Accession Number : ADA621529


Title :   Calibration and Validation of Inertial Measurement Unit for Wave Resolving Drifters


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Portell, Jeffrey R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a621529.pdf


Report Date : Dec 2013


Pagination or Media Count : 81


Abstract : We examine the performance of the Yost Engineering Incorporated 3-Space Sensor Data-Logging (TSS-DL) for use in wave resolving drifters (WRDs) that collect ocean surface wave data. We create a surface wave orbital motion simulator to test the TSS-DL in a controlled, laboratory setting at the Naval Postgraduate School. Tests are conducted in three different configurations at five frequencies within the swell and wind-sea bands. Results from the tests show that the TSS-DL can accurately resolve the vertical simulated wave motions to within 3 7% of the analytic signal amplitude and can resolve the horizontal simulated wave motions to within 21 33% of the analytic signal amplitude. We further examine some field data collected using the TSS-DL onboard WRDs deployed in June 2013 near the mouth of the Columbia River. This analysis, based on comparison with independent GPS wave measurements, demonstrates that the TSS-DL yields reliable estimates of surface wave spectra and can track surface wave profiles even under extreme conditions with large breaking waves. Overall, this study shows that the TSS-DL is a suitable sensor for use in ocean surface drifters to accurately record surface waves.


Descriptors :   *CALIBRATION , *COLUMBIA RIVER , *OCEAN SURFACE , *OCEAN WAVES , *VALIDATION , AMPLITUDE , CONFIGURATIONS , DETECTORS , GLOBAL POSITIONING SYSTEM , HORIZONTAL ORIENTATION , LABORATORIES , MEASUREMENT , METEOROLOGICAL DATA , MOTION , OCEANS , SIMULATION , SPECTRA , SURFACE WAVES , THESES , VERTICAL ORIENTATION


Subject Categories : Physical and Dynamic Oceanography


Distribution Statement : APPROVED FOR PUBLIC RELEASE