用SBAS-InSAR技术进行沉降观测的可行性研究

Feasibility Study on Settlement Observation Using SBAS-InSAR Technology

我国在2016年8月发射了“高分三号”卫星,为短基线差分干涉测量技术(SBAS-InSAR)的应用提供了条件。SBAS-InSAR是一种利用较短时间和空间基线的影像干涉处理技术。从趋势上来说,SBAS-InSAR在进行长时间缓慢的沉降监测作业时有很大优势,可与多种技术相结合,完成复杂地况的沉降监测工作。传统方式进行沉降观测存在工作量大、范围小、工作周期长等困难,在范围较大、地形较复杂的地区进行测量有一定的局限性。为验证用SBAS-InSAR进行沉降观测的可行性,本文利用SBAS-InSAR技术和传统方式对大连市东港以及其他部分地区进行沉降监测,并将两种测量方式所得的数据结果进行对比,从而验证SBAS-InSAR沉降观测的精度和准确度。

China launched the Gaofen-3 satellite on August 2016,providing conditions for the application of SBAS-InSAR technology.SBAS-InSAR is an image interference processing technique that utilizes short time and space baseline.In terms of trend,SBAS-InSAR has a great advantage in carrying out long-term slow settlement monitoring operations and can be combined with a variety of technologies to solve the settlement monitoring work in complex ground conditions.The traditional method of settlement observation has some difficulties such as heavy workload,small scope,and long working cycle,and has some limitations on the measurement in some areas with large scope and more complex terrain.To verify the feasibility of using SBAS-InSAR for settlement observation,we used SBAS-InSAR technology and traditional methods to monitor settlement in Donggang of Dalian,and other parts of the city.The data obtained by the two measurement methods were compared to verify the accuracy and precision of SBAS-InSAR settlement observations.