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| 空间编码QuaPA方法的改进与实验 | |
| 引用本文： | 吴立新,殷倩,蔡振锋,车德福.空间编码QuaPA方法的改进与实验[J].地理与地理信息科学,2007,23(2):8-11. |
| 作者姓名： | 吴立新 殷倩 蔡振锋 车德福 |
| 作者单位： | 1. 东北大学3S与数字矿山研究所,辽宁,沈阳,110004;中国矿业大学3S与沉陷工程研究所,北京,100083 2. 中国矿业大学3S与沉陷工程研究所,北京,100083 3. 东北大学3S与数字矿山研究所,辽宁,沈阳,110004 |
| 基金项目： | 国家杰出青年基金项目(50525414)，国家自然科学基金项目(40571137)，国家863计划项目(2006AA12Z216)，北京市自然科学基金重点项目(4041005) |
| 摘 要： | 空间编码是GIS与全球空间数据组织与共享的重要基础。针对QuaPA编码方法进行三维与全球空间编码时存在数据冗余和象限二义性问题,采用双Morton编码和象限标识后置方式进行改进,提出QuaPA 方法。介绍QuaPA 编码步骤及其反演原理,并以中国及邻区地表及地下10 km2、0 km以浅的三维球壳空间网格划分为例,分别进行了球壳网格的QuaPA和QuaPA 编码实验。实验表明,QuaPA 编码解决了象限二义性问题,缩短了编码长度,节省了存储空间。 |
| 关 键 词： | 空间编码 空间实体 球壳网格 数据组织 QuaPA QuaPA |
| 文章编号： | 1672-0504(2007)02-0008-04 |
| 修稿时间： | 2007年3月1日 |
Modification to and Experiments on QuaPA Spatial Coding Method |
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| WU Li-xin,YIN Qian,CAI Zhen-feng,CHE De-fu.Modification to and Experiments on QuaPA Spatial Coding Method[J].Geography and Geo-Information Science,2007,23(2):8-11. | |
| Authors: | WU Li-xin YIN Qian CAI Zhen-feng CHE De-fu |
| Abstract: | Spatial coding is an important foundation of GIS and global spatial data organization and sharing applications.For the problem of data redundancy and quadrant ambiguity as QuaPA coding method being applied for the 3D and global spatial coding,double-Morton mode and rear quadrant-label are used for modification to QuaPA,and a modified coding method named as QuaPA is proposed.This paper introduced the coding procedures of the principal code of QuaPA and the principles of spatial position reversion based on QuaPA code.With the 3D spherical shell-grid of China and it adjacent regions respectively above depth of 10 km and 20 km be the cases,the 3D spherical shell-grid coding is conducted with both QuaPA and QuaPA methods.It was proved that the quadrant ambiguity has been solved,the code length gets shorter and the storage space is saved. |
| Keywords: | spatial coding spatial entity spherical shell-grid data organization QuaPA QuaPA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |