应用InSAR与GPS集成技术监测地表形变探讨  

Integration of InSAR and GPS for Ground Deformation Monitoring

作　　者：罗海滨[1] 何秀凤[1] 

机构地区：[1]河海大学卫星及空间信息应用研究所,江苏南京210098

出　　处：《遥感技术与应用》2006年第6期493-496,共4页Remote Sensing Technology and Application

基　　金：国家自然科学基金资助项目(50279005);现代水利科技创新项目(XDS2004-07)

摘　　要：合成孔径雷达干涉及其差分技术在地面沉降等研究与监测中有广阔的应用前景,具有不可替代的优势。但是由于系统本身因素以及地面植被、湿度及大气条件变化的影响,其精度及适用性受到一定的限制。与此同时,利用GPS技术监测地面沉降日臻成熟与完善。GPS-InSAR集成方法作为两种方法的结合,能够在空间域和时间域同时提升地面沉降监测的能力,已开始成为国内外地面沉降测量技术研究的重点。介绍了InSAR与GPS两种技术的特点及互补性,分析了利用GPS数据消除InSAR对流层延迟误差及轨道误差的方法,探讨了利用双插双估计(D IDP)方法实现In-SAR与GPS两种数据融合的方法,并给出了D IDP算法的具体实现步骤。The technique of InSAR have great potential in detecting displacements caused by ground subsidence which sometimes can't be achieved by other methods.But the application and accuracy of InSAR will be influenced because of its some inherent factors and variations of ground plant,humidity and atmosphere at different time.Meanwhile,application of GPS to measures land deformation has become an efficiently and accurately measuring technology.GPS-InSAR integration can enhance the ability of measuring land deformation in both temporal and spatial resolution;it is becoming an emphasis of land subsidence investigation.This paper introduces firstly the complement of the InSAR and GPS.Then,the approach to derive atmospheric corrections to the InSAR images from CGPS datas and the method to remove or mitigate SAR satellite orbit errors using GPS results as constraints are analyzed.Finally,the Double Interpolation and Double Prediction(DIDP) approach for integrating InSAR and GPS results is given.

关 键 词：合成孔径雷达干涉测量 全球定位系统 地表形变 集成技术 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]