Flood extent mapping using dual-polarimetric sentinel-1 synthetic aperture Radar imagery

M. J. Jo, B. Osmanoglu, B. Zhang, S. Wdowinski

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Rapid generation of synthetic aperture radar (SAR) based flood extent maps provide valuable data in disaster response efforts thanks to the cloud penetrating ability of microwaves. We present a method using dual-polarimetric SAR imagery acquired on Sentinel-1a/b satellites. A false-colour map is generated using pre- and post-disaster imagery, allowing operators to distinguish between existing standing water pre-flooding, and recently flooded areas. The method works best in areas of standing water and provides mixed results in urban areas. A flood depth map is also estimated by using an external DEM. We will present the methodology, it's estimated accuracy as well as investigations into improving the response in urban areas.

Original languageEnglish (US)
Pages (from-to)711-713
Number of pages3
JournalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Volume42
Issue number3
DOIs
StatePublished - Apr 30 2018
Event2018 ISPRS TC III Mid-Term Symposium on Developments, Technologies and Applications in Remote Sensing - Beijing, China
Duration: May 7 2018May 10 2018

Keywords

  • Flood
  • Harvey
  • Polarimetry
  • Radar
  • SAR
  • Sentinel-1

ASJC Scopus subject areas

  • Information Systems
  • Geography, Planning and Development

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