Research on Nonlinearity Correction Imaging Algorithm of FMCWSAR

摘要：

The frequency modulated continuous wave synthetic aperture radar (FMCW SAR) is a newly proposed radar imaging system, which combines FMCW technique with synthetic aperture imaging methods and has the advantages such as small cubage, light weight cost-efficient, high resolution, etc. In practical SAR system. the frequency and time of the frequency modulated signal cant keep linearity absolutely. The effects of nonlinear frequency modulation on range resolution and FMCW SAR imaging are analyzed. A method of polynomial fit is proposed in order to estimate the nonlinearity of the frequency modulated signal, and the nonlinearity is corrected. Nonlinear FMCW SAR imaging algorithm is researched. Then the simulation results are presented. The results show that this method is valid.

关键词： frequency nrodulated corUinuous wave (FMCW) synthtic aperture radar (SAR) nonlinearity polynomial fit

作者: Wang Ying Li Qingshan Gan Deyun Zheng Guangyong

作者单位: Unit 63891 Peoples Liberation Army, 471003 Unit 63891 PLA Luoyang, China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 425-429

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）