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Proceedings Paper

A new subaperture chirp scaling imaging algorithm for spaceborne spotlight SAR
Author(s): Jinping Sun; Zhifeng Yang; Wen Hong; Shiyi Mao
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Paper Abstract

In order to overcome the azimuth spectrum folding occurrence in the spotlight imaging mode of the high resolution spaceborne Synthetic Aperture Radar (SAR), we presented a new subaperture chirp scaling algorithm (CSA) in this paper. Several phase functions of the extended CSA were modified according to the properties of subaperture processing. These modifications make the new algorithm realize the precise recombination of the phase history data of each subaperture without any additional computation load, making the subaperture overlapping and azimuth time extension unnecessary. The validity of this new algorithm is proved through point target simulations by adopting TerraSAR-X system parameters in the spotlight mode with 1m resolution and a swath of 10Km both in the range and azimuth.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67953I (10 November 2007); doi: 10.1117/12.774859
Show Author Affiliations
Jinping Sun, Beihang Univ. (China)
Zhifeng Yang, Institute of Electronics (China)
Wen Hong, Institute of Electronics (China)
Shiyi Mao, Beihang Univ. (China)

Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Jiaolong Wei, Editor(s)

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