A fast processing and distribution chain for ERS-1 Synthetic Aperture Radar (SAR) images was developed in Norway. Large quantities of ERS-1 images were used to assess the ship detection and wake imaging capability of ERS-1. Also, there is an ongoing campaign for detection of oil spill from ships along the Norwegian coast. Automatic detection and analysis of ships and ship wakes using the 30 m resolution SAR fast delivery product was demonstrated. For oil spill detection, 100 m resolution images of high radiometric quality are used. Ships above 120 m in length are generally seen in ERS-1 images under most weather conditions. Ships smaller than 100 m may sometimes become practically invisible in the SAR images because of the strong backscatter from the sea surface at some wind speeds. The main cause of this detection problem is the rather steep incidence angle of ERS-1. Ship wake signatures in ERS-1 images are very similar to those in Seasat images. The most frequent wake feature is the dark turbulent wake. Several confirmed observations of oil slicks have been reported. At low wind speed, natural surface slicks may in some cases be classified as oil slicks.
Ship Traffic Monitoring Using the ERS-1 SAR
1993
6 pages
Report
No indication
English
Ship traffic monitoring using the ERS-1 SAR
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