An Improvement in the Calculation of ADCP Velocities
Acoustic Doppler current profilers are used to measure currents in a variety of aquatic conditions. When nonzero pitch and roll angles occur, a number of complications arise in the conversion from beam velocities, which are measured parallel to the acoustic beams, to earth velocities. One such diffi...
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Published in | Journal of atmospheric and oceanic technology Vol. 19; no. 10; pp. 1738 - 1741 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Boston
American Meteorological Society
01.10.2002
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Subjects | |
Online Access | Get full text |
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Summary: | Acoustic Doppler current profilers are used to measure currents in a variety of aquatic conditions. When nonzero pitch and roll angles occur, a number of complications arise in the conversion from beam velocities, which are measured parallel to the acoustic beams, to earth velocities. One such difficulty is correcting for the vertical difference between bins in each beam. It is demonstrated that the default algorithm may lead to errors in the recovered velocity field, particularly in the presence of strong shears. An alternative correction is proposed, one which reduces the error by an order of magnitude for a flow field recently measured in an estuary. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
ISSN: | 0739-0572 1520-0426 |
DOI: | 10.1175/1520-0426(2002)019<1738:AIITCO>2.0.CO;2 |