Method and system for determining water vapor profile using GPS signals
US7739048B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2007 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Jun 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01W1/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for obtaining weather related information for a portion of the Earth's atmosphere between a predetermined surface portion of the Earth and an airborne object located over the predetermined surface portion, and operating at a known altitude, using position locating signals from a space vehicle. In one exemplary implementation the space vehicle transmits a first position locating signal. The first position locating signal is received by the airborne object directly from the space vehicle. A second position locating signal from the space vehicle is received by the airborne object after being reflected from the predetermined surface portion at a known angle. Phase information from the first and second position locating signals is used to determine a refractivity of the atmosphere between the predetermined surface portion and the airborne object. The refractivity is used to determine weather related information for the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.