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RCS Reconstruction Method Based on Target Attitude Framing and Scattering Dictionary Truncation

A technology of target attitude and frame division, applied in the field of radar, can solve problems such as inability to deal with RCS reconstruction, and achieve the effect of reducing the number and difficulty

Active Publication Date: 2021-11-12
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of realizing the present invention, the inventors found that the aforementioned traditional RCS reconstruction technology has the technical problem of being unable to deal with RCS reconstruction based on non-uniform and incomplete azimuth attitude (pitch attitude) RCS data

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  • RCS Reconstruction Method Based on Target Attitude Framing and Scattering Dictionary Truncation

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combinatio...

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Abstract

This application relates to an RCS reconstruction method based on target attitude framing and scattering dictionary truncation, including: framing the RCS data corresponding to the large rotation angle to obtain the corresponding multi-frame small rotation RCS data, and performing azimuth sparseness on each single frame The one-dimensional DE model corresponding to each single frame data is obtained by modeling, and the SPICE algorithm is used to perform low-precision optimization on each one-dimensional DE model to obtain the azimuth scattering distribution area of ​​the single frame; use the azimuth scattering distribution area to analyze the corresponding The redundant dictionary matrix of the one-dimensional DE model is truncated, and the SPICE algorithm is used to optimize and solve each truncated one-dimensional DE model with high precision, and the corresponding reconstruction data of the orientation of the single frame to the RCS is obtained; the orientation of each single frame Perform frame connection processing to the RCS reconstruction data to obtain the RCS reconstruction result. Effectively realize RCS reconstruction of non-uniform and incomplete azimuth and attitude RCS data.

Description

technical field [0001] The present application relates to the field of radar technology, in particular to an RCS reconstruction method based on target attitude framing and scattering dictionary truncation. Background technique [0002] Radar cross section (RCS) is the inherent representation of radar targets in specific frequency domain, angular domain and polarization domain, which provides a data basis for the study of radar target characteristics, radar target imaging and radar target automatic recognition. At present, the methods for obtaining RCS data of radar targets mainly include electromagnetic simulation calculation, microwave anechoic chamber measurement and field measurement. RCS data has the defects of long measurement period and data redundancy. In addition, in non-cooperative scenarios, the number of echoes received by a single-station radar is limited, and most of them are unstable, incomplete, and small in azimuth, which is not conducive to radar target tra...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G06F17/16
CPCG01S7/41G06F17/16
Inventor 刘永祥李英俊田彪张文鹏张双辉霍凯张俊
Owner NAT UNIV OF DEFENSE TECH
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