分布式卫星InSAR目标定位近似闭式解

doi:10.3969/j.issn.1001-2400.2012.04.016

J4 ›› 2012, Vol. 39 ›› Issue (4): 87-93.doi: 10.3969/j.issn.1001-2400.2012.04.016

• Original Articles • Previous Articles Next Articles

Quasi-closed-form solution for distributed satellites InSAR geolocation

LIU Yanyang;LI Zhenfang;YANG Juanjuan;BAO Zheng

(National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China)

Received:2011-09-27 Online:2012-08-20 Published:2012-10-08
Contact: LIU Yanyang E-mail:yanyangliu0510@163.com

Abstract

Abstract:

This paper deals with the geolocation problem resulting from the generation of digital elevation models (DEMs) via the distributed satellites interferometric synthetic aperture radar (DS-InSAR). Compared with the repeat-pass InSAR system, the slave SAR in the DS-InSAR system working in a bistatic mode possesses a more complicated focusing geometry, which makes it difficult to get the closed-form solution to geolocation equations. By utilizing the geometry of the master image, a novel equivalent phase center method for the distributed satellites InSAR geolocation is proposed. Accordingly, the quasi-closed-form solution with high accuracy is given. The accuracy of the quasi-closed-form solution is validated by theoretical analysis and simulation results.

Key words: interferometric synthetic aperture radar (InSAR), digital elevation model (DEM), distributed satellite, geolocation, quasi-closed-form solution

CLC Number:

TN957

LIU Yanyang;LI Zhenfang;YANG Juanjuan;BAO Zheng. Quasi-closed-form solution for distributed satellites InSAR geolocation[J].J4, 2012, 39(4): 87-93.

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[1]	ZHANG Jinqiang;SUO Zhiyong;LI Zhenfang;BAO Zheng. Terrain elevation adaptive method for spaceborne InSAR coregistration [J]. Journal of Xidian University, 2018, 45(2): 31-36.
[2]	XUE Haiwei;FENG Dazheng. Fast subpixel registration method for InSAR images [J]. Journal of Xidian University, 2016, 43(3): 172-178.

Quasi-closed-form solution for distributed satellites InSAR geolocation

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