地面沉降InSAR监测数据融合方法——以宁波市为例

Fusion method for land subsidence monitoring based on InSAR data:taking Ningbo city as an example

针对传统地面沉降InSAR监测中SAR数据时间跨度较短、多源SAR数据不能联合干涉处理的问题,本文提出了一种地面沉降InSAR监测数据融合方法,在对宁波市两种分辨率Radarsat-2影像进行干涉处理的基础上,获取了长时间序列地面沉降监测结果,并以同步观测的水准数据为参考,从沉降速率和时序沉降量两个方面验证了监测结果的精度和可靠性。

Aiming at the problem that the time span of SAR data in traditional land subsidence monitoring based on InSAR is short and multi-source SAR data cannot be jointly interfered,this paper proposes a fusion method for land subsidence monitoring based on InSAR data.On the basis of InSAR processing of two resolution Radarsat-2 images of Ningbo,the long time series of land subsidence monitoring results are obtained.Besides,the accuracy and reliability of the monitoring results are verified from the aspects of deformation rate and time series cumulated displacement with the reference of the level data of synchronous observation.