Title :
Flood disaster monitoring with ALOS/PALSAR observation
Author :
Kawano, Noriyuki ; Shimada, Masanobu
Author_Institution :
Earth Obs. Res. Center, Japan Aerosp. Exploration Agency (EORC/JAXA), Tsukuba, Japan
Abstract :
We investigate an effective algorithm to identify flood-inundated area with ALOS/PALSAR observations. Radar cross section from water surface is generally smaller than that from ground surface without water, which derives larger differences of radar cross section in flood-inundated area because there is no water in this area before disaster. Variances of differences in 3×3 pixels are also enough to identify flood-inundated area, and more effective algorithm to identify flood-inundated area will be obtained by taking radar cross section differences and variances of differences into account.
Keywords :
disasters; floods; hydrological techniques; radar cross-sections; remote sensing by radar; spaceborne radar; synthetic aperture radar; ALOS; Advanced Land Observing Satellite; Gifu prefecture; Japan; PALSAR; Phased array type L-band Synthetic Aperture Radar; Seino area; flood disaster monitoring; flood-inundated area; ground surface; radar cross section; water surface; Aerospace accidents; Brightness; Earth; Floods; Geographic Information Systems; L-band; Monitoring; Phased arrays; Radar cross section; Surface texture; ALOS; PALSAR;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417458
