Details
| Original language | English |
|---|---|
| Pages (from-to) | 47-57 |
| Number of pages | 11 |
| Journal | Journal of geodesy |
| Volume | 82 |
| Issue number | 1 |
| Publication status | Published - 20 Apr 2007 |
Abstract
Turbulent irregularities in the lower atmosphere cause physical correlations between Global Positioning System (GPS) carrier-phase measurements. Based on turbulence theory, a variance-covariance model is developed in this paper that reflects these correlations. The main result shows that the obtained fully-populated variance-covariance matrices depend not only on the satellite-station geometry, but also on the prevailing atmospheric conditions, which are parameterised by, e.g., the von Karman spectrum of refractivity fluctuations and the wind velocity vector. It is shown that the amount of the correlation between two GPS carrier-phase observations is inversely related to the separation distance of the corresponding ray paths through the turbulent atmosphere. Furthermore, the wind velocity and direction play a key role in the correlation.
Keywords
- Atmospheric refractivity fluctuations, GPS, Physical correlations, Turbulence theory
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
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In: Journal of geodesy, Vol. 82, No. 1, 20.04.2007, p. 47-57.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Atmospheric turbulence theory applied to GPS carrier-phase data
AU - Schön, Steffen
AU - Brunner, Fritz K.
PY - 2007/4/20
Y1 - 2007/4/20
N2 - Turbulent irregularities in the lower atmosphere cause physical correlations between Global Positioning System (GPS) carrier-phase measurements. Based on turbulence theory, a variance-covariance model is developed in this paper that reflects these correlations. The main result shows that the obtained fully-populated variance-covariance matrices depend not only on the satellite-station geometry, but also on the prevailing atmospheric conditions, which are parameterised by, e.g., the von Karman spectrum of refractivity fluctuations and the wind velocity vector. It is shown that the amount of the correlation between two GPS carrier-phase observations is inversely related to the separation distance of the corresponding ray paths through the turbulent atmosphere. Furthermore, the wind velocity and direction play a key role in the correlation.
AB - Turbulent irregularities in the lower atmosphere cause physical correlations between Global Positioning System (GPS) carrier-phase measurements. Based on turbulence theory, a variance-covariance model is developed in this paper that reflects these correlations. The main result shows that the obtained fully-populated variance-covariance matrices depend not only on the satellite-station geometry, but also on the prevailing atmospheric conditions, which are parameterised by, e.g., the von Karman spectrum of refractivity fluctuations and the wind velocity vector. It is shown that the amount of the correlation between two GPS carrier-phase observations is inversely related to the separation distance of the corresponding ray paths through the turbulent atmosphere. Furthermore, the wind velocity and direction play a key role in the correlation.
KW - Atmospheric refractivity fluctuations
KW - GPS
KW - Physical correlations
KW - Turbulence theory
UR - http://www.scopus.com/inward/record.url?scp=37749010717&partnerID=8YFLogxK
U2 - 10.1007/s00190-007-0156-y
DO - 10.1007/s00190-007-0156-y
M3 - Article
AN - SCOPUS:37749010717
VL - 82
SP - 47
EP - 57
JO - Journal of geodesy
JF - Journal of geodesy
SN - 0949-7714
IS - 1
ER -