Spaceborne SAR imaging by exact compensation of the attitude errors

Zhiyong Zhang; Zhiguo Cao; Tianxu Zhang

doi:10.1117/12.357632

13 August 1999 Spaceborne SAR imaging by exact compensation of the attitude errors

Zhiyong Zhang, Zhiguo Cao, Tianxu Zhang

Proceedings Volume 3721, Algorithms for Synthetic Aperture Radar Imagery VI; (1999) https://doi.org/10.1117/12.357632
Event: AeroSense '99, 1999, Orlando, FL, United States

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.

Citation Download Citation

Zhiyong Zhang, Zhiguo Cao, and Tianxu Zhang "Spaceborne SAR imaging by exact compensation of the attitude errors", Proc. SPIE 3721, Algorithms for Synthetic Aperture Radar Imagery VI, (13 August 1999); https://doi.org/10.1117/12.357632

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