嫦娥二号CCD影像DEM提取方法及月表地形分析初步研究

发布时间：2018-01-04 11:13

本文关键词：嫦娥二号CCD影像DEM提取方法及月表地形分析初步研究　出处：《成都理工大学》2013年硕士论文　论文类型：学位论文

更多相关文章： 嫦娥二号 SIFT DEM DTA 地形分析

【摘要】：月球是距离地球最近的行星,也是人类进行深空探测的第一站。用先进的仪器获取月表地形数据将极大地提高人类对月球的认知程度。作为月球探测的主要任务之一，获取月球表面高精度高程数据和地形信息，，对整个探月工程显得极为重要。本论文在数字月球平台的基础上，对研究区的嫦娥二号影像进行镶嵌，利用相关系数和SIFT算法对影像数据进行影像匹配，通过有理函数模型对影像进行立体定位，最终提取出月表区域高精度的DEM影像。在此基础上，利用DTA技术对月表地形进行初步的分析和研究，为以后对全月的DEM提取和地形分析提供了一种方法。通过对以上相关内容的研究，本文提出了以下两个研究创新点： 1.提出了一种综合相关系数和STFT算法嫦娥二号影像数据立体影像匹配提取DEM的流程和方法。 2.提出了一种基于DTA技术的月表地形特征因子提取技术和空间分析技术。在两个创新点的基础上，本文取得了以下三个研究成果： 1.完成了嫦娥影像数据的部分镶嵌工作，为建立数字月球平台提供了数据支持。 2.在分辨率高达7米的数字月球平台上提取了区域的DEM数据，为利用三线阵CCD数据提取DEM数据提供了参考和方法，通过生成区域的DEM影像，为生成三维数字月球奠定了基础。 3．对月表地形特征因子进行了提取和相关空间分析，提取了月表的山顶点、坡度、走向、平面曲率和地形起伏度，对月球表面地形进行了空间分析，研究月表的可视性。
[Abstract]:The moon is the first planet closest to the earth and is the first station for deep space exploration . Using advanced instruments to acquire lunar surface topography data will greatly improve the cognition of the moon . As one of the main tasks for lunar exploration , it is extremely important to acquire high - precision elevation data and terrain information on the surface of the moon . On the base of the digital lunar platform , the Chang ' e 2 image of the study area is embedded , the image data is matched by the correlation coefficient and SIFT algorithm , the image is stereoscopically positioned by the rational function model , and the high - precision DEM image in the monthly table area is finally extracted . On this basis , the monthly surface topography is analyzed and studied by using the DTA technique , and a method is provided for the DEM extraction and the terrain analysis of the whole month later . Through the research on the above related content , the following two research innovation points are proposed : 1 . A process and a method for extracting DEM from image data of Chang ' e two images with correlation coefficient and STFT algorithm are proposed . 2 . A new technique of feature extraction and spatial analysis based on DTA technique is presented . On the basis of two innovation points , the following three research results are obtained : 1 . The partial mosaic work of the Chang ' e image data is completed , and data support is provided for the establishment of the digital lunar platform . 2 . The DEM data of the area is extracted on a digital lunar platform with a resolution of up to 7 meters . In order to provide a reference and a method for extracting DEM data using the three - line CCD data , the DEM image of the area is generated , which lays the foundation for generating the three - dimensional digital moon . 3 . The terrain feature factor of the lunar surface is extracted and analyzed , and the peak point , slope , trend , plane curvature and topography of the monthly table are extracted , and the terrain of the lunar surface is analyzed and the visibility of the monthly table is studied .

【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P184.6

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