Using SAR satellite data to delineate coastal features from Bangladesh case study

Wednesday 24 March 2021 - 14:00 to 15:00
Virtual / VC
Clive Neil

SAR satellite coastal mapping - A Bangladesh case study

Clive Neil, NOC

The Ganges river delta is a large area with rapid sediment morphology. The highly mobile sediment and size and accessibility of the region make in-situ surveys difficult, expensive and rapidly redundant. Since 2015 the European Space Agency’s Sentinel-1 satellite constellation have produced SAR images from nearly all global coastal locations on a 6 day or better repeat rate. SAR satellites measure the scattering coefficient. sigma0, which is the strength of the radar signal reflected back to the senor per unit area illuminated. Sigma0 depends on the properties of the radar instrument and the dialectic constant and geometry of the scattering body. Differences in sigma0 between land and water make SAR satellite data useful for coastal mapping.

SAR satellite coastal mapping - A Bangladesh case study.

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