| 多源地理空间数据差异的成因探讨 |
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| 引用本文： | 郭黎,崔铁军,陈应东.多源地理空间数据差异的成因探讨[J].测绘与空间地理信息,2009,32(1). |
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| 作者姓名： | 郭黎 崔铁军 陈应东 |
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| 作者单位： | 解放军信息工程大学测绘学院,河南,郑州,450052 |
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| 摘 要： | 随着地理信息的应用不断深入,人们对地理信息的需求也在不断变化,不可避免产生不同来源、格式、比例尺、多投影方式或大地坐标系统的地理空间数据.从空间实体或现象本身不确定性、人类认知表达能力的局限性、空间实体或现象观测的误差、计算机表达地理对象的局限性和空间数据操作产生的误差等方面详细分析了多源地理空间数据产生的客观和主观原因,这对GIS部门之间的数据共享和数据集成来说,具有重要应用价值.
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| 关 键 词： | 多源地理空间数据成因 不确定性 认知表达 观测误差 计算机表达 空间数据操作 |
Study for the Cause of Formation for Multi-geospatial Data |
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| GUO Li,CUI Tie-jun,CHEN Ying-dong.Study for the Cause of Formation for Multi-geospatial Data[J].Geomatics & Spatial Information Technology,2009,32(1). |
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| Authors: | GUO Li CUI Tie-jun CHEN Ying-dong |
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| Institution: | Institution of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China |
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| Abstract: | With the development of application of Geographical Information Systems,people need more GIS Information.It inevitably produces Geo-spatial data of different origin,format,scale,geodetic system and multi-projection mode data.This paper analyzes subjective and objective reason for producing multi-geospatial data from five aspects: uncertainty of geographic entity and phenomenon,limitations of people's cognition and expression,observation error of geographic entity,limitations for computer expressing geograph... |
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| Keywords: | the reason for multi-geospatial data uncertainty cognition and expression observation error computer expressing data manipulate |
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