Observed discrepancy between geodolite and GPS distance measurements
Journal of Geophysical Research B: Solid Earth
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Abstract
Comparison of contemporaneous measurements of 84 distances in the range of 10 to 50 km by both Global Positioning System (GPS) and Geodolite (an electro-optical distance-measuring instrument) indicates that the Geodolite measurements are systematically longer by 0.283 ± 0.100 parts per million of the measured distance. Quoted uncertainty is 1 standard deviation. This amounts to 11.3 ± 4.0 mm at 40 km, which is near the maximum Geodolite range. The systematic difference is within the random uncertainty of an individual GPS-Geodolite comparison and was detected only from an analysis of a large number (84) of such comparisons. The source of the systematic difference has not been identified.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Observed discrepancy between geodolite and GPS distance measurements |
| Series title | Journal of Geophysical Research B: Solid Earth |
| DOI | 10.1029/96JB02288 |
| Volume | 101 |
| Issue | B11 |
| Publication Date | November 10, 1996 |
| Year Published | 1996 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Volcano Hazards Program |
| Description | 6 p. |
| First page | 25547 |
| Last page | 25552 |