A shape modification method for metal stent rcs estimation
A metal bracket and shape technology, applied in the field of electromagnetic scattering measurement, can solve problems such as affecting the RCS simulation accuracy of the bracket, achieve good economic and social benefits, reduce additional scattering, and improve simulation accuracy.
Active Publication Date: 2018-11-06
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology
This brings difficulties to the RCS estimation of the bracket. If the 5m section of the bracket is directly intercepted for simulation calculation, there will be a truncation effect at the bottom of the 5m bracket, which will affect the RCS simulation accuracy of the bracket
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.
[0026] The inventor of the present invention considers that during the RCS (Radar Cross Section) test in the external field, the radar wave can only irradiate the upper half of the metal support (about 5m height). This brings difficulties to the RCS estimation of the bracket. If the 5m section of the bracket is directly intercepted for simulation calculation, there will be a truncation effect at the bottom of the 5m bracket, which will affect the RCS simulation ac...
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The invention discloses a shape modification method used for metal support RCS estimation. The method is used for carrying out shape modification on a cross section so as to reduce scattering caused by a truncation effect when an illumination area portion of a metal support is intercepted to carry out RCS estimation during an external field RCS test. The method is characterized by aiming at two polarization modes of VV and HH, carrying out shape modification; aiming at VV polarization, constructing that a forward transition curved surface is connected to a front chopping blade of the metal support and the cross section in a smooth mode respectively and constructing that a backward transition curved surface is connected to a rear chopping blade of the metal support and the cross section in a smooth mode respectively; and aiming at HH polarization, extending a backward end point of the cross section for a preset distance along a backward direction, taking the extended point as the backward end point and constructing a new cross section, and taking the new cross section as an interception surface and constructing a shape of an interception portion of the metal support. In the invention, a condition that estimation precision of a component RCS is influenced by extra scattering brought by truncation of a support bottom can be avoided.
Description
technical field [0001] The invention relates to the field of electromagnetic scattering measurement, in particular to a shape modification method for metal bracket RCS estimation Background technique [0002] The low-scattering metal bracket is the necessary supporting equipment for the RCS test site, and it is mainly used to install the two-dimensional rotating top and the target to be tested and bear all the loads. The outer surface of the metal bracket is a smooth oval surface with a small reflection function. The low-scattering metal support in the external field is as high as 10-30m. During the actual RCS test, the radar wave can only irradiate the upper half of the support (about 5m height). This brings difficulties to the RCS estimation of the bracket. If the 5m section of the bracket is directly intercepted for simulation calculation, there will be a truncation effect at the bottom of the 5m bracket, which will affect the RCS simulation accuracy of the bracket. [...
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IPC IPC(8): G01R3/00G01R29/08
CPCG01R3/00G01R29/08
Inventor 戚开南汪勇峰袁晓峰
Owner BEIJING INST OF ENVIRONMENTAL FEATURES