PSDInSAR监测地表沉降算法及应用  

Method and Application of Measuring Surface Subsidence Using PSDInSAR

作　　者：韩洁[1] 赵拥军[1] 赖涛[1] 黄洁[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2015年第4期458-462,482,共6页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(41301481)

摘　　要：PSDIn SAR与传统的DIn SAR相比,能够克服大气效应和失相关噪声的影响。介绍了PSDIn SAR监测地表沉降的原理及方法,并利用覆盖上海地区的23幅ERS 1/2 C波段SAR图像验证了算法的有效性。理论分析与实验结果表明:利用PSDIn SAR算法估计出的PS点线性形变速率与实际测量数据仅相差1.2717mm/a,沉降量变化趋势与实际资料的沉降统计结果高度吻合,说明PSDIn SAR用于监测地表沉降算法可靠,结论合理。PSDInSAR can overcome the influences of atmospheric phase components and decorrela- tion noise compared with traditional DInSAR. The theory and method of using PSDInSAR to measure surface subsidence are introduced. The validity of PSDInSAR is confirmed using 23 ERS1/2 C band SAR images covering Shanghai. Theoretical analysis and experimental result show that the linear subsidence velocity error between the result and the real measured data is only 1. 2717 mm/a. The subsidence characteristics are highly consistent with the real data. It is proved that PSDInSAR can be used to estimate the surface subsidence credibly and logically.

关 键 词：合成孔径雷达 永久散射体 差分干涉 LAMBDA 地表沉降 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]