Disaster information acquisition system using multi-platform remote sensing technology

摘要

[ABSTRACT] Japan is not only a country with frequent earthquakes, but also is located in the typhoon-prone zone with one of the most frequent severe rain storms and sediment disasters in the world. Despite those natural disasters, it is difficult to determine the extent of the disaster damage quickly and extensively. Facing this problem, it is necessary and effective to make the most use of remote sensing technology of satellite and airborne platform. Because of this situation, we are developing a disaster information service based on satellite and airborne sensors. In this system, SAR (Synthetic Aperture Radar) satellite sensor acquires images of the areas of interest during normal phase, and they can be put in order as ready-to-use reference data. When a disaster happens，the quickest way of data acquisition, whether satellite or airplane, is to be done. In case of SAR satellite sensor, it is possible to extract changed areas between images acquired before and after the disaster. If more detail information is demanded, images acquired by airborne sensors are analyzed for mapping disaster-affected areas and will be provided. Moreover, acquiring images regularly after disaster, it is possible to monitor recovery and restoration status of the damaged areas.