测绘通报 ›› 2017, Vol. 0 ›› Issue (1): 130-133,138.doi: 10.13474/j.cnki.11-2246.2017.0029

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地形分析中栅格中间层构建的尺度适应性

张立朝1, 赵鹏2, 张合朝3   

  1. 1. 河南省测绘地理信息局, 河南 郑州 450003;
    2. 信息工程大学地理空间信息学院, 河南 郑州 450052;
    3. 河南省科源测绘中心, 河南 郑州 450003
  • 收稿日期:2016-03-03 出版日期:2017-01-25 发布日期:2017-02-06
  • 作者简介:张立朝(1981-),男,工程师,主要从事地理国情监测及地理信息服务。E-mail:13838205603@163.com
  • 基金资助:
    国家自然科学基金(41201390);矿山空间信息技术国家测绘地理信息局重点实验室开放基金(KLM201411);信息工程大学地理空间信息学院自立科研课题(Y1106)

Scale Adaptability of Raster Intermediate Layer in Terrain Analysis

ZHANG Lichao1, ZHAO Peng2, ZHANG Hechao3   

  1. 1. Information Center of Henan Administration of Surveying, Mapping and Geoinformation, Zhengzhou 450003, China;
    2. Institute of Geospatial Information, Information Engineering University, Zhengzhou 450052, China;
    3. Keyuan Surveying and Mapping Center of Henan Province, Zhengzhou 450003, China
  • Received:2016-03-03 Online:2017-01-25 Published:2017-02-06

摘要: 栅格中间层是指在地形分析中由DEM、DSM、矢量数据等原始数据,经过一系列栅格运算获取且可以重用的基础栅格层。本文系统研究了栅格中间层构建的尺度适应性,定义了范围、比例尺、分辨率和分析4种尺度,并确定了范围、比例尺和分辨率尺度的确定原则;特别对于分析尺度,通过地貌因子计算进行了切线、剖面曲率栅格层分析尺度适宜性试验,分析了曲率计算中适宜的算法和分析尺度,保证了地形基础因子栅格中间层具有满足分析要求的数值精度和匹配地形起伏的形态精度。

关键词: 栅格中间层, 尺度适应性, 地形分析, 数值精度, 形态精度

Abstract: Raster intermediate layer is fundamental and reusable raster layer for terrain analysis created by the DEM, DSM, vector data, which is obtained through a series of raster calculation. The scale adaptability of raster intermediate layer is studied. The range, scale, resolution, analysis are defined. The principle of range, scale, resolution are determined. Particularly, the paper takes the experiment of scale adaptability of the tangent, curvature raster intermediate layer aiming at the analysis scale, and puts forward the adaptive algorithm and analysis scale. The result shows that raster intermediate layer of terrain foundation factors created from this solution meets the need of numerical precision and morphology precision for terrain analysis.

Key words: raster intermediate layer, scale adaptability, terrain analysis, numerical precision, morphology precision

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