ACCURATE COMPENSATION OF STOP-GO APPROXIMATION FOR HIGH RESOLUTION SPACEBORNE SAR USING MODIFIED HYPERBOLIC RANGE EQUATION

被引：2

作者：

Kuang, Hui ^{[1
]}

Chen, Jie ^{[1
]}

Yang, Wei ^{[1
]}

Zhu, Yan-qing ^{[1
]}

Zhou, Jian ^{[1
]}

Li, Chun-sheng ^{[1
]}

机构：

[1] Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China

来源：

2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2014年

关键词：

SAR; Straight Trajectory Assumption; Stop-go Approximation; Three-steps Algorithm;

D O I：

10.1109/IGARSS.2014.6946459

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：

For high resolution spaceborne SAR system, the errors caused by straight trajectory assumption and stop-go approximation cannot be ignored. In this paper, an algorithm is proposed to compensate the above errors. First, a novel modified hyperbolic range equation (MHRE) is introduced to describe the satellite's orbit which is more precise than the traditional hyperbolic range equation (THRE). Then, the accurate signal model without stop-go approximation is deduced based on the MHRE. What's more, the residual phase errors in two-dimensional frequency domain caused by the two error sources are obtained. At last, the accuracy and validity of the proposed compensation algorithm are verified by the computer simulation results.

引用

页数：4

共 9 条

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