作者
Qi DONG, Zemin YANG, Zhenyu LI, Guangcai SUN, Mengdao XING
发表日期
2016/12/19
期刊
电子与信息学报
卷号
38
期号
12
页码范围
3166-3173
出版商
电子与信息学报
简介
Due to the acceleration in the moving of the platform, the SAR imaging of highly squinted maneuvering platform becomes a problem to be solved urgently. The majority of currently existing range models fail in taking the azimuth-variation into consideration, so the well-focused images are not obtained. To solve these problems, a new azimuth-variation range model under the non-linear trajectory caused by acceleration is constructed. Based on this model, a wavenumber-domain imaging algorithm for high squint SAR is proposed, which takes advantage of the azimuth-variation filter to remove the azimuth chirp rate changes and Doppler center changes caused by the acceleration. By the analysis of the model error, the precision of the model is confirmed. Contrast simulation results are presented to valid the superiority of the proposed approach.
引用总数
20172018201920202021213
学术搜索中的文章