一种机载合成孔径雷达自主定位算法
收稿日期: 2013-11-06
修回日期: 2014-04-04
网络出版日期: 2014-04-09
基金资助
航空科学基金（20132007001）；国防基础科研计划（B2520110008）；南京航空航天大学基本科研业务费（NS2013023）
A Autonomous Location Algorithm of Airborne Synthetic Aperture Radar
Received date: 2013-11-06
Revised date: 2014-04-04
Online published: 2014-04-09
Supported by
Aeronautical Science Foundation of China (20132007001);Defense Industrial Technology Development Program(B2520110008);NUAA Fundamental Research Funds(NS2013023)
宋伟 , 朱岱寅 , 叶少华 , 李勇 . 一种机载合成孔径雷达自主定位算法[J]. 航空学报, 2014 , 35(8) : 2279 -2285 . DOI: 10.7527/S1000-6893.2014.0041
Aimed at the application of airborne synthetic aperture radar (SAR), airborne SAR autonomous location technology is studied in this paper. A new location algorithm by imaging the area of the target repeatedly is proposed. This algorithm will not be influenced by the velocity error and angle error of the platform and it only uses the carrier aircraft instantaneous position and the distance between the radar and the target, which can significantly improve the location precision of airborne SAR. A location algorithm based on the least square method is analytically derived when carrier craft flights staring at target, which can further improve the location precision. Finally, the new presented method is compared with SAR location techniques based on the traditional R-D model. Real data processing results demonstrate that the new algorithm proposed in the paper can improve the location precision significantly.
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