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

页码：1749 / 1752

页数：4

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