Ground resolution analysis based on gradient method in geosynchronous SAR

Ground resolution analysis based on gradient method in geosynchronous SAR
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DOI：
10.1109/icspcc.2013.6664080
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发表时间：
2013-11
期刊：
2013 IEEE International Conference on Signal Processing, Communication and Computing (ICSPCC 2013)
影响因子：
--
通讯作者：
Zhouting Wu;Lijia Huang;Donghui Hu;C. Ding
Zhouting Wu;Lijia Huang;Donghui Hu;C. Ding
中科院分区：
其他
文献类型：
--
作者：
Zhouting Wu;Lijia Huang;Donghui Hu;C. Ding

文献摘要

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在地球同步合成孔径雷达(SAR)中，由于卫星和目标之间复杂的相对运动，以及地表曲率的影响，传统的成像几何方法需要进行地面分辨率分析。本文通过增加俯仰角来改进成像几何。然后，在新几何的基础上，利用梯度法推导了地面的距离分辨率和多普勒梯度分辨率。最后，通过仿真结果验证了分辨率分析的正确性。
In geosynchronous synthetic aperture radar (SAR), due to the complex relative motion between the satellite and the target, and the effect of the curvature on the earth surface, the conventional imaging geometry for ground resolution analysis should be innovated. In this paper, the imaging geometry is advanced by adding a pitch angle. Then, based on the new geometry, the range resolution and the Doppler gradient resolution in the ground plane are deduced using gradient method. Finally, the resolution analysis is verified by simulation results.