一种基于坐标轴旋转的俯冲段大斜视SAR波数域成像算法

doi:10.11999/JEIT160784

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Abstract

Due to the complexity of SAR imaging of maneuvering platform, traditional imaging algorithms are unavailable in the diving stage with high squint angle. To deal with these problems, the geometric model in diving stage of high squint SAR is constructed and discussed in detail. Furthermore, the spectrum support zone is analyzed. Then, a wavenumber-domain imaging algorithm for high squint diving SAR based on axes rotation is proposed. The wave-number domain imaging processing for sub-aperture data obtains high-usage of spectrum by axes rotation to guarantee the resolution. By doing so, zero-pudding operations in imaging domain are decreased effectively, which lead to the promotion of efficiency. Simulation results and real data processing are presented to valid the superiority of the proposed approach.

Key words： SAR Highly squinted Diving stage Spectrum transform

Received: 22 July 2016 Published: 13 December 2016

PACS:

TN958

Fund:

The National Natural Science Foundation of China (61301292), The AeroSpace T.T.& C. Innovation Program (201509A)

Corresponding Authors: DONG Qi E-mail: dq544120925@126.com

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	DONG Qi
	XING Mengdao
	LI Zhenyu
	SUN Guangcai

Cite this article:

DONG Qi,XING Mengdao,LI Zhenyu等. Wavenumber-domain Imaging Algorithm for High Squint Diving SAR Based on Axes Rotation[J]. JEIT, 2016, 38(12): 3137-3143.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT160784 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I12/3137

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