Focusing Azimuth-Invariant Bistatic Synthetic Aperture Radar Data Based on a Polynomial Model

In this paper, a focusing approach is presented to widen the use of efficient monostatic imaging algorithms for azimuth-invariant bistatic synthetic aperture radar （SAR） data. The bistatic range history is modeled by a polynomial of azimuth time. Using this model, an analytic form of the signal spec...

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Published in:Shanghai jiao tong da xue xue bao 2009-12, Vol.14 (6), p.668-675
Main Author: 钟华 刘兴钊 王军锋
Format: Article
Language:English
Subjects:
Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
SAR数据
双基地
双站合成孔径雷达
多项式模型
成像算法
雷达数据
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description In this paper, a focusing approach is presented to widen the use of efficient monostatic imaging algorithms for azimuth-invariant bistatic synthetic aperture radar （SAR） data. The bistatic range history is modeled by a polynomial of azimuth time. Using this model, an analytic form of the signal spectrum in the 2D frequency domain is derived, and a simple single-valued relation between the transmitter and receive ranges is established. In this way, a lot of monostatic image formation algorithms can be extended for the bistatic SAR data, and a bistatic chirp scaling algorithm is developed as an application of the new approach. This algorithm can be used to process the azimuth-invariant bistatic configuration where the transmitter and receiver platforms are moving on parallel tracks with the same velocity. In addition, some simulation results are given to demonstrate the validity of the proposed approach.
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1995-8188
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subjects Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
SAR数据
双基地
双站合成孔径雷达
多项式模型
成像算法
雷达数据
title Focusing Azimuth-Invariant Bistatic Synthetic Aperture Radar Data Based on a Polynomial Model
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