CFAV QUEST Q293 – Sea Trial Summary and Summary and Analysis of Wave Measurements and Ship Motion Response

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Authors
  1. Stredulinsky, D.C.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
A sea trial was conducted in January 2006 on CFAV QUEST to evaluate the performance of a WaMoS II wave radar and to gather wave and ship motion data that will assist in the development of a fusion algorithm to improve the radar wave height measurements by using ship motion response measurements and predictions. This report first documents the sea trial and then focuses on the analysis of the wave measurements and ship motion response. Since data from four wave buoys was available for much of the trial it was possible to obtain a good measurement of wave conditions encountered by the ship. While wave directions and peak wave periods measured by the wave radar were generally in reasonable agreement with the wave buoy measurements, the wave radar height measurements during the sea trial ranged from half the wave buoy heights on some occasions to over 2.5 times the wave buoy significant wave heights on other occasions. Even with ‘best-fit’ wave radar calibration parameters (fit to the trial data after the trial) the wave radar heights still showed large scatter (ranged from -40% to +80% of the wave buoy measurements). Comparisons of measured motion responses and predictions made with the DRDC hydrodynamic code SHIPMO7, with input of the directional wave buoy spectra, suggest that the use of pitch and heave response show the greatest promise for accurate ‘correction’ of wave heights measured and predicted by the wave radar.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-TM-2008-072 — Technical Memorandum
Date of publication
01 May 2008
Number of Pages
292
DSTKIM No
CA032248
CANDIS No
531309
Format(s):
CD ROM

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