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

Luo Ying | Zendy; Qun Zhang | Zendy; Guozheng Wang | Zendy; Hua Guan | Zendy; Bai You-qing | Zendy

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

Author(s) -

Luo Ying,

Qun Zhang,

Guozheng Wang,

Hua Guan,

Bai You-qing

Publication year - 2012

Publication title -

journal of radars

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.301

H-Index - 13

ISSN - 2095-283X

DOI - 10.3724/sp.j.1300.2012.20065

Subject(s) - signature (topology) , artificial intelligence , radar , computer science , pattern recognition (psychology) , radar imaging , computer vision , geology , remote sensing , mathematics , telecommunications , geometry

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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