| EPSRC Reference: |
GR/M86156/01 |
| Title: |
CORRECTION OF TROPOSPHERIC ARTEFACTS IN SYNTHETIC APERTURE RADAR INTERFEROGRAMS USING GPS OBSERVATIONS |
| Principal Investigator: |
Clarke, Professor P |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Civil Engineering and Geosciences |
| Organisation: |
Newcastle University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
13 September 1999 |
Ends: |
12 September 2002 |
Value (£): |
52,149
|
| EPSRC Research Topic Classifications: |
| Digital Signal Processing |
|
|
| EPSRC Industrial Sector Classifications: |
| Communications |
Construction |
| Energy |
Information Technologies |
| Water |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
Synthetic Aperture Radar (SAR) phase interferograms are increasingly used for deformation monitoring and digital elevation model (DEM) generation. Because current and proposed future satellite-based SAR systems provide single-frequency microwave radar snapshots of a wide area, they are vulnerable to atmospheric signal propagation errors, in particular a non-dispersive delay proportional to tropospheric water vapour content. In contrast, Global Positioning System (GPS) signals are recorded at individual sites on two similar microwave frequencies over a period of time, allowing the tropospheric propagation delays to be estimated and eliminated. We will improve existing GPS processing software and use it to produce regional models of tropospheric water vapour content around selected permanently-recording and temporary GPS sites. We will then use these models to correct biases in contemporaneous SAR images of these areas. The locations chosen will include test sites undergoing little or no deformation, and sites of natural hazards where deformation monitoring is taking place using other techniques for ground truth. Our results will benefit users of SAR-derived DEMs such as the telecommunications and flood warning sectors, and SAR users monitoring natural and engineering hazards such as ground subsidence, landslips, earthquakes and volcanoes. Potential benefits also exist for meteorology.
|
|
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.ncl.ac.uk |