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本文采用SBAS技术提取采空区上方高速公路高相干点的时序沉降量,并利用试验证明了SBAS技术具有监测线状建筑的能力,对建筑物下采煤的安全监测具有重要意义。一、SBAS沉降监测基本原理2002年,Berardino和Lanari等提出小基线集(SBAS)方法,通过设定一定的时间、空间阈值自由组合干涉对,削弱时、空失相关的影响。SBAS在SAR影像数量一定的情况下,可以形成更多的干涉
In this paper, the SBAS technology was used to extract the timing settlement of the high coherence point of the expressway above the goaf, and the SBAS technology was proved to have the capability of monitoring the linear buildings by tests, which is of great significance to the safety monitoring of coal mining under the buildings. First, the basic principle of SBAS settlement monitoring In 2002, Berardino and Lanari proposed a small baseline set (SBAS) method, by setting a certain time and space threshold free combination of interference pairs, weakening, when the impact of void loss. SBAS can create more interference when the number of SAR images is constant