地球信息科学学报 ›› 2015, Vol. 17 ›› Issue (7): 774-782.doi: 10.3724/SP.J.1047.2015.00774

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全球六边形离散格网的几何最优化设计与空间度量

童晓冲1,2(), 贲进1, 谢金华3, 韩硕1   

  1. 1. 信息工程大学地理空间信息学院,郑州 450001
    2. 北京师范大学民政部/教育部减灾与应急管理研究院,北京 100875
    3. 国家测绘地理信息局卫星测绘应用中心,北京 101300
  • 收稿日期:2014-12-31 修回日期:2015-03-25 出版日期:2015-12-10 发布日期:2015-07-08
  • 作者简介:

    作者简介:童晓冲(1982-),男,博士,副教授,主要从事全球离散格网系统、摄影测量与机器视觉等方面的研究。E-mail: txchr@163.com

  • 基金资助:
    国家自然科学基金项目(41201392、41271391、40930104)

Geometry Optimization Design for Hexagonal Discrete Global Grid System and Spatial Measurement

TONG Xiaochong1,2,*(), BEN Jin1, XIE Jinhua3, HAN Shuo1   

  1. 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China
    2. Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs, Ministry of Education (Beijing Normal University), Beijing 100875, China
    3. Satellite Surveying and Mapping Applications Center, Beijing 101300, China;
  • Received:2014-12-31 Revised:2015-03-25 Online:2015-12-10 Published:2015-07-08
  • Contact: TONG Xiaochong E-mail:txchr@163.com
  • About author:

    *The author: SHEN Jingwei, E-mail:jingweigis@163.com

摘要:

全球离散格网系统(Discrete Global Grid System,DGGS)是一种新型的空间数据模型。它采用特定的方法进行地球表面的同构离散化,提供了一种无缝无叠的多尺度的全球格网结构。DGGS使用格网的地址编码运算代替传统的坐标计算来处理各种空间操作。本文以六边形DGGS为研究对象,提出了一种用于评价格网几何均匀性的新型最优化目标函数,设计了以启发式全局优化方法为核心,结合数值投影变换方法,构建六边形的DGGS。另外,针对DGGS目前的短板问题——空间度量,研究了DGGS上基于格网方法的面积度量、长度度量和角度度量,旨在发展一套全球六边形离散格网上的空间度量体系。

关键词: 全球离散格网, 六边形, 最优化, 空间度量

Abstract:

Discrete Global Grid System (DGGS) provides methods for constructing new spatial data models. It is a promising computer representation of global geo-referenced data sets based on regular, multi-resolution partitions of polyhedra. The object of our research is hexagonal DGGS, and we propose a new optimized target function to evaluating the geometrical properties of discrete global grids. Based on this function, this paper designs a new construction idea of hexagonal DGGS which combines the numerical projection transformation and heuristic global optimization. In addition, according to the weakness of DGGS: spatial measurement, this paper discusses the area measurement, the lineal measurement and the angle measurement based on the hexagonal DGGS. Its purpose is to develop a spatial measurement system for the hexagonal DGGS. In the end, the conclusions and the further studies of this paper are given.

Key words: discrete global grid system, hexagon, optimization, spatial measurement