Research on fusion model of multi-temporal remote sensing bathymetry around island

Water depth is necessary for shipping security, port and marine engineering construction and planning utilization of coastal zone and island. Traditional bathymetry methods can provide accurate measurements of the water depth. But remote sensing has characteristics such as speediness, synchronization, large area, high resolution and so on, and it can solve many problems which are hard to overcome in traditional fathoming method. To fully utilize the existing resources of remote sensing images and excavate multi-temporal information effectively, the paper proposed the fusion model of multi-temporal remote sensing bathymetry inversion in Beidao Island based on fuzzy membership degree. By the help of decision fusion, both the mean relative error and the mean absolute error of the multi-temporal fusion result are lower than those of the single-temporal inversion results.