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Detection limit of fishing boats by the day night band (DNB) on VIIRS
Author(s): Ichio Asanuma; Takashi Yamaguchi; John-geol Park; Kenneth J. Mackin; John Mittleman
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Paper Abstract

The detection limit of DNB was proposed as a function of the brightness temperature (BT) at 3.7 μm, where the transmittance of cloud could be observed as a change of surface temperature. The shortwave infrared band exhibited a wide distribution in BT more than the thermal infrared band for the same level of DNB radiance. The lights from surface were identified even under the full Moon condition with the proposed method, where clouds were reflecting the lunar lights. A different distribution of clouds for day to day and a change of the Moon phase with its elevation make this problem more complicated. But the approach of contrast based evaluation of surface lights and lunar reflected lights could be one solution to distinguish the lights from the surface. Currently, a validation is necessary in the future to confirm this algorithm and to validate the detected pixels to be fishing boats with the stable light sources. The time series data of fishing boats could be studied to analyze the region of fishing area relative to the distribution of sea surface temperature and/or chlorophyll-a.

Paper Details

Date Published: 19 September 2016
PDF: 8 pages
Proc. SPIE 9976, Imaging Spectrometry XXI, 99760P (19 September 2016); doi: 10.1117/12.2237701
Show Author Affiliations
Ichio Asanuma, Tokyo Univ. of Information Sciences (Japan)
Takashi Yamaguchi, Tokyo Univ. of Information Sciences (Japan)
John-geol Park, Tokyo Univ. of Information Sciences (Japan)
Kenneth J. Mackin, Tokyo Univ. of Information Sciences (Japan)
John Mittleman, Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 9976:
Imaging Spectrometry XXI
John F. Silny; Emmett J. Ientilucci, Editor(s)

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