Method for calculating total scattered fields of metal bracket with small radar cross section (RCS)

Abstract

The invention provides a method for calculating total scattered fields of a metal bracket with a small radar cross section (RCS). The method comprises the steps of: calculating to obtain a first total scattered field of a metal end cap; calculating to obtain a second total scattered field of a combination body, wherein the combination body comprises the metal bracket and the metal end cap which is mounted at the top end of the metal bracket; and calculating according to the first total scattered field and the second total scattered field to obtain a third total scattered field of the metal bracket. According to the method for calculating the total scattered fields of the metal bracket with the small radar cross section, provided by the invention, the low scattering metal end cap with reasonable shape design is additionally mounted at the top end of the metal bracket, the scattered field of the metal end cap is filtered from the scattered field of the metal bracket and an end cap combination body to obtain the scattered fields of the metal bracket, and the obtained scattered fields of the metal bracket reflect the scattered fields of the metal bracket in a real target measurement state when a target is mounted at the top end of the bracket in a simulating manner, and provide guarantee for accurate measurement of RCS of an ultimate target.

Description

technical field [0001] The invention relates to communication technology, in particular to a method for calculating the total scattering field of a metal bracket with a low radar scattering cross section. Background technique [0002] In the design, development and test process of modern stealth targets, it is often necessary to carry out diagnostic measurement and evaluation of the designed target radar cross-section (Radar Cross-Section, hereinafter referred to as RCS) value, that is, the total scattering field, in order to improve the design and Stealth performance evaluation provides a reference. Among them, the measurement of the total scattered field of scaled targets and full-scale targets is one of the important means for RCS testing, improvement and performance evaluation of low-observable targets. The total scattered field is one of the properties of the object itself. In the RCS test, it is necessary to set up a metal bracket, which is used to support the target...

AI Technical Summary

Problems solved by technology

[0009] There are at least the following problems in the prior art: In the above two calculation methods, the impact on the background level of the support when the target is installed on the top of the support under real measurement conditions is not considered, and the total scattered field calculated by the above two methods is not accurate enough

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