| 多基线InSAR干涉图的直接法仿真 |
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| 引用本文： | 张红敏,靳国旺,徐青,王冬,蒋明富.多基线InSAR干涉图的直接法仿真[J].测绘学院学报,2010(2). |
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| 作者姓名： | 张红敏 靳国旺 徐青 王冬 蒋明富 |
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| 作者单位： | 信息工程大学测绘学院;中国科学院电子学研究所微波成像技术国家重点实验室;78155部队; |
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| 基金项目： | 国家自然科学基金资助项目(40771142,40871213);;中国博士后科学基金资助项目(200801111);;信息工程大学测绘学院硕士学位论文创新创优基金(20090201) |
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| 摘 要： | 为了研究多基线InSAR技术,充分利用长、短基线互补的优势来提高获取DEM的精度及可靠性,设计了一种多基线InSAR干涉图的直接法仿真方案。该方案采用正侧视成像模型,由F Leberl方程建立地面点坐标与像点坐标之间的关系,并针对机载多天线InSAR系统构成的多基线模式,直接由DEM中记录的地面点3维坐标计算像点坐标和干涉相位,再对干涉相位进行重采样以得到像点规则排列的干涉图。采用多套DEM进行了多基线InSAR干涉图的仿真实验,得到了较满意的结果,验证了所设计仿真方案的正确性和有效性。
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| 关 键 词： | 合成孔径雷达干涉测量 多基线 干涉图 仿真 重采样 数字高程模型 |
Direct Algorithm for Simulation of Multi-Baseline InSAR Interferograms |
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| ZHANG Hong-min,JIN Guo-wang,XU Qing,WANG Dong,JIANG Ming-fu.Direct Algorithm for Simulation of Multi-Baseline InSAR Interferograms[J].Journal of Institute of Surveying and Mapping,2010(2). |
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| Authors: | ZHANG Hong-min JIN Guo-wang XU Qing WANG Dong JIANG Ming-fu |
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| Institution: | 1.Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China;2.State Key Laboratory of Microwave Imaging Technology;Institute of Electronics;Chinese Academy of Science;Beijing 100190;3.78155 Troops;Chengdu 610036;China |
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| Abstract: | A direct algorithm for simulation of multi-baseline interferograms was designed to study multi-baseline InSAR,which was used to improve the precision and the reliability of derived DEMs by combining the advantages of both longer and shorter baselines.The boresight imaging model was adopted,and the relations between coordinates of pixels in interferograms and coordinates of ground points was established with F Leberl formula.The coordinates and the interferometric phases were calculated directly with 3 dimen... |
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