insar数据后处理研究缺失数据拟合大学学位论文.doc

二 ○ 一 ○届 毕 业 论 文 InSAR数据后处理研究— 缺失数据拟合 学 院: 地质工程与测绘 专 业：地理信息系统 姓 名：XXX 学 号：XXX 指导教师：XXX 完成时间：2010.06.04 二〇一〇年六月摘 要 我国的地面沉降现象一直比较严重。地面沉降破坏建筑物和生产设施、损坏地下线路设施等，给人们的生产、生活带来严重的影响。基于地面沉降对环境及经济建设破坏的严重性，当前许多地区及城市已将地面沉降监测作为防灾减害的一项重要工作。近年来大量的研究和实践表明， InSAR（合成孔径雷达干涉测量）技术可以高精度监测地表的微小地表形变，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优势，能够有效弥补水准测量和GPS测量空间分辨率不足的问题，是目前沉降灾害监测的一种重要技术手段。 然而，InSAR监测手段也有自己的不足，InSAR技术虽然具有很高的空间分辨率，但是雷达卫星因其固有的运行周期，ABSTRACT Serious land subsidence phenomenon happen in china for a long time. Subsidence damage to buildings and production facilities, damage to underground line facilities to the peoples production and life seriously affected. Based on land subsidence damage to the environment and the gravity of economic development, the current number of regions and cities have land subsidence monitoring harm reduction as an important prevention work. In recent years, extensive research and practice shows that, InSAR (Interferometric Synthetic Aperture Radar) technology to high-precision monitoring of the surface of the small surface deformation, all-weather, all-time, wide coverage, high degree of automation and high precision ground deformation monitoring of the advantages of effective to make up for leveling and GPS measurements the problem of inadequate spatial resolution, is the subsidence is an important side lesson plan techniques. However, InSAR monitoring tools also have their own deficiencies, InSAR technology, while high spatial resolution, but the operation of the radar satellite because of its inherent cycle can not meet monitoring requirements. In addition, the time lost coherence or mountain top and bottom inverted SAR image of the interferogram so easily lead to data loss occurs, and thus difficult to achieve regional monitoring purposes. In this paper, the phenomenon of missing data, research is based on polynomial fitting and multi-faceted function fitting of the missing data fitting method, focusing on the multi-