Abstract
Based on the signal model of fixed-receiver bistatic SAR, this paper analyzes the characteristics of azimuth-variant, which includes variation of range migration curve and variation of Doppler rate caused by different azimuth position of targets. Then, an extended nonlinear chirp scaling (NLCS) algorithm is proposed, with its flowchart and phase compensation functions being provided. Simulation results show that the algorithm is available for the characteristics of azimuth-variant of fixed-receiver bistatic SAR, and good focused radar images could be acquired.
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Geng, X., Hu, Y., Yan, H. et al. An improved imaging algorithm for fixed-receiver bistatic SAR. Sci. China Inf. Sci. 53, 1461–1469 (2010). https://doi.org/10.1007/s11432-010-3103-0
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DOI: https://doi.org/10.1007/s11432-010-3103-0