Global Positioning System Measurements for Crustal Deformation: Precision and Accuracy
- 16 June 1989
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 244 (4910) , 1337-1340
- https://doi.org/10.1126/science.244.4910.1337
Abstract
Analysis of 27 repeated observations of Global Positioning System (GPS) position-difference vectors, up to 11 kilometers in length, indicates that the standard deviation of the measurements is 4 millimeters for the north component, 6 millimeters for the east component, and 10 to 20 millimeters for the vertical component. The uncertainty grows slowly with increasing vector length. At 225 kilometers, the standard deviation of the measurement is 6, 11, and 40 millimeters for the north, east, and up components, respectively. Measurements with GPS and Geodolite, an electromagnetic distance-measuring system, over distances of 10 to 40 kilometers agree within 0.2 part per million. Measurements with GPS and very long baseline interferometry of the 225-kilometer vector agree within 0.05 part per million.Keywords
This publication has 5 references indexed in Scilit:
- On the effect of ionospheric delay on geodetic relative GPS positioningmanuscripta geodaetica, 1988
- Long‐term fault creep observations in central CaliforniaJournal of Geophysical Research, 1982
- Strain accumulation rates in the western United States between 1970 and 1978Journal of Geophysical Research, 1979
- GPS Signal Structure and Performance CharacteristicsNAVIGATION: Journal of the Institute of Navigation, 1978
- Precision of geodolite distance measurements for determining fault movementsJournal of Geophysical Research, 1973