The Precise analytical Calculation of Fourth-order Doppler Parameters for Geosynchronous SAR

被引：0
|
作者：
Jiang Mian [1 ]
Han Kuoye [1 ]
Wang Huan [1 ]
Liu Guanghong [1 ]
机构：
[1] China Elect Technol Grp Corp CETC, Informat Sci Acad, Beijing 100098, Peoples R China
来源：
2017 4TH INTERNATIONAL CONFERENCE ON INFORMATION SCIENCE AND CONTROL ENGINEERING (ICISCE) | 2017年
关键词：
Doppler parameters; Geosynchronous Synthetic Aperture Radar; fourth-order; Synthetic Aperture Radar;
D O I：
10.1109/ICISCE.2017.365
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Compared with current Low-Earth-Orbit spaceborne Synthetic Aperture Radar (LEO SAR), Geosynchronous SAR (GEO SAR) is featured in its ultra-high orbit and ultra-long integration time. Due to the non-linear property of the ultra-long synthetic aperture, the traditional Doppler parameter calculation methods based on the linear motion model are invalid for GEO SAR A precise analytical algorithm to calculate the fourth-order Doppler parameters for GEO SAR is proposed, analyzed and verified in this paper. We first proposed the analytical expression of fourth-order Doppler parameters for GEO SAR, and the results can be used in arbitrary ellipse orbit cases. Then, a precise fourth-order Doppler parameter calculation algorithm is developed based on the deduced formulae. Finally, the accuracy of the calculation algorithm is verified by processing real data of a drifted geostationary satellite experiment.
引用
收藏
页码：1749 / 1752
页数：4
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