The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2005
Filed:
Apr. 02, 2003
Masatoshi Harigae, Tokyo, JP;
Isao Yamaguchi, Tokyo, JP;
Tokio Kasai, Tokyo, JP;
National Aerospace Laboratory of Japan, Tokyo, JP;
Abstract
The present invention provides a GPS device for measuring the wave height and current direction and speed, which is capable of accurately measuring the wave height (height of the waves) and current direction and speed (tidal current) in any point on the sea, ocean, lake, or marsh, and to a system using such a device. The GPS receiverof the GPS devicefor measuring the wave height and current direction and speed processes the GPS signals received with the GPS antennaand measures the three-dimensional position of antenna. The three-dimensional position data are recorded by the data recording unitconnected to the GPS receiver. When the floating bodyhaving those devicesinstalled thereon floats on the sea or ocean, it moves together with the waves and tidal current in the present location. The softwarefor conducting high-pass filter processing and smoothing processing is installed in the data processing unit, and the data on the wave height and current direction and speed are output, while the errors are being removed from the three-dimensional position data recorded in the data recording unit