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Wave-absorbing screen for target RCS measurement

A technology of target and absorbing material, applied in the field of near-Earth static RCS measurement

Pending Publication Date: 2021-05-04
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, while the metal wave-absorbing screen suppresses or blocks multipath interference signals, it will inevitably introduce diffraction fields (surface diffraction fields and edge diffraction fields) in the measured target area. The existence of the diffraction field is the RCS of the measured target. New sources of error in measurement results

Method used

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  • Wave-absorbing screen for target RCS measurement

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Embodiment Construction

[0015] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...

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Abstract

The invention belongs to the technical field of near-earth static RCS measurement, and particularly relates to a wave-absorbing screen for target RCS measurement. The wave-absorbing screen comprises a wave-absorbing screen substrate, a wave-absorbing material is arranged on the wave-absorbing screen substrate, the bottom end of the wave-absorbing screen substrate is located on the reflection ground, the top end of the wave-absorbing screen substrate inclines backwards and is supported, the front face of the wave-absorbing screen substrate faces the radar incoming wave direction, a left side face sawtooth edge is arranged on the left side of the wave-absorbing screen substrate, and a right side face sawtooth edge is arranged on the right side of the wave-absorbing screen substrate, a top sawtooth edge is arranged at the top side, the left side face sawtooth edge, the right side face sawtooth edge and the top sawtooth edge comprise a plurality of triangular sawteeth, and sawtooth tips extend away from the wave-absorbing screen substrate. According to the invention, scattering interference components introduced by diffraction of the edge of the top surface and the edges of the two side surfaces of the wave-absorbing screen can be more efficiently eliminated, the influence of the diffracted waves of the wave-absorbing screen on the measurement result is reduced or eliminated, and the precision of the RCS measurement result of the measured target in near-earth static RCS measurement is improved.

Description

technical field [0001] The application belongs to the technical field of near-earth static RCS measurement, and in particular relates to a wave-absorbing screen for target RCS measurement. Background technique [0002] With the wide application of low detectable technology in military equipment, the RCS value of radar targets is getting smaller and smaller, and the requirements for target RCS test equipment and environment are getting higher and higher, and the background clutter level has become a constraint to further improve near-earth An important factor of target RCS measurement accuracy in static RCS test field. [0003] Under near-earth measurement conditions, the signal power actually received by the receiver of the test system includes, in addition to the echo signal of the target to be tested, the coupling signal between the transmitting and receiving antennas, the internal signal leakage caused by the poor isolation of the transmitting and receiving branches, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/02
CPCG01S7/41G01S7/023Y02A90/10
Inventor 张澎高巍张磊
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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