This project is actuated by the strong need for a low-cost-all-weather system that can produce high-resolution intensity images and height models. The objective of this project is to demonstrate the capabilities of interferometric SAR (INSAR) for both thematic mapping and volume assessment in urban and rural areas. A drawback of aerial photography and laser scanning, when used for DTM production purposes, is the dependence on favorable weather conditions. INSAR (Interferometric Synthetic Aperture Radar) is not hindered by cloud coverage and can also be operated at night. Although the INSAR technique will probably have its biggest market in developing countries, test sites in the Netherlands have been chosen to reduce the cost for the flight operation. Validation of the radar data took place by comparing it with other datasets (photogrammetry and laser) of the same region. It showed that INSAR is more accurate in rural areas; noise is of great influence in urban and suburban areas. When considering large areas, INSAR proved to be a good alternative to laser and photogrammetry. It can provide accurate information on terrain height, land-cover types and line features. Especially in tropical areas, where near permanent cloud coverage prevents the acquisition of aerial photography and optical satellite imagery, INSAR seems to be an ideal tool to acquire detailed height and land-cover information on a large scale.
Airborne INSAR Demonstration for Urban and Rural Applications
2000
52 pages
Report
Keine Angabe
Englisch
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