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Determination of wave direction using an orbital following buoy

DRS at CSIR-National Institute of Oceanography

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Title Determination of wave direction using an orbital following buoy
 
Creator Fernandes, A.A.
Almeida, A.M.
Vaithiyanathan, R.
Vethamony, P.
 
Subject wave direction
computer programs
buoy systems
time series
simulation
 
Description Software has been developed in FORTRAN language using a personal computer for the determination of wave direction from time series measurements of heave, pitch and roll of an orbital following buoy. The method of digital band pass filtering describEd. by Edward C. Brainard 2 of Endeo Inc., USA was used. A derivation of the basic formula used is presented. The software developEd. by us, viz. BUOY-D-P.FOR, and the software providEd. by ENDECO, viz. 1156DBP. EXE, were both run for observed as well as computed simulated data. This is a preliminary report on program development. In the case of observed data, wave directions obtained with BUOY-D-P agreed within within plus or minus 5 degrees with the single available visual estimate of swell direction and within plus or minus 50 degrees with directions obtained with 1156DBP. In the case of computer simulated data, BUOY-D-P was able to recover wave directions accurately for both mono-chromatic and multi-chromatic wave trains. 1156DBP was equally successful, except that if the simulated wave direction was theta, the computed direction was found to be mu + theta. This offset has been explained.
 
Date 2009-05-05T05:03:38Z
2009-05-05T05:03:38Z
1994
 
Type Conference Article
 
Identifier Ocean technology: Perspectives, Ed. by: Sushilkumar; Agadi, V.V.; Das, V.K.; Desai, B.N. 378-388p.
http://drs.nio.org/drs/handle/2264/2672
 
Language en
 
Publisher Publ. and Inf. Dir., New Delhi, India