Chapter
Apr 26, 2012
Estimation of Directional Wave Spectra from Non-Stationary Wave Sensors
Authors: Leon E. Borgman [email protected] and Marshall D. Earle [email protected]Author Affiliations
Publication: Ocean Wave Measurement and Analysis (2001)
Abstract
Techniques are developed to estimate directional wave spectra from point measurements made by non-stationary wave sensors. Examples of data sources are: (1) several freely drifting small wave buoys potentially deployed from aircraft, and (2) one or more wave measuring Autonomous Underwater Vehicles (AUV's) moving in programmed paths. All sensors are time-coordinated and each sensor's horizontal position is adequately established using Global Positioning System (GPS) methods. Sensor paths are assumed to remain within a zone of wave pseudo-stationarity. Procedures for sensors that are moving relative to each other are based on time domain statistical procedures utilizing stepwise, ridge regression with random selection of candidate transfer functions over a frequency/direction search block. Simulated data are used to illustrate results for pressure sensors mounted on AUV's. The techniques are also applicable to fixed-position sensor arrays currently in use.
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Published In
Ocean Wave Measurement and Analysis (2001)
Pages: 318 - 327
Copyright
© 2002 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Affiliations
President, L.E. Borgman, Inc., 2526 Park Ave., Laramie, WY 82070. E-mail: [email protected]
Sr. Oceanographer, Neptune Sciences, Inc., 40201 Hwy. 190 E., Slidell, LA 70461. E-mail: [email protected]
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