时序SAR幅相联合加权融合方法监测矿区形变

Time-series SAR Amplitude-phase Combined Weighted Fusion Method for Monitoring Mining Deformation

针对煤炭资源的井下高强度开采引起的地表形变问题,开展矿区地表形变的精细监测对于指导矿区生产建设和生态修复具有重要意义。提出一种基于时间序列SAR影像差分干涉信息相位叠加和首末两幅SAR影像强度信息Pixel-tracking技术获取大量级形变信息相结合的加权融合方法,对河北省峰峰矿区万年矿开采工作面进行精细监测,结合现场同期水准测量验证,相对于传统的时序差分相位叠加法和Pixel-tracking法,基于时序SAR影像的幅相联合加权融合方法能够明显地提升矿区形变监测的精度,其水准验证精度为0.051 m。

Aimed at the problems of surface deformation caused by the high-intensity mining of coal resources,it is of great significance to carry out fine monitoring of surface deformation in mining area for guiding production construction and ecological rehabilitation.A weighted fusion method is proposed to obtain a large amount of deformation information basing on the phase superposition of the time series SAR image differential interference information and the Pixel-tracking technology of the first and last two SAR image intensity information.The mining face of the Wannian mine in Fengfeng mining area in Hebei Province is monitored finely.The verified accuracy by the field water leveling synchronization measurement is 0.051 m.It is indicated that the amplitude-phase joint weighted fusion method can significantly improve the accuracy of deformation monitoring in mining areas compared to phase stacking method and Pixel-tracking method.