一种同轨双基SAR的非线性CS成像算法

doi:10.3969/j.issn.1001-2400.2014.03.001

Abstract

Abstract:

Focusing on the range variance of the range cell migration (RCM) and the second range compression (SRC) for tandem bistatic SAR with high squinted angles, a nonlinear chirp scaling algorithm (NCSA) is proposed to handle the problems based on an exact analytical bistatic spectrum. Unlike the chirp scaling (CS) imaging algorithm which is suitable for the case with small squint angles, not only is the variation with the Doppler frequency considered for the Doppler chirp rate, but also its variation with range is taken into account. The proposed algorithm can compensate the SRC for tandem bistatic SAR well. Satisfactory results are obtained with simulated experiments.

Key words: bistatic synthetic aperture radar, nonlinear chirp-scaling algorithm, radar imaging

CLC Number:

TN957

CHEN Shichao;XING Mengdao;BAO Zheng. Focusing of highly-squinted bistatic SAR using the nonlinear CS algorithm for constant-offset configuration[J].J4, 2014, 41(3): 1-7.

References

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Focusing of highly-squinted bistatic SAR using the nonlinear CS algorithm for constant-offset configuration

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