| EPSRC Reference: |
GR/L99081/01 |
| Title: |
PREDICTION OF RADIO PROPAGATION FACTORS FROM TROPOSPHERIC WATER VAPOUR MEASUREMENTS USING GPS |
| Principal Investigator: |
Watson, Professor P |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Electronic and Electrical Engineering |
| Organisation: |
University of Bath |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1998 |
Ends: |
30 September 2001 |
Value (£): |
249,560
|
| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
|
|
| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
New techniques with potential for characterising the topospheric vertical radio refractivity profile are to be explored, specifically using radio-delay-tomography on signals from the satellites of the Global positioning System (GPS), combined with low-angle delay measurements. Also the long term accuracy and availability with which zenith integrated water vapour content, statistics of scintillation intensity and millimetre-wave path loss can be estimated using GPS, will be assessed. Comparisons will be made against a 93 ghz radiometer at York (combined with rain and cloud detectors) and 20, 30 and 50 Ghz radiometers plus a beacon receiver at RAL. Diagnostic information on causes of error will also be in evidence from the tomographic studies. The idea of GPS for tropospheric water vapour measurement arose as a result of a nuisance factor in very precise positioning studies. Short-term, but promising measurements, were demonstrated in 1995 but the technique is yet to be established in terms of accuracy and availability. So far as we are aware this is the first implementation of ground-based tomography for vertical profiling of water vapour and the first study attempting, by taking additional GPS measurements, to extend the technique to permit prediction of radio refractivity profiles.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.bath.ac.uk |