A Wave Sensing Drift Buoy and it´s Homodyne Receiver

Author

Zhengxu Gian

Author_Institution

Inst. of Oceanol., Qingdao, China

fYear

1981

fDate

16-18 Sept. 1981

Firstpage

437

Lastpage

441

Abstract

Wave slope is telemetered from a drift wave-follower buoy by the changing of the distributive capacitance of the transmitting antenna on the swinging buoy caused by the notion of waves. Sea state can also be reported while the buoy is following the track of water parcels. A special phase-locked homodyne receiver is designed for receiving the "wow" like signal. The output of the VCO presents the instant wave slope. The design and construction of the buoy is given. A test was carried on Cook Strait, Xew Zealand. Signals were received at Kaikoura and Christchurch, 150 and 300 km from the buoy respectively. Good wave slope records were obtained. Discussion is given of the potential use of this method.

Keywords

ocean waves; oceanographic equipment; phase locked loops; radio receivers; telemetry; transmitting antennas; voltage-controlled oscillators; VCO; distributive capacitance; drift wave follower buoy; instant wave slope; phase locked homodyne receiver; sea state; swinging buoy; telemetry; transmitting antenna; water parcel track; wave sensing drift buoy; wow like signal; Clamps; Costs; Electronic ballasts; Interference; Petroleum; Phase locked loops; Resonance; Transmitters; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 81

Conference_Location

Boston, MA

Type

conf

DOI

10.1109/OCEANS.1981.1151678

Filename

1151678