基于D-In SAR的相位差分算法研究  

Research of Phase Difference Algorithm Based on D-InSAR

作　　者：邓昊文 魏超 赵方正 DENG Haowen;WEI Chao;ZHAO Fangzheng(Shandong University of Science and Technology,Qingdao 266590,China;Beijing Urban Construction Exploration and Surveying Design Research Institute Co.Ltd.,Qingdao Branch,Qingdao 266035,China)

机构地区：[1]山东科技大学,山东青岛266590 [2]北京城建勘测设计研究院有限公司青岛分院,山东青岛266035

出　　处：《测绘与空间地理信息》2018年第12期91-93,97,共4页Geomatics & Spatial Information Technology

摘　　要：在D-InSAR技术中,选取合适的相位差分算法可以从干涉相位中去除地形相位从而获取形变相位。本文采用3景拉斯维加斯地区的ERS1/2数据,分别利用二轨法、三轨法和四轨法进行相位差分,对沉降结果以及处理时间进行对比分析。结果表明,3种算法均能满足实际应用的精度要求;有可用的高精度外部DEM时,优先考虑二轨法,效率最高;当可获得的高质量影像数据量较多时,可以使用四轨法提高精度。In the D-InSAR technology,select the appropriate phase difference algorithm,the terrain phase can be removed from the interferometric phase to obtain the deformed phase.This paper uses the 3 ERS1/2 data of the Las Vegas area and uses two-track method,three-track method and four-track method respectively for phase difference,the results of the settlement and the processing time were compared and analyzed.The results show that the three algorithms can meet the precision requirements of practical application;when the available high precision external DEM is used,the two rail method is preferred,with the highest efficiency;when the amount of high-quality image data available is high,you can use the four-track method to improve accuracy.

关 键 词：D-INSAR 相位差分 DEM 沉降监测 

分 类 号：P236[天文地球—摄影测量与遥感]