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- 2018
利用附加系统误差参数的升降轨InSAR-GPS数据融合方法建立三维形变场
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Abstract:
针对合成孔径雷达干涉测量技术（interferometric synthetic aperture radar，InSAR）监测形变时高空间分辨率的优势以及GPS监测数据高精度、高时间分辨率的特点，对升、降轨InSAR与GPS数据融合获取高精度的三维形变场的方法展开研究。提出以高精度的GPS观测值为约束，对升、降轨InSAR观测方程分别添加一个跟点的位置有关的系统误差函数，以对InSAR数据中残留的系统误差进行修正，减弱或消除系统误差的影响。模拟数据和实测数据表明，该方法能够有效地补偿不同轨道InSAR数据与GPS数据间的系统误差影响，且计算简单；采用附加系统误差参数的升、降轨InSAR-GPS综合形变分析模型建立的三维形变场具有更高的精度
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