| 摘要 |
PROBLEM TO BE SOLVED: To provide an information network on the sea by effectively using position information of buoys obtained from GPS. SOLUTION: The buoy is an apparatus that provides information in the sea together with position information by being equipped with a radio relay device, a GPS, an acoustic communication device, and an underwater acoustic antenna, in each of multiple floats which are disposed in a plurality of prescribed places, and the buoy is a mark indicating places of sunken rocks and sea routes and is an observation meter for use in verification of a temperature of the sea surface and wind velocity on the sea. The buoy is a highly functional buoy incorporating GPS, that is capable of obtaining information of objects in the sea and of the sea bottom by receiving a reflected wave of a signal transmitted from the acoustic communication device by the underwater acoustic antenna and is capable of transmitting the information to a ground station by the radio relay device. COPYRIGHT: (C)2009,JPO&INPIT
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