GPS OCEAN WAVE MEASURING METHOD

PROBLEM TO BE SOLVED: To provide a GPS ocean wave measuring method for mounting a stand-alone GPS receiver to a buoy, acquiring a period of an ocean wave from a fluctuation of the buoy based on a GPS signal received by the receiver, and also acquiring a wavelength and a wave speed based on the perio...

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Bibliographische Detailangaben
Hauptverfasser:	KASAI TOKIO, YAMAGUCHI ISAO, HARIKAE MASATOSHI, IGAWA HIROTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES EQUIPMENT FOR SHIPPING GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PERFORMING OPERATIONS PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS SURVEYING TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a GPS ocean wave measuring method for mounting a stand-alone GPS receiver to a buoy, acquiring a period of an ocean wave from a fluctuation of the buoy based on a GPS signal received by the receiver, and also acquiring a wavelength and a wave speed based on the period. SOLUTION: A vertical movement data of the GPS buoy is acquired based on the GPS signal received by the stand-alone GPS receiver 2 mounted in the buoy 1. A frequency corresponding to a peak value of wave height power of the ocean wave is identified and the period of the ocean wave corresponding to the frequency is determined by analyzing a spectrum of the vertical movement data. The wavelength and the wave speed at each spectrum can be determined from an approximate expression based on the period. COPYRIGHT: (C)2005,JPO&NCIPI