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介绍了基线几何参数的估计、干涉相位图生成、干涉相位去平、基线几何参数优化算法、高程解算等原理。利用在中国内蒙古自治区获取的一对SIR C/XSARL波段干涉测量数据研究了干涉测量数据处理方法 ,对整景SAR数据进行了处理 ,生成了相应地面范围的数字高程模型。在试验区地形图的辅助下 ,分析了利用粗略基线几何参数求算高程产生误差的原因 ,实现了基于GCP的基线几何参数优化算法。利用控制点进行校正后 ,数字高程模型的均方根误差达到 16 84m
The principles of baseline geometric parameters estimation, interferogram generation, interference phase removal, baseline geometric parameter optimization and elevation calculation are introduced. Using a pair of SIR C / XSARL band interferometry data acquired in Inner Mongolia Autonomous Region of China, the interferometric data processing method is studied. The data of the panoramic SAR are processed and the digital elevation model of the corresponding ground range is generated. With the help of topographic maps in the test area, the reasons for calculating elevation error using rough baseline geometric parameters are analyzed, and GCP-based baseline geometric parameter optimization algorithm is achieved. After the control points are used for calibration, the root mean square error of the digital elevation model reaches 16 84m