Focusing one-stationary bistatic forward-looking synthetic aperture radar with squint minimisation method

被引：10

作者：

Ma, Chao ^{[1
]}

Gu, Hong ^{[1
]}

Su, Weimin ^{[1
]}

Zhang, Xiaohu ^{[1
]}

Li, Chuanzhong ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Inst Elect Engn & Optoelect Technol, Nanjing 210094, Jiangsu, Peoples R China

来源：

IET RADAR SONAR AND NAVIGATION | 2015年 / 9卷 / 08期

基金：

中国国家自然科学基金;

关键词：

SAR;

D O I：

10.1049/iet-rsn.2014.0499

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study deals with the imaging problem of one-stationary bistatic forward-looking synthetic aperture radar (BFSAR). This BFSAR has extensive potential applications, such as self-navigation and self-landing in the airport. However, the forward-looking (or squint) angle is usually large in one-stationary BFSAR. It causes large range migration and strong range dependence on the secondary range compression term. Therefore it is difficult to use traditional imaging algorithms to focus one-stationary BFSAR. To solve this problem, an imaging algorithm based on squint minimisation method is proposed in this study. The squint minimisation operation can shear the high forward-looking angle data spectrum and decrease the coupling between range and azimuth. Then, the authors derive a modified range Doppler algorithm (RDA) to focus the sheared data. Numerical simulations show that by combining squint minimisation method and modified RDA, the raw data of one-stationary BFSAR can be well imaged.

引用

页码：927 / 932

页数：6

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