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The AWAC is perhaps the most well respected, sophisticated and frequently used acoustic Doppler profiler and directional wave gauge. Using Acoustic Surface Tracking (AST), the AWAC will make high quality wave measurements deployed up to 50 m below the surface.
The Aquadopp Profiler can make directional wave measurements in addition to the normal profile of current velocity. A special wave mode allows the Aquadopp to burst sample the pressure sensor and one cell of current velocity at 1 or 2 Hz.