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      Micro-motion Signature Extraction Method for Wideband Radar Based on Complex Image OMP Decomposition

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          Abstract

          In order to extract the micro-motion signatures in condition of Migration Through Range Cells (MTRC) of micro-motional scatterers and azimuthal undersampling in wideband radar, a method based on the Orthogonal Matching Pursuit (OMP) decomposition of the complex image is proposed. By making use of the amplitude and phase information of “range-slow-time image”, a set of micro-Doppler signal atoms is constructed in the complex image space. The OMP algorithm in vector space is then extend to the complex image space to obtain the micro-motion parameters. Simulations demonstrate the proposed method can extract the micro-motion signatures when MTRC of micro-motional scatterers is occurred, and can also work well when the sampling rate is lower than the Nyquist sampling rate.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 December 2012
          : 1
          : 4
          : 361-369
          Affiliations
          [1 ] Institute of Information and Navigation, Air Force Engineering University
          Article
          bd85833988f6485fa98aa1a577844a0f
          10.3724/SP.J.1300.2012.20065

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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