溝谷特征點(diǎn)簇的空間結(jié)構(gòu)模型建立與分析研究
[Abstract]:The characteristic point cluster of the valley is the collection of a series of points which play an important role in controlling the spatial pattern and the development and evolution of the valley in the valley system of the watershed geomorphology. The set is not a simple combination of points, but an ordered set in space, with a tight organizational structure, close spatial relationship and complete attribute description. On the basis of determining the method of obtaining the feature points of the valley, it is of great theoretical and practical significance to systematically study the spatial structure model and the attribute description method of the cluster of feature points of the valley. Based on the theories of geomorphology, hydrology, system dynamics and computer graphics, this paper makes full use of GIS space analysis, DEM terrain analysis, fractal calculation, and combined with the means of cause analysis, morphological analysis and mathematical statistics. Computer simulation, pattern recognition and other technical methods are used to combine qualitative analysis of morphology with quantitative analysis of indicators, theoretical analysis and application verification, and high precision DEM is used as the source of information. On the basis of fully understanding the formation mechanism and morphological characteristics of the valley, the conceptual model of the feature point cluster of the valley is studied and perfected, and its composition categories are refined according to the space and attribute features of the feature points. On the basis of analyzing the advantages and disadvantages of the existing GIS data models, such as data storage, topological information record and so on, using the basic idea of object-oriented modeling, this paper studies the creation of spatial data model of valley feature point cluster which combines topological structure and attribute structure. Finally, a prototype system of valley feature point cluster is developed under the environment of C # ArcEngine, and the function of valley feature analysis based on valley feature point cluster is realized.
【學(xué)位授予單位】:西北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:P208;P931.1
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