差分雷达干涉测量方法( D-InSAR)可以对沉降监测区的空间连续曲面的形变进行有效监测，具有高精度、连续性监测、成本低廉等特点，是一种对矿区沉降监测十分有效率的方法。以丰城某煤矿为例，根据获取的雷达影像图，利用D-InSAR技术对4个干涉对进行二轨差分处理得到沉降信息，对照沉降区的实际情况，分析去相干源影响，并对其误差作了简要分析。结果显示：利用D-InSAR技术的二轨差分方法，能够得到比较直观准确的矿区地表沉降结果，结合矿区的实际情况，说明了D-InSAR技术具有较高实用性。%Differential radar interferometry technology ( D-InSAR) to monitor subsidence deformation in space continuous curved surface of subsidence area,with high precision, continuous monitoring, low cost. It is a useful supplement to the monitoring method of ground subsidence in the mining area. Taking a coal mine in Fengcheng as an example,based on the acquired radar images,using D-InSAR technology to get the settlement information of the four Interference pairs,simple analysis of the influ-ence of the coherent sources and the error in the actual situation of the control mine area. The results show that D-InSAR can accurately reflect the position of mining subsidence and sinking degree,espe-cially in complex geomorphological and geological conditions under the condition of D-InSAR tech-nology shows more in monitoring the applicability,advantages and practical value of ground subsid-ence in mining area.
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