方位多通道HRWS SAR多普勒中心稳健估计算法

doi:10.3969/j.issn.1001-2400.2018.01.006

Abstract

Abstract:

In multichannel high-resolution and wide-swath(HRWS) synthetic aperture radar(SAR) systems, a novel method for the Doppler centroid estimation is proposed. First, by exploiting temporal characteristics of multichannel SAR data, mathematical expressions for channel phase biases on the Doppler centroid are established. Second, based on the fact that phase biases decrease the signals inside the Doppler bandwidth, the Doppler centroid could be estimated by maximizing the energy inside the Doppler bandwidth. Experimental results show that the proposed method has an estimation accuracy similar to that of the spatial cross-correlation coefficient method but has more robustness.

Key words: synthetic aperture radar, Doppler centroid, multichannel

FANG Chao;LIU Yanyang;LI Zhenfang;REN Wei;CHEN Junli. Robust Doppler centroid estimation method for multichannel HRWS SAR[J].Journal of Xidian University, 2018, 45(1): 30-34+116.

References

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Robust Doppler centroid estimation method for multichannel HRWS SAR

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