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High-Resolution Sparse Representation of Micro-Doppler Signal in Sparse Fractional Domain

  • Xiaolong Chen
  • Xiaohan Yu
  • Jian Guan
  • You He
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 227)

Abstract

In order to effectively improve radar detection ability of moving target under the conditions of strong clutter and complex motion characteristics, the principle framework of Short-Time sparse Time-Frequency Distribution (ST-TFD) is established combing the advantages of TFD and sparse representation. Then, Short-Time Sparse FRactional Ambiguity Function (ST-SFRAF) method is proposed and applied to radar micro-Doppler (m-D) detection and extraction. It is verified by real radar data that the proposed methods can achieve high-resolution and low complexity TFD of time-varying signal in time-sparse domain, and has the advantages of good time-frequency resolution, anti-clutter, and so on. It can be expected that the proposed methods can provide a novel solution for time-varying signal analysis and radar moving target detection.

Keywords

Sparse representation Micro-Doppler signal Sparse time-frequency distribution (STFD) Short-time sparse fractional ambiguity function (ST-SFRAF) 

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018

Authors and Affiliations

  1. 1.Naval Aeronautical UniversityYantaiPeople’s Republic of China

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