Comparing GPS Receivers: A Field Study
نویسنده
چکیده
This paper compares the precision and accuracy of five current global positioning system (GPS) receivers—Trimble ProXR, Trimble GeoXT without WAAS, Trimble GeoXT with WAAS, Trimble GeoExplorer II, and an HP/Pharos receiver. Each of these receivers, along with other similar units, are frequently used today for data collection and integration within a geographic information system (GIS). To compare receivers, we conducted a field study of 15 established survey markers in the City of Pocatello, Idaho. The points were observed on ten different dates with equivalent settings (e.g., averaging and acceptable point dilution of precision—PDOP). Overall, the results indicate that the GeoXT is well suited where sub-meter accuracy is required while the Pharos receiver is a viable alternative for applications with accuracy requirements of +/10m and more.
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