| 一种机载冰川厚度探测雷达波数域成像算法 |
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| 引用本文： | 赵博,刘小军,方广有.一种机载冰川厚度探测雷达波数域成像算法[J].数据采集与处理,2010,25(3). |
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| 作者姓名： | 赵博 刘小军 方广有 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100190;中国科学院研究生院,北京,100049
2. 中国科学院电子学研究所,北京,100190 |
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| 基金项目： | 国家"八六三"高技术研究发展计划，国家自然科学基金 |
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| 摘 要： | 针对机载冰川厚度探测雷达传统成像方法计算量大的问题,提出了一种适用于两层传播媒质的正下视波数域(RMA)成像算法.该算法能自动补偿电磁波的折射效应,校正不同媒质中电磁波传播速度的变化.基于空间几何模型和回波信号形式,推导了雷达回波信号的二维频谱,并在此基础上给出了成像算法实现步骤及相位补偿因子,分析了运动误差的影响及其补偿方法.最后通过仿真分析验证了该算法的有效性.
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| 关 键 词： | 冰川探测雷达 波数域算法 机载雷达 冰川厚度 正下视 |
Imaging Algorithm Based on RMA for Air Borne Glacier Penetrating Radar System |
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| Zhao Bo,Liu Xiaojun,Fang Guangyou.Imaging Algorithm Based on RMA for Air Borne Glacier Penetrating Radar System[J].Journal of Data Acquisition & Processing,2010,25(3). |
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| Authors: | Zhao Bo Liu Xiaojun Fang Guangyou |
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| Affiliation: | Zhao Bo1,2,Liu Xiaojun1,Fang Guangyou1(1.Institute of Electronics,Chinese Academy of Sciences,Beijing,100190,China,2.Graduate University of Chinese Academy of Sciences,100049,China) |
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| Abstract: | Based on the problem that the traditional imaging method for air borne glacier penetrating radar is time consuming,a nadir-looking range migration imaging algorithm(RMA) for two mediums is studied.The algorithm can automatically compensate the refraction of the electromagnetic wave and the propagation velocity changes in different mediums.According to the spatial geometry and the model of echo signal,the 2-D spectrum of the radar echo is proposed and the realized steps of algorithm and phase compensation fa... |
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| Keywords: | glacier penetrating radar range migration algorithm(RMA) airborne radar ice thickness nadir-looking |
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