作者
Guangcai Sun, Xiuwei Jiang, Mengdao Xing, Zhi-jun Qiao, Yirong Wu, Zheng Bao
发表日期
2011/2/4
期刊
IEEE Transactions on Geoscience and Remote Sensing
卷号
49
期号
6
页码范围
2308-2322
出版商
IEEE
简介
Since synthetic aperture technology was employed in radar signal processing, the information capability of radar has greatly been enhanced. A lot of imaging algorithms have also been developed. However, the high-resolution imaging for highly squinted synthetic aperture radar data is still a difficult issue due to large range migration and strong range dependence on the secondary range compression term that is relatively large and cubic with high focusing sensibilities for high resolution. To accommodate for this problem, the "squint-minimization" operation and azimuth nonlinear chirp scaling (CS) (ANCS) operation are studied in this paper. On the basis of these operations, we propose new imaging algorithms and analyze the characteristic of highly squinted data and the difficulty in focusing these data as well as discussing the principle of ANCS. We also introduce a new CS algorithm, and numerical examples …
引用总数
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学术搜索中的文章
G Sun, X Jiang, M Xing, Z Qiao, Y Wu, Z Bao - IEEE Transactions on Geoscience and Remote …, 2011