Noise in GPS coordinate time series
| Autor: | Ailin Mao, Timothy H. Dixon, Christopher G. A. Harrison |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Atmospheric Science
Soil Science Aquatic Science Oceanography Coordinate time Latitude symbols.namesake Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Astrophysics::Solar and Stellar Astrophysics Flicker noise Earth-Surface Processes Water Science and Technology Mathematics Ecology business.industry Paleontology Forestry White noise Geodesy Geophysics Space and Planetary Science Gaussian noise Assisted GPS Global Positioning System symbols business Noise (radio) |
| Zdroj: | Journal of Geophysical Research: Solid Earth. 104:2797-2816 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/1998jb900033 |
| Popis: | We assess the noise characteristics in time series of daily position estimates for 23 globally distributed Global Positioning System (GPS) stations with 3 years of data, using spectral analysis and Maximum Likelihood Estimation. A combination of white noise and flicker noise appears to be the best model for the noise characteristics of all three position components. Both white and flicker noise amplitudes are smallest in the north component and largest in the vertical component. The white noise part of the vertical component is higher for tropical stations (+23 o latitude) compared to midlatitude stations. Velocity error in a GPS coordinate time series may be underestimated by factors of 5-11 if a pure white noise model is assumed. |
| Databáze: | OpenAIRE |
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