Studies on MB-SAR 3D imaging algorithm using Yule-Walker method

Studies on MB-SAR 3D imaging algorithm using Yule-Walker method
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基于Yule-Walker方法的MB-SAR 3D成像算法研究

DOI:
10.1007/s11432-010-4040-7
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发表时间:
2010-09
期刊:
中国科学F辑:信息科学(英文版)
影响因子:
--
通讯作者:
谭维贤
谭维贤
中科院分区:
其他
文献类型:
--
作者:
洪文;王斌;王彦平;吴一戎;谭维贤

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多基线合成孔径雷达(MB-SAR)利用多个平行观测点在高度方向形成合成孔径,具有高度方向分辨能力,可实现对目标的三维成像。分析了基于谱估计的MB-SAR解析模型。基于更一般的几何模型,我们推导了MB-SAR三维成像的信号模型。在此基础上提出了Yule-Walker算法实现MB-SAR三维成像,分析了Yule-Walker算法的原理,给出了Yule-Walker算法的实现步骤。该算法可以用较少的观测值得到高分辨率的目标三维图像。最后,给出了利用Yule-Walker算法对MB-SAR进行三维成像的实验结果。
Multibaseline synthetic aperture radar (MB-SAR) can form a synthetic aperture in the height direction with multiple parallel observations, so it has the resolving capability in the height direction and can realize three-dimensional (3D) imaging for the target. The analytic model of MB-SAR based on spectrum estimation is analyzed in this paper. Based on the more general geometric model, we derive the signal model for MB-SAR 3D imaging. And then Yule-Walker algorithm is proposed to realize MB-SAR 3D imaging meanwhile the principle is analyzed and the steps of Yule-Walker algorithm are given. This algorithm can get the 3D image of the target with high resolution using fewer observations. Finally, the experimental results of MB-SAR 3D imaging using Yule-Walker algorithm are presented, which are generated with the simulated data and the data collected in anechoic chamber.
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