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Ultralow ambient level microwave unreflected chamber used for RCS testing

A microwave anechoic chamber and background technology, used in radio wave measurement systems, instruments, etc., can solve the problems of inconsistent background environment and excessive splicing gaps of absorbing materials, and achieve small splicing gaps, good background consistency, and improved test accuracy. Effect

Active Publication Date: 2016-01-13
BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The technical solution of the present invention is to overcome the problems of excessive splicing gap of absorbing materials and inconsistent background environment caused by the use of shielding flaps in microwave anechoic chambers, and provide a microwave anechoic chamber with ultra-low background level for RCS testing

Method used

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  • Ultralow ambient level microwave unreflected chamber used for RCS testing
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  • Ultralow ambient level microwave unreflected chamber used for RCS testing

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Embodiment 1

[0031] Embodiment 1: see figure 1 , this embodiment is specifically applied to a microwave anechoic room with an ultra-low background level, including an anechoic room, a shielding shell with an opening, a shielding door installed at the opening, a feed source, a double cylinder, a foam bracket, a low Scattering support, lifting platform, hoisting mechanism, laser locator, lighting system, shielding flap for shielding the lifting platform and hoisting mechanism, and a shield installed on the inner wall of the shielding shell, the inner side of the shielding door and the surface of the flap Absorbing material.

[0032] The shielding shell is a steel structure, which is the main load-carrying structure for absorbing materials and other loads. The absorbing material is pasted on the inner surface of the shielding shell, and the diffuse reflection area and the back wall of the shielding room are covered with pyramid absorbing materials; The floor of the anechoic room, the side wa...

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Abstract

The invention belongs to the scope of low RCS ambient microwave unreflected chamber and particularly relates to an ultralow ambient level microwave unreflected chamber used for RCS testing. The microwave unreflected chamber is composed of shielding walls, a rotary table, a feed source system, metal reflecting surfaces, a support and wave-absorbing materials. The microwave unreflected chamber conducts electromagnetic shielding on a lifting platform and a hoisting mechanism through a metallic shielding cover plate, and the cylindrical support made of foamed materials is fixed to the rotary table, so that the support can just penetrate through a circular hole in the cover plate. The cover plate can be driven to be opened and closed by a motor automatically. According to the ultralow ambient level microwave unreflected chamber, a shielding overturned plate system and an electrically-controlled shielded gate system are adopted, in the opening and closing processes of the shielding overturned plate system and the electrically-controlled shielded gate system, the wave-absorbing materials do not need to be removed, the wave-absorbing materials are small in splicing gap, in the retest process, background consistency is good, it is favorable to improve testing precision, and the chamber can be widely applied to construction of low ambient level microwave unreflected chambers.

Description

technical field [0001] The invention belongs to the design category of microwave anechoic chamber with low RCS background, and specifically relates to a microwave anechoic chamber with ultra-low background level for RCS testing. The anechoic chamber has the characteristics of low background and high precision, and can realize good radar wave absorption effect, and Meet the requirements for background environment consistency during repeated RCS testing. Background technique [0002] The high-precision test requirements of high-stealth targets force the microwave anechoic chamber to pursue the quiet zone performance of ultra-low background level. At present, there are two main methods to reduce the background level in the quiet zone: one is to reduce the additional scattering of supporting equipment and facilities in the darkroom; the other is to use the background cancellation technology to contribute the background level to the value Processing is filtered out. Usually, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 黄兴军张晓钟戴全辉郑理吴亚齐
Owner BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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