Title:
STERN-WAVE DETECTION DEVICE, RADAR DEVICE, STERN-WAVE DETECTION METHOD, AND STERN-WAVE DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2014/192530
Kind Code:
A1
Abstract:
[Problem] To adequately detect stern waves generated by a sailing ship. [Solution] A stern-wave detection device (10b) is configured, which is provided with: a derivation unit (11) for deriving wave-crest velocity vectors, i.e. velocity vectors of wave crests on a water surface at each point in a prescribed range; and a stern-wave detection unit (12) for detecting a plurality of stern-wave velocity vectors by setting, as stern-wave velocity vectors caused by a pair of stern waves generated at a rear of a ship sailing on water, a pair of wave-crest velocity vectors which each face a direction within a prescribed angular range centred on a direction opposite to the orientation of a counterpart wave-crest velocity vector, and which have a speed at least a prescribed value greater than a reference value based on the speed of wave-crest velocity vectors at other points, said pair of wave-crest velocity vectors being from among the wave-crest velocity vectors at each point that are derived by the derivation unit (11).
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Inventors:
MORIGAKI RYOSUKE (JP)
NAKAGAWA KAZUYA (JP)
NAKAGAWA KAZUYA (JP)
Application Number:
PCT/JP2014/062658
Publication Date:
December 04, 2014
Filing Date:
May 13, 2014
Export Citation:
Assignee:
FURUNO ELECTRIC CO (JP)
International Classes:
G01S13/95; G01P5/00; G01S13/60
Foreign References:
| JPH11237477A | 1999-08-31 | |||
| JP2006292429A | 2006-10-26 | |||
| JP2009300207A | 2009-12-24 | |||
| JPH03262990A | 1991-11-22 | |||
| JP2000321349A | 2000-11-24 |
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