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The design of a servo-controlled winch for R.R.S. "Discovery" with compensation for ship motion
No full textSonic Buoy - Buoy Heading Sensor handbook
Full text linkThe Buoy Heading Sensor was desigoed to provide a continuous measure of the orientation of the Sonic Buoy; this was required for referring the sonic and provane anemometer data to magnetic North.
This document describes in detail the design of the Buoy Heading Sensor; it is intended to serve the combined purposes of documenting the design and acting as a guide to operating and testing the sensor
Analysis of buoy motion package data
Full text linkA Buoy Motion Package (BMP) was developed in early 1993 for the purpose of monitoring the motion of the Sonic Buoy during seakeeping trials. The sensors incorporated in the package gave sufficient information to derive the directional wave spectrum, assuming that the buoy was a good slope follower.
In the Autumn of 1993, the SWALES experiment provided the opportunity to compare the directional wave spectra derived from the Sonic Buoy/BMP combination with spectra from a nearby Datawell Directional Waverider Buoy (DWR). This opportunity was pursued in mid 1994 under funding from the NERC MASD Technology Fund.
This document describes briefly the BMP data acquisition process; it then details the processes involved in conversion of the raw BMP data to buoy motion and, finally, the derivation of directional wave spectra.
An analysis of the comparison between the DWR and BMP spectra is given. Appendices give a detailed description of the analysis techniques developed, concluding with illustrations of the complete set of comparison directional spectra obtained during SWALES
Technical and operational difficulties experienced on the UKOOA Foula project, June to December 1977
No full textSonic Buoy general handbook
Full text linkThe Sonic Buoy was designed as a surface-following meteorological buoy, with the primary aim of measuring wind turbulence using a Gill Solent sonic anemometer.
This report outlines the general ftmction of the Sonic Buoy and its various sub systems and includes a detailed description of the layout and wiring of the sub system interconnections. The buoy has recently been used as part of the 1993 SWALES Experiment to gather data to support a Wave Tide Surge Model. The buoy has been described in the configuration used during this experiment
VHF Data Telemetry
Full text linkThe objective of the VHF Data Telemetry system was the collection of continuous raw data from the Solent Sonic anemometer, whist the sensor was deployed at sea, on the Sonic Buoy.
The aims of the development project were achieved within short timescales and the successful sea trial proved the overall system operationally viable.
The success of the system exceeded that expected, with 98% of data blocks received without errors. Analysis of the data success rates is shown, and areas for future development discussed.
The system hardware and the techniques are detailed, also included are the operational notes for upgrading the transmitter EPROM and the closing of data files via the RP link
SWALES Sonic Buoy - telemetered data report
Full text linkThe objective of the telemetry data system was the collection of continuous raw data from the Solent
Sonic anemometer, whilst the sensor was deployed at sea, on the Sonic Buoy. The success of the system exceeded that expected, with a 98% data blocks received without errors.
The report details the data collected together with file formats. Software developed for file format conversion and error analysis of the data is included.
Arrangements for the shore station errected for SWALES are detailed, also included is copy of the licence obtained from Department of Trade and Industry Radiocommunications Agency
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