基于WGS-84椭球面的退化四叉树经纬线格网剖分

针对数字地球的发展和解决全球问题的需求,给出了一种基于WGS-84椭球面的全球离散格网剖分方法——退化四叉树经纬线格网;分析了格网剖分的特点,明确了格网单元行列定义和经纬度坐标;计算出不同剖分层次格网单元面积、边长的变化情况并与基于正球面的剖分进行了对比。结果表明该格网系统具有粒度相对均匀性、层次嵌套性、方向一致性、地理条带性和对称性、广泛数据兼容性等许多优良特征,对构建全球地理信息系统具有一定的实用价值。...

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Bibliographic Details
Published inCe hui xue bao Vol. 45; no. 12; pp. 32 - 39
Main Author 胡佰林 王春波 赵学胜 崔马军
Format Journal Article
LanguageChinese
English
Published Beijing Surveying and Mapping Press 01.12.2016
河南理工大学测绘学院,河南焦作,454003%中国矿业大学(北京)地球科学与测绘工程学院,北京,100083%扬州环境资源职业技术学院,江苏扬州,225127
Subjects
Coordinates
Latitude
Longitude
WGS-84椭球面
全球离散格网
层次剖分
格网
退化四叉树经纬线格网
WGS-84 ellipsoidal facet
hierarchical subdivision
层次剖分
degenerate quadtree latitude/longitude grid(DQLLG)
grid
格网
discrete global grid(DGG)
全球离散格网
退化四叉树经纬线格网
WGS-84椭球面
Online AccessGet full text
ISSN1001-1595
1001-1595
DOI10.11947/j.AGCS.2016.F004

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Summary:针对数字地球的发展和解决全球问题的需求,给出了一种基于WGS-84椭球面的全球离散格网剖分方法——退化四叉树经纬线格网;分析了格网剖分的特点,明确了格网单元行列定义和经纬度坐标;计算出不同剖分层次格网单元面积、边长的变化情况并与基于正球面的剖分进行了对比。结果表明该格网系统具有粒度相对均匀性、层次嵌套性、方向一致性、地理条带性和对称性、广泛数据兼容性等许多优良特征,对构建全球地理信息系统具有一定的实用价值。
Bibliography:11-2089/P
degenerate quadtree latitude/longitude grid（DQLLG）; WGS-84ellipsoidal facet; discrete global grid（DGG）; grid; hierarchical subdivision
For the needs of digital earth development and solving many global problems,a new discrete global grid system—DQLLG（degenerate quadtree latitude/longitude grid）was put forward,which was based on WGS-84 ellipsoidal facet.The hierarchical subdivision method,characteristics and grid column/row coordinate system were detailed.The Latitude/Longitude coordinate,area and side length of multi-resolution meshes on different subdivision levels were calculated.Then the changes of mesh areas and side lengths were analyzed and compared that with spherical DQLLG.The research indicates that the DQLLG had many excellent features：uniformity,hierarchy,consistency of direction,extensive data compatibility and so on.It has certain practicality for Global GIS in the future.
HU Bailin1 ,WANG Chunbo1 ,ZHAO Xuesheng2 ,CUl Majun3 （1. School of Surveying and Mapping, Henan Polytechnic University
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1001-1595
1001-1595
DOI:10.11947/j.AGCS.2016.F004