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

Leida xuebao

Wang Guo-zheng¹  Bai You-qing¹  Zhang Qun¹  Luo Ying¹  Guan Hua¹ 

[1] Institute of Information and Navigation, Air Force Engineering University;

关键词: Micro-motion;    Micro-Doppler;    Orthogonal Matching Mursuit (OMP);    Wideband radar;   

DOI  :  10.3724/SP.J.1300.2012.20065

来源: DOAJ

【 摘 要 】

In order to extract the micro-motion signatures in condition ofMigration 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.

【 授权许可】

Unknown