基于DFT滤波器组的大斜视SAR成像算法

doi:10.11999/JEIT150381

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Abstract

The traditional highly squint SAR imaging algorithm reduces the difficulty in range migration correction by using the time-domain linear walking, and improves the azimuth focusing effect by applying non-linear scaling algorithm. However, the variable standard factor introduced also causes some difficulty for processing. To tackle this problem, this article proposes a new algorithm of azimuth focusing on basis of DFT filter bank theory. Compared with the traditional non-linear scaling algorithm, the new algorithm can compensate Doppler frequency rate better by no introduction of phase operation. The stability is improved and the calculation needed is also less than the traditional algorithm. The simulation results presented proves the effectiveness of the proposed algorithm.

Key words： Squint SAR DFT filter banks Non-linear scaling

Received: 10 April 2015 Published: 18 November 2015

PACS:

TN957.72

Fund:

Jiangsu Province University Innovation Program (KYLX_0368)

Corresponding Authors: JIANG Huai E-mail: zero040310120@163.com

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	JIANG Huai
	ZHAO Huichang
	Han Min
	Zhang Shuning

Cite this article:

JIANG Huai,ZHAO Huichang,Han Min等. Highly Squint SAR Imaging Algorithm Based on DFT Filter Banks[J]. JEIT, 2016, 38(1): 104-110.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150381 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I1/104

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