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合成孔径雷达差分干涉测量(DInSAR)技术在地表形变监测方面已得到广泛应用。介绍了将差分InSAR技术运用于矿区地表沉降监测,获得了河北峰峰煤矿地表Envisat/ASAR和ALOS/PALSAR的雷达形变干涉相位图,并对Envisat C波段和ALOS L波段的形变干涉相位图进行了相干特性和相位特性的分析。通过综合考虑C波段和L波段的优势与不足,将两者联合使用,实验表明利用多模式雷达数据对矿区地表沉降进行检测的可行性。同时,通过对雷达干涉相位图的分析,能够及时提供正在进行地下开采活动的矿区地理位置。
Synthetic Aperture Radar Differential Interferometry (DInSAR) technique has been widely used in surface deformation monitoring. This paper introduces the application of differential InSAR technology in surface subsidence monitoring of mining area, obtains the radar deformation interference phase diagrams of surface Envisat / ASAR and ALOS / PALSAR at Fengfeng Coal Mine in Hebei Province, and makes the deformation phase diagrams of Envisat C band and ALOS L band Analysis of coherence and phase characteristics. By considering the advantages and disadvantages of C-band and L-band synthetically, the two methods are used in combination. Experiments show that the feasibility of using multi-mode radar data to detect ground subsidence in mining area is feasible. At the same time, through the analysis of the phase diagram of the radar interference, the geographical location of the mining area undergoing underground mining activities can be timely provided.