双基SAR成像的点目标解析频谱研究

丁金闪; OtmarLoffeld; HolgerNies; 邢孟道; 保铮

doi:10.3724/SP.J.1146.2007.01955

双基SAR成像的点目标解析频谱研究

doi: 10.3724/SP.J.1146.2007.01955

丁金闪^{①②;OtmarLoffeld},
OtmarLoffeld,
HolgerNies,
邢孟道,
保铮

基金项目:

新世纪优秀人才支持计划项目(NCET-06-0861)和国家留学基金委资助课题

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出版历程
- 收稿日期: 2007-12-25
- 修回日期: 2008-06-30
- 刊出日期: 2009-04-19

Study of Point Target Spectrum for Bistatic SAR Imaging

摘要

摘要: 双基SAR距离徙动由于存在两个双曲线形式，使用传统的驻定相位原理方法难以解析得到双基下的目标二维频谱。该文总结了LBF方法，级数反演方法，利用双基成像几何的瞬时频率方法以及基于等效单基思想的DMO方法，并给出了必要的分析，给出了DMO方法和GBF的等效性，验证了在任意构型下级数反演方法和LBF的关系。通过不同双基构型下的点目标成像仿真结果详细分析了各种方法的聚焦性能。
- 合成孔径雷达;双基SAR(BiSAR);点目标频谱
Abstract: An exact analytic solution for the 2-dimensional point target reference spectrum is difficult to find for bistatic SAR image formation due to a double hyperbola in the bistatic range migration equation. Four methods of the point target reference spectrum are analyzed, namely Loffelds Bistatic Formula (LBF), Method of Series Reversion (MSR), Geometry-based Bistatic Formula (GBF) and the Dip Move Out (DMO) approach. The link between GBF and DMO is given in detail in this paper, and also the link between MSR and LBF is validated by simulation results.

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参考文献(1)

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