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Target scattering characteristic data mode conversion method and device based on transfer matrix

A technology for target scattering and characteristic data, applied in radio wave measurement systems, instruments, etc., can solve the problem that the target scattering characteristic data cannot be directly compared or fused

Pending Publication Date: 2022-02-18
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the target scattering characteristic data obtained by different scanning mode tests cannot be directly compared or fused. In view of the defects in the prior art, based on the principle of invariant scattering distribution function, a target based on transfer matrix is ​​provided. Scattering characteristic data mode conversion method and device, realize the data conversion method between different near-field measurement modes, and solve the problems of evaluation, comparison and processing of target scattering characteristic data obtained under different near-field test modes in actual engineering tests

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  • Target scattering characteristic data mode conversion method and device based on transfer matrix
  • Target scattering characteristic data mode conversion method and device based on transfer matrix
  • Target scattering characteristic data mode conversion method and device based on transfer matrix

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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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 It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] Such as figure 1 As shown, the transfer matrix-based target scattering characteristic data mode conversion method provided by the embodiment of the present invention includes the following steps; Step S01: Carry out grid processing on the target area; Step S02: Construct the observation matrix of the first near-field test mode A 1 , ...

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Abstract

The invention relates to a target scattering characteristic data mode conversion method and device based on a transfer matrix. The method comprises the following steps: carrying out gridding processing on a target area; constructing an observation matrix A1 of the first near-field test mode, constructing an observation matrix A2 of the second near-field test mode, and constructing a transfer matrix A based on the observation matrix A1 and the observation matrix A2; and mapping the target scattering characteristic data of the first near-field test mode to the target scattering characteristic data of the second near-field test mode through the transfer matrix A. According to the method, a scattering characteristic data mapping relation of the same target in different near-field measurement modes is established by means of a transfer matrix concept, so that evaluation and fusion processing of test data in different near-field measurement modes are realized.

Description

technical field [0001] The invention relates to the technical field of RCS testing and data processing, in particular to a conversion method and device for data in different measurement modes under near-field conditions. Background technique [0002] The definition of target RCS (radar cross section) is a far-field concept, which requires both the incident wave irradiating the target and the scattered wave reaching the receiving antenna to be plane waves. But a truly ideal plane wave does not exist. At present, in engineering, the RCS test in the outdoor field generally adopts the far-field method, that is, the distance between the target and the measurement system is far enough, and the incident wave and scattered wave are approximately plane waves; indoors, parabolic reflectors and other equipment are used. , within a certain area, the spherical wave radiated by the feed is converted into a plane wave. When the test conditions are limited and the approximate plane wave c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/418
Inventor 吕鸣
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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