In January 2005, FOI (Swedish Defense Research Agency) and Ericsson Microwave Systems mapped storm-damaged areas in southern Sweden using military airborne radar technology mounted in a test aircraft operated by FMV (Swedish Defense Materiel Agency). The trial shows that the technology can cover large land areas as well as identify individual trees including those damaged by winds.
"The results are very promising," says Lars Ulander at FOI. "This technology enables us to get an overview and detailed information which neither aerial photography nor satellite images can provide. This is needed in order to find small and dispersed wind-felled areas, that is, where only a minor portion of the trees have been affected. Whats more, you get good radar images also under poor weather conditions."
The CARABAS-II synthetic aperture radar was used to map two areas in southern Sweden: Växjö-Ljungby in Småland and Tönnersjöheden in Halland which were both severely damaged by a hurricane on 8 January 2005.
Åsa Ivarsson | alfa
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