DGPS Applications

Science Applications

The DGPS system provides a portable, easy to operate, meter-level survey system for scientists working at McMurdo Station, in McMurdo Sound, and in Taylor Valley. The available precision is well suited for applications such as mapping dive holes, soil sample locations, instrument locations, etc. The RTK capability provides centimeter level precision in the vicinity McMurdo Station for applications that previously required post-processing of data.

The Trimble GeoExplorer receiver has significant GIS capabilities. They are capable of recording attribute information along with position data, which allows for accurate digitization of features such as roads, cracks, buildings, ice holes, instrument locations, area boundaries, etc. The data can be output as standard GIS files, both for use with the Trimble Pathfinder Office GIS software available from UNAVCO, or for use with common GIS software including ArcView and ArcInfo.

Operational Applications

The DGPS system can be used in many applications to support McMurdo operations. The correction broadcast is available for anyone to receive, provided they use compatible equipment.

Operational applications include:
• Annual ice runway layout
• Annual ice shelf survey
• Surveys of Ice, Williams Field, and Pegasus runways
• Precise drilling hole locations on sea ice
• GIS data collection
• General survey applications

Last modified Tuesday, 09-May-2006 18:14:00 UTC

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