电子学报2012，Vol.40Issue(6)：1073-1078,6.DOI:10.3969/j.issn.0372-2112.2012.06.001
基于压缩感知的脉间捷变频SAR成像研究
Research on Interpulse Frequency Agility SAR Imaging via Compressed Sensing
摘要
Abstract
When carrier frequency agility is applied to SAR system, there could be some problems, such as Doppler chirp rate agility, focus-out in azimuth, etc. After we analyzed the phase characteristic of radar echo, correlation algorithm was applied to pulse compression in azimuth firstly. Considering the connatural problems of low efficiency and high side lobe level that correlation algorithm had, pulse compression algorithm based on compressed sensing was presented, which made use of the sparsity of echo signals. Then, a strategy about frequency agility SAR imaging was proposed which involves pulse compression in range based on matching filter and pulse compression in azimuth based on compressed sensing. The results indicate that imaging strategy can both conquer Doppler chirp rate agility and achieve frequency agility SAR imaging, which has the merit of lower side lobe level and higher resolution.关键词
SAR/载频捷变/方位压缩/压缩感知Key words
SAR/carrier frequency agility/ pulse compression in azimuth/compressed sensing分类
信息技术与安全科学引用本文复制引用
刘天鹏,刘振,魏玺章..基于压缩感知的脉间捷变频SAR成像研究[J].电子学报,2012,40(6):1073-1078,6.基金项目
国家自然科学基金委杰出青年基金(No.61025006) （No.61025006）
湖南省研究生创新基金(No.CX2011B019) （No.CX2011B019）
国防科技大学优秀研究生创新资助(No.B110404) （No.B110404）
