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Proceedings Paper

Spaceborne SAR imaging by exact compensation of the attitude errors
Author(s): Zhiyong Zhang; Zhiguo Cao; Tianxu Zhang
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Paper Abstract

When the space-borne SAR works on the low-stability platform, the Doppler parameters (Doppler centroid and Doppler frequency rate) show variations during the azimuth illumination time, except that the variation of the Doppler parameters as a function of the range distance. That is to say, the azimuth reference function is two-dimensional variant (in range distance and azimuth), the conventional clutter lock and auto- focus for estimation of Doppler parameters are not sufficient for imaging. A model-based algorithm is proposed to exactly compensate the error introduced by the platform attitude instability, the efficiency of the algorithm is tested with computer simulation.

Paper Details

Date Published: 13 August 1999
PDF: 8 pages
Proc. SPIE 3721, Algorithms for Synthetic Aperture Radar Imagery VI, (13 August 1999); doi: 10.1117/12.357632
Show Author Affiliations
Zhiyong Zhang, Huazhong Univ. of Science and Technology (China)
Zhiguo Cao, Huazhong Univ. of Science and Technology (China)
Tianxu Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3721:
Algorithms for Synthetic Aperture Radar Imagery VI
Edmund G. Zelnio, Editor(s)

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