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多源遥感信息融合及其在青藏铁路沿线活动断裂中的应用研究

Multi-source Remote Sensing Information Fusion and Its Application to Active Faults along Qinghai-Tibet Railway

【作者】 杨智翔

【导师】 苗放;

【作者基本信息】 成都理工大学 , 地图学与地理信息系统, 2007, 硕士

【副题名】以东大滩为例

【摘要】 多源遥感信息融合研究的目的是如何将不同传感器所获取的卫星图像信息来产生新的图像数据,以获取对同一目标的更为全面、客观及本质上的认识。多源遥感信息融合作为数据融合的一个重要分支,目前已经成为遥感技术应用领域的一个热点问题。本文结合现有的文献和研究成果的基础上,以高分辨率的全色波段和低分辨率的多光谱影像为数据源,引出了多源遥感信息融合的基本概念,分析了多源遥感信息融合的层次、模型、结构和技术特点。通过六种融合方法对东大滩Quick Bird不同分辨率的遥感影像进行了融合试验及成果分析,为遥感信息融合方法的选择提供科学依据。遥感技术的应用为地球科学研究开辟了一条崭新的途径,大大克服了以往视域的局限性。青藏铁路作为近年来国内外瞩目的重大建设项目,其修建和运营都面临着活动断裂这个技术难题。青藏高原地域广阔、人烟稀少、气候条件极其恶劣,野外勘测的工作难度很大,通过遥感技术可以获取青藏铁路沿线的活动断裂等信息。Quick Bird全色影像和Quick Bird(R3G2B1)多光谱真彩影像融合而成的0.61m的高空间分辨率影像可以直观地获取东大滩的活动断裂的几何特征及结构信息。利用3S技术、遥感图像数字处理技术、虚拟现实技术,通过遥感信息融合、高精度DEM生成和影像复合等工序,按照一定比例尺和飞行路线制作生成研究区的虚拟三维影像动画系列图。高精度的虚拟三维影像动画提供了可供反复使用的真实、客观、信息连续的宏观分析地面、地形景观影像,有助于提高研究区域信息提取的精度。

【Abstract】 The aim of the research of multi-source remote sensing image fusion is how toproduce new image from multiple source image data from different sensors and toobtain more comprehensive, external and intrinsical cognition of the same object. Asan important embranchment of data fusion, the research of multiple-source imagefusion has become a hot issue in the remote sensing field. Based on analyzing andsummarizing existing documents and research results, taking panchromatic images ofhigh spatial resolution and multi-spectral images of low spatial resolution as dataresource, this thesis draws forth the basic concept of multi-source remote sensinginformation fusion, analyzes the level, model, structure and the technologicalcharacter of multi-source remote sensing information fusion. Taking Dong Da TanQuick Bird images of different spatial resolution as the data resource, the fusionexperiment through six different fusion methods and the results analyses have beencarried on. It offers scientific evidence for choosing the remote sensing informationfusion method.The application of remote sensing provides a new approach for geoscience andhas greatly conquered the limitation of sight in the past. As a worldwide significantproject, the construction and operation of Qinghai-Tibet railway are confronted withthe technical problem of active faults. The bad conditions of Qinghai-Tibet Plateauincrease the difficulty of field survey, however, the technique of remote sensing canobtain the information of active rupture. The new image of 0.61m resolution fused byQuick Bird panchromatic image and multi-spectral true-color image(R3G2B1) canobtain the geometrical and structural characteristics of the active fault in Dong DaTan.Using 3S technology, digital processing technology of remote sensing and virtualreality comprehensively, the virtual three-dimensional animated series map of researching area can be generated according to some scales and flying routes by thedata fusion of remote sensing information, the generation of high-precision DEM,image integration and other procedures. High-precision virtual three-dimensionalanimated series map provide real, external and continuous terrain landscape images,which is helpful for the enhancement of information- extraction in the research area.

  • 【分类号】P237
  • 【被引频次】3
  • 【下载频次】332
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