The effect of neglecting the instantaneous static orientation of an Ametek/Straza DCP 4400A/300 shipboard profiler is illustrated using an approximate numerical model and reference to pitch and roll ground-truth data collected aboard MW CSS Dawson under heavy sea conditions. Motion-compensation algorithms are based on use of 50-s period compound pendulum and pendulum-stabilized accelerometers for inertia reference. These algorithms are being implemented on an enhanced IBM PC-XT real-time data acquisition and display system. Included are provisions for static beam-geometry correction and noise rejection based on beam redundancy. First-order dynamic motion correction is discussed.
Motion compensation for a shipboard Doppler current profiler: considerations and implementation
Bewegungskompensator fuer einen Doppler-Stroemungsmesser eines Schiffes: Ueberlegungen mit Implementierung
1987
6 Seiten, 10 Quellen
Conference paper
English
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