一种SAR/GMTI系统距离模糊杂波抑制方法

doi:10.3969/j.issn.1001-2400.2017.05.021

Abstract

Abstract:

A range ambiguous clutter suppression approach based on frequency diverse array configuration is proposed to handle the range ambiguity of the space borne wide-swath high-resolution synthetic aperture radar ground moving target indication (SAR/GMTI) system with a high pulse repetition frequency. Since echoes from different ambiguous range regions are separable in the transmit spatial frequency domain, a filter bank is employed to extract echoes from each region, and then the transmit beam forming is implemented to suppress the clutter in each range region. Simulation results demonstrate that, by making full use of the limited channels, the proposed method could weaken the influence of heterogeneous clutter in each region and reconstruct moving target signals without range ambiguity, so as to expand the detection region evidently.

Key words: synthetic aperture radar, target detection, frequency diverse array, clutter suppression, range ambiguity

LIN Chenchen;HUANG Puming;WANG Weiwei;LI Yu. Range ambiguous clutter suppression for the SAR/GMTI system based on the frequency diverse array[J].Journal of Xidian University, 2017, 44(5): 121-126.

References

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Range ambiguous clutter suppression for the SAR/GMTI system based on the frequency diverse array

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