Ichio ASANUMA
Tokyo University of Information Sciences, Japan
Title: Possibility of detection and identification of boats and vessels detected by Day-Night-Band of VIIRS and synthetic aparture radar on RADARSAT
Biography
Biography: Ichio ASANUMA
Abstract
The day-night-band (DNB) of the visible infrared and imaging radiometer suite (VIIRS) on the Suomi-NPP detects light of the fishery boats on the open water at night, although the presence of clouds exhibits a limitation of detection. In contrast, the synthetic aperture radar (SAR) on the RADARSAT detects the boats and vessels on the water even through the clouds, although the observations are difficult in the midnight because of power consumption by SAR. The locations of vessels weighing greater than 300 tons are reported by the automatic identification system (AIS) with the maritime mobile service identity (MMSI) and are available to the public, although the locations of smaller fishery boats are not included. In this study, the locations of boats and vessels detected by DNB, SAR and reported by the AIS are plotted on the geophysical information system (GIS) so as to discuss the inconsistencies of locations introduced by the difference of observation time. Although the ship identifications are difficult for the data observed by the DNB and the SAR by itself, the MMSI data reported by the AIS with the interpolation methods exhibited the possibility to identify the large vessels from the data observed by DNB and SAR on the GIS analysis.