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Differential Global Positioning System: Potential for Geographical Information System Database Management

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  • P Treitz
  • L Elliot
  • P Howarth

Abstract

The primary problem for managers of digital topographic data is maintaining an accurate and up-to-date database. Traditional spatial-data-collection techniques and mapping procedures are expensive and, as a result, occur infrequently. However, the NAVSTAR Global Positioning System (GPS) now provides for the collection of timely, cost-effective spatial information. In this study, differential GPS data were collected for an area of rapid rural-to-urban land-use change by using low-cost GPS receivers in static and kinematic modes. These data were then processed for input to a geographic information system and assessed for their positional accuracy. It was found that GPS data collected in static mode and differentially corrected possessed a circular map accuracy standard (CMAS) of 3.62 m. These accuracies meet the requirements of many large-scale and medium-scale mapping programs.

Suggested Citation

  • P Treitz & L Elliot & P Howarth, 1993. "Differential Global Positioning System: Potential for Geographical Information System Database Management," Environment and Planning A, , vol. 25(6), pages 883-898, June.
    • Handle: RePEc:sae:envira:v:25:y:1993:i:6:p:883-898
    DOI: 10.1068/a250883
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