Narrow‐band interference suppression method in multichannel SAR based on beamforming technique and sparse recovery. Issue 20 (1st October 2018)

• Record Type: Journal Article
• Authors: Lin, Xiaohong; Li, Xianmao; Man, Xin; Tian, Wei
• Is Part Of: Electronics letters. Volume 54:Issue 20(2018)
• Page Start: 1189
• Page End: 1191
• Publication Date: 2018-10-01
• Subjects: radar imaging -- synthetic aperture radar -- interference suppression -- image reconstruction -- signal processing; multichannel synthetic aperture radar image recovery -- sidelobe narrow‐band interference -- NBI steering matrix -- interference signal -- passive mode -- beamforming technique -- energy loss -- target echoes -- suppress NBI -- sparse recovery -- high resolution images -- SAR -- narrow‐band interference suppression method; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2018.5811
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The problem of multichannel synthetic aperture radar image recovery in the presence of sidelobe narrow‐band interference (NBI) is addressed. The NBI steering matrix is accurately estimated with the interference signal received in the passive mode. A beamforming technique is then utilised to minimise the energy loss of the target echoes and suppress NBI to a satisfactory level. By establishing a linear model for the signal with interference removed, the radar image is reconstructed via sparse recovery. The experimental results demonstrate that the proposed method can both suppress NBI effectively and generate high resolution images.