Feasibility analysis on the chirp scaling based wideband and wide swath synthetic aperture imaging algorithm

Jinhua Lv; Zhen Tian; Guangyu Cheng; Yong Hong

doi:10.1117/12.2244859

29 August 2016 Feasibility analysis on the chirp scaling based wideband and wide swath synthetic aperture imaging algorithm

Jinhua Lv, Zhen Tian, Guangyu Cheng, Yong Hong

Author Affiliations +

Proceedings Volume 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016); 1003336 (2016) https://doi.org/10.1117/12.2244859
Event: Eighth International Conference on Digital Image Processing (ICDIP 2016), 2016, Chengu, China

Abstract

With the increase of the ratio between signal bandwidth and carrier frequency in the synthetic aperture sonar system, most of conventional imaging algorithms cannot be used for their narrow band approximation inherently. This paper analyzes the determining factors in designing an effective chirp scaling (CS)-based algorithms for focusing the wideband and wide swath synthetic aperture data. Based on the analysis, it is a great potential in designing an effective CS-based wideband and wide swath algorithm for taking into account the higher-order terms with respect to the range baseband frequency in the approximation of the 2-D spectrum and taking into account the higher-order range-variant terms in the approximation of the equivalent chirp rate. The results of simulation show the effectiveness of the theory analysis.

Citation Download Citation

Jinhua Lv, Zhen Tian, Guangyu Cheng, and Yong Hong "Feasibility analysis on the chirp scaling based wideband and wide swath synthetic aperture imaging algorithm", Proc. SPIE 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016), 1003336 (29 August 2016); https://doi.org/10.1117/12.2244859

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