基于DS点的形变参数反演方法

Deformation Parameter Inversion Methods Based on DS

为了解决永久性散射点在郊区或人工目标较少区域的点密度过低,导致形变参数及DEM模型反演困难的痛点。本文选取分布散射点进行研究,其具有数量多、分布广的特点。本研究提出基于DS点相位修正的形变参数反演方法,实验结果表明其与传统永久散射点方法、全球定位系统测量结果一致。与PS算法相比,该方法能一定程度地增加监测点目标的点密度,更适应于郊区、野外等条件下的地表沉降监测应用。

In order to solve the problem that the point density of permanent scattering is rare in the suburbs or the fewer artificial targets area,which makes the inversion of deformation parameters and DEM model to be difficult.With the wide application of SAR technology in recent years,the data processing method of DS(distributed scatterer)point targets has become a research hotspot.In this study,deformation parameter inversion methods based on distributed scatters are presented and discussed with simulation and real data experiments.The main results are as following.The results from the method based on DSs show a desirable consistence with the StaMPS algorithm,GPS and real investigations.Compared to the traditional PS method,it achieves more monitoring targets which leads to the better application in suburban or wide areas.