TOWARDS OPERATIONAL FLOOD MAPPING WITH SATELLITE SAR

摘要

Space-borne SAR sensors are of special interest for mappingrnflood extent due to the possibility to acquire imagesrnin all weather conditions. In this article we review thernSAR part of an operational flood mapping service. Anrnoperational service requires fully automatic methods thatrnare able to process any available SAR data in near-realrntime. Mapping flood with SAR requires different approachesrnfor open, forested and urban areas. We considerrnand demonstrate algorithms for the different cases. Further,rnwe review factors that makes flood detection withrnSAR challenging, and how these cases can be handledrnwith the use of auxiliary data.