Obtaining single path phase delays from GPS double differences
Journal Article
·
· Geophysical Research Letters
We describe a method for obtaining singlepath phase delays from GPS double differences. The resulting “zero differences” (ZDs) can be used for remote sensing of atmospheric water vapor. The method is demonstrated by simulating and observing atmospheric delay gradients, and by comparing ZDs with pointed radiometer observations of integrated water vapor along GPS ray paths. In-situ GPS antenna phase center and multipath effects are mapped in ZD residuals for a specific site and network. We conclude that ZDs derived from GPS network data show promise for real time sensing of water vapor for use in meteorological modeling and forecasting.
- Research Organization:
- University Corporation for Atmospheric Research, Boulder CO
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- FG02-02ER63327
- OSTI ID:
- 898985
- Report Number(s):
- DOE/ER/63327-2
- Journal Information:
- Geophysical Research Letters, Vol. 27
- Country of Publication:
- United States
- Language:
- English
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