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基于规则格网的数字高程模型和基于不规则三角网的数字高程模型是目前数字高程模型的2种主要结构。研究了基于规则格网数字高程模型(DEM)的建模原理和方法,分析了建立DEM的精度影响,并建立了模型,实现了算法。结果表明,逐点内插法十分灵活,内插效率较高,精度较高。 更多还原

【Abstract】 The digital elevation model based on rules grid and the irregular triangle network digital elevation model are two kinds of main structure.Based on rules grid digital elevation model(DEM) modeling principle and method,this paper analyzed the influence,and established DEM precision established model,realized the algorithm.The results showed that point-by-point admixture-frequency syntheses was very flexible,high efficiency,interpolated accuracy 更多还原