model; The radiation source and the observation point are set based on the feed source position and the range of the quiet zone.

3. The method according to claim 1, characterized in that The step of traversing each position of the quiet zone using the radiation source includes: Simulation steps in the X, Y and Z directions are respectively set for the range of the quiet zone, and the traversal is performed according to the simulation steps.

4. The method according to claim 1, characterized in that: The method further comprises: After the clutter paths in the echo paths are determined, a blocking device is placed on each clutter path to weaken or eliminate the clutter of the clutter path.

5. The method according to claim 4, characterized in that The blocking device is a modular, detachable wave-absorbing screen; The blocking device comprises: a multi-layer metal frame and a pointed cone-shaped wave-absorbing material pasted on both sides of each layer of the metal frame.

6. The method according to claim 5, characterized in that The barrier device further comprises: a movable plate at the bottom; In the barrier device, adjacent metal frames are spliced ​​through interfaces, and multiple metal frames are spliced ​​layer by layer to reach a preset height.

7. The method according to claim 1, characterized in that The compact range is a reflective surface type compact range, in which a main reflective surface and a sub-reflective surface are further provided, and the echo path is reflected by the main reflective surface and the sub-reflective surface.

8. A compact range multipath clutter analysis device, characterized in that: include: The arrangement unit is used to: arrange the radiation source at the quiet zone position of the compact range based on the ray bouncing algorithm, and arrange the observation point at the feed position of the compact range; A path acquisition unit, used to: use the radiation source to traverse various positions in the quiet zone, and use the observation point to acquire various paths from the radiation source to the observation point, so as to simulate the echo path generated by various targets in the quiet zone; wherein the echo path includes a working path and a clutter path; The simulation unit is used to: perform simulation analysis on each echo path, so as to determine the working path and the clutter path in the echo path.

9. An electronic device, characterized in that: include: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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