Approach for single channel SAR ground moving target imaging and motion parameter estimation
Approach for single channel SAR ground moving target imaging and motion parameter estimation
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DOI：
10.1049/iet-rsn:20060040
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发表时间：
2007-03
影响因子：
1.7
通讯作者：
Feng Zhou;R. Wu;M. Xing;Z. Bao
中科院分区：
文献类型：
--
作者：
Feng Zhou;R. Wu;M. Xing;Z. Bao
近年来，合成孔径雷达(SAR)中的地面运动目标成像受到了国内外众多研究人员的关注。提出了一种利用单通道合成孔径雷达进行地面运动目标成像和运动参数估计的新方法。首先，使用二阶广义Keystone格式化方法来补偿距离曲率。其次，利用目标回波包络的斜率估计值进行距离走动补偿。第三，利用频谱分析得到的运动目标的多普勒参数，对地面运动目标进行成像和定位。最后，根据多普勒与运动参数之间的关系，估计出运动目标的运动参数。数值结果和实验结果验证了该方法的有效性。
In recent years, ground moving target imaging in synthetic aperture radar (SAR) has attracted the attention of many researchers all over the world. A novel approach is proposed for the ground moving target imaging and motion parameter estimation using single channel SAR. First, a second-order generalised keystone formatting method is used to compensate for the range curvature. Secondly, the estimated slope of the target echo's envelope is used for the range walk compensation. Thirdly, Doppler parameters of moving targets obtained via spectral analysis are used for the imaging and positioning of ground moving targets. Finally, motion parameters of moving targets can be estimated on the basis of the relationship between Doppler and motion parameters. Both numerical and experimental results are provided to demonstrate the performance of the proposed approach.