基于D-InSAR技术监测矿区地面沉降变形的研究

发布时间：2018-01-22 08:57

本文关键词： D-InSAR 轨道误差煤矿沉陷形变监测　出处：《长安大学》2013年硕士论文　论文类型：学位论文

【摘要】：InSAR （Synthetic Aperture Radar Interferometry，合成孔径雷达干涉测量）及D-InSAR技术是近年来发展比较迅速的微波遥感技术，它具有全天候、全天时、覆盖面广、高度自动化和高精度监测地表变形的能力，已成为具有很大潜力的空间对地观测新技术。根据差分干涉原理，D-InSAR技术用于地面形变监测可以获得地表分辨单元的微小形变，理论上可达到毫米级精度。该技术用于煤矿沉陷监测，受到地面沉陷量级大、频繁的地面活动、严重的时间去相干等因素的影响，如何有效地利用获取到的干涉信息对煤矿进行不同方面沉陷监测是一个亟待解决的问题。基于双轨法D-InSAR技术对矿区地面沉降进行详细监测与分析。以兖州州矿区为实验区，对获取的矿区5景数据进行干涉对优化选取；形成了实用化的适合于矿区沉降监测的D-InSAR数据处理流程，基于该数据处理流程对优化干涉对进行干涉处理，获取了兖州矿区的地面沉结果并进行了分析与解译，，分析了矿区沉降的时空变化趋势；采用矿区地面沉降实测数据，对InSAR沉降监测结果进行精度验证与分析。实验证明采用L波段的雷达数据进行双轨法差分干涉测量是进行矿区地面沉降监测的最佳手段之一。
[Abstract]:InSAR synthetic Aperture Radar Interferometry. Synthetic Aperture Radar interferometry (SAR) and D-InSAR are the rapid development of microwave remote sensing technology in recent years, it has all-weather, all-day, wide coverage. The ability to monitor surface deformation with high automation and precision has become a new space-to-earth observation technology with great potential. D-InSAR can be used to monitor the ground deformation and obtain the small deformation of the surface resolution unit, which can achieve millimeter precision in theory. This technology is used in the coal mine subsidence monitoring, and it is subject to large ground subsidence. Because of frequent ground activity and serious time decoherence, how to effectively use the interference information to monitor the subsidence in different aspects of coal mines is an urgent problem to be solved. Based on the dual-track D-InSAR technique, the ground subsidence of the mining area is monitored and analyzed in detail. Taking Yanzhou mining area as the experimental area, the five scene data obtained from the mining area are selected by interference optimization. A practical D-InSAR data processing flow is formed, which is suitable for mining subsidence monitoring. Based on the data processing flow, the optimal interference pair is processed. The results of ground subsidence in Yanzhou mining area are obtained and analyzed and interpreted, and the temporal and spatial trends of subsidence in Yanzhou mining area are analyzed. The measured data of land subsidence in mining area are used. The accuracy of InSAR subsidence monitoring results is verified and analyzed. It is proved by experiments that using L band radar data for differential interferometry is one of the best methods for monitoring land subsidence in mining area.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD173.4

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