基于PALSAR数据的青藏高原地区冻土形变监测  

The study of monitoring Qinghai-Tibet plateau frozen ground motion from PALSAR data

作　　者：王平[1] 任小冲[2] 尹宏杰[1] 秦佐[1] 

机构地区：[1]中南大学信息物理工程学院,长沙410083 [2]中山市地理信息系统中心,广州中山528400

出　　处：《工程勘察》2010年第1期55-58,62,共5页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金(40774003);国家863专题项目(2006AA12Z156);国家西部1:50000空白区测图工程2007年度研究课题

摘　　要：随着青藏铁路的开通,对青藏高原地区进行形变监测显得尤为重要,由于ALOS卫星PALSAR传感器采用的是L波段,相干性得到明显改善,适合于地形较复杂区域和冻土地区监测。本文选择了青藏高原地区部分时间段的PALSAR数据,采用外部DEM,运用GAMMA软件进行二轨法差分干涉测量,获得该地区的形变图。结合实地情况进行定性分析,其形变较好的符合冻土的物理变化规律,证明了PALSAR数据在青藏高原冻土地区运用于形变监测具有良好的前景。With the opening of Qinghai-Tibet Railway, deformation monitoring has become very important at Qinghai-Tibet plateau region. Due to the adoption of the L-band, the coherence of map of ALOS satellite PALSAR sensor has remarkably improved. Therefore, it is perfect for monitoring varied topographies and frozen ground. This paper chose the PALSAR data of the Qinghai-Tihet plateau at certain time period and obtained the deformation map of the region by employing the external DEM, besides using GAMMA software for 2-pass interferometers. The paper also made a qualitative analysis according to the field situation and found that deformation was conformed to the law of physical changes. Meanwhile, it proved that the PALSAR data should have good prospects in deformation monitoring for the frozen ground at Qinghai-Tibet plateau.

关 键 词：冻土 青藏高原 D-INSAR PALSAR 

分 类 号：P225.1[天文地球—大地测量学与测量工程]