GEOSCAN Search Results: Fastlink


TitleUrban flood detection using TerraSAR-X and SAR simulated reflectivity maps
AuthorBaghermanesh, S S; Jabari, S; McGrath, HORCID logo
SourceRemote Sensing vol. 14, issue 23, 6154, 2022 p. 1-21, Open Access logo Open Access
Alt SeriesNatural Resources Canada, Contribution Series 20220170
Mediapaper; digital; on-line
File formatpdf; html
SubjectsScience and Technology; machine learning; synthetic aperture radar surveys (SAR)
Illustrationssatellite imagery; tables; diagrams
ProgramGeobase 2.0 High Resolution Data Exploitation
Released2022 12 05
AbstractSynthetic Aperture Radar (SAR) imagery is a vital tool for flood mapping due to its capability to acquire images day and night in almost any weather and to penetrate through cloud cover. In rural areas, SAR backscatter intensity can be used to detect flooded areas accurately; however, the complexity of urban structures makes flood mapping in urban areas a challenging task. In this study, we examine the synergistic use of SAR simulated reflectivity maps and Polarimetric and Interferometric SAR (PolInSAR) features in the improvement of flood mapping in urban environments. We propose a machine learning model employing simulated and PolInSAR features derived from TerraSAR-X images along with five auxiliary features, namely elevation, slope, aspect, distance from the river, and land-use/land-cover that are well-known to contribute to flood mapping. A total of 2450 data points have been used to build and evaluate the model over four different areas with different vegetation and urban density. The results indicated that by using PolInSAR and SAR simulated reflectivity maps together with five auxiliary features, a classification overall accuracy of 93.1% in urban areas was obtained, representing a 9.6% improvement over using the five auxiliary features alone.
Summary(Plain Language Summary, not published)
The hypothesis of this study is whether the synergistic use of SAR simulation and PolInSAR can help detect flooded areas from non-flooded areas in an urban environment.

Date modified: