引用本文: 曹海坤, 赵丽华, 张勤, 瞿伟, 聂建亮. 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[J]. 武汉大学学报 ( 信息科学版), 2018, 43(9): 1362-1368.
CAO Haikun, ZHAO Lihua, ZHANG Qin, QU Wei, NIE Jianliang. Ascending and Descending Orbits InSAR-GPS Data Fusion Method with Additional Systematic Parameters for Three-Dimensional Deformation Field[J]. Geomatics and Information Science of Wuhan University, 2018, 43(9): 1362-1368.
 Citation: CAO Haikun, ZHAO Lihua, ZHANG Qin, QU Wei, NIE Jianliang. Ascending and Descending Orbits InSAR-GPS Data Fusion Method with Additional Systematic Parameters for Three-Dimensional Deformation Field[J]. Geomatics and Information Science of Wuhan University, 2018, 43(9): 1362-1368.

## Ascending and Descending Orbits InSAR-GPS Data Fusion Method with Additional Systematic Parameters for Three-Dimensional Deformation Field

• 摘要: 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。

Abstract: According to the fact that InSAR has the advantages of the high spatial resolution while GPS has the advantages of the high precision and high time resolution, we discuss the method of obtaining high precision three-dimensional deformation field by integrating both ascending and descen-ding orbits InSAR data and GPS data. To weaken the influence of the remaining systematic errors in InSAR data, an integrated deformation analysis model with additional systematic parameters is established, where systematic error functions related to the position of observed points are added in both ascending and descending orbits InSAR observation equations under the constraint of high accurate GPS observations. The simulated and practical examples show that the proposed method can identify systematic error in InSAR data effectively and the calculation is simple. As a result, the three-dimensional deformation field with a higher accuracy will be established by the method proposed in this paper.

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