Transcription of Technical Considerations of Using Datum and Map …
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1 Implications of Geodesy, Spatial Reference Systems, and Map Projections in Processing, Conversion, Integration, and Management of GIS Data Larry ZHANG eMap Div., Integrated Solution Services Dept, Saudi Aramco C-121 West Park #1, Dhahran 31311, Saudi Arabia Phone: (966 3) 874-8187; Fax: (966 3) 874-8339 Email: Copyright Saudi Aramco 2005 Keywords: geodesy, Datum , coordinate system, map projection, engineering surveying, CAD drawing, GIS, RS, GPS measurements, data processing, conversion, integration, management Abstract Geospatial datasets are collected from a huge variety of sources, including field surveying, spatial-enabled CAD drawings, GIS; GPS measurements, satellite sensors or airborne missions, with an equally large variety in quality, accessibility, confidence, and references.
2 exists, which can cause unreliable spatial analysis, even totally misplaced decisions. This paper focuses on the practical considerations of correctly using datum and
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