Analysis of Surface Deformation Monitoring in Nanchang Based on Time Series InSAR Technology
With the rapid development of economy and the continuous acceleration of urbanization process,under the influence of human over-development and natural factors,the urban surface de-formation occurs slowly.Accurate and long-term urban surface monitoring is of great significance to protect people's lives and prevent potential risks.In this paper,38 Sentinel-1A images covering the urban area of Nanchang from January 2021 to January 2023 were selected and processed by SBAS-InSAR technology combined with PS ground control points to obtain surface deformation information such as settlement rate and cumulative shape variables,and cross-verified with PS-InSAR results to determine its reliability.Research has shown that the monitoring results obtained by the two methods have strong correlation,with a correlation coefficient of 0.895 6.The deformation of Nanchang city is generally stable,which can be divided into 3 subsidence areas and 1 uplifting area.The causes of surface deformation characteristics are analyzed based on geological structure,groundwater charac-teristics and reconstruction data of old districts.
国家科技期刊平台
NSTL
万方数据
维普
