| 球面离散网格在椭球面上的扩展及变形分析 |
| |
| 引用本文： | 贲进,童晓冲,张永生,张衡.球面离散网格在椭球面上的扩展及变形分析[J].测绘科学,2006,31(4):25-27,59. |
| |
| 作者姓名： | 贲进 童晓冲 张永生 张衡 |
| |
| 作者单位： | 解放军信息工程大学测绘学院,郑州,450052 |
| |
| 基金项目： | 国家863计划项目(2003AA783060-3)，测绘学院基金项目(Y0503) |
| |
| 摘 要： | 球面离散网格数据模型是管理海量数据的有效途径之一,现有网格建立的基础是球面而不是椭球面,因而不能满足地理空间数据高精度应用的需要。围绕这一问题,建立了球面到椭球面的几种对应关系,从而将球面网格投影到椭球面上;结合实验分析了网格的最大最小边长比、最大最小夹角比和最大最小面积比,从而为该方法的实际应用奠定了基础。
|
| 关 键 词： | 球面离散网格 椭球面 投影 变形 |
| 文章编号： | 1009-2307(2006)04-0025-04 |
| 修稿时间： | 2005年8月5日 |
Projection of spherical grid on ellipsoid and analysis of its de formation |
| |
| BEN Jin,TONG Xiao-chong,ZHANG Yong-sheng,ZHANG Heng.Projection of spherical grid on ellipsoid and analysis of its de formation[J].Science of Surveying and Mapping,2006,31(4):25-27,59. |
| |
| Authors: | BEN Jin TONG Xiao-chong ZHANG Yong-sheng ZHANG Heng |
| |
| Abstract: | Spherical discrete grid data model is the essential way of massive data management.Instead of ellipsoid,almost all kinds of grids are based on sphere at present.And they do not meet the high precision need of many applications.To solve this problem,the paper establishes several corresponding relationships between sphere space and ellipsoid space by which the grids are projected from the formal to the latter.Also,the paper analyses the distributions and rules of deformation with the result of experiment. |
| |
| Keywords: | spherical discrete grid ellipsoid projection deformation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
