Acoustic-Doppler Current Profilers

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Short definition of Acoustic-Doppler Current Profilers (ADCP)
Multi-beam sonar instruments that rely on the Doppler-shift of backscattered echos to infer the speed of currents. Echo returns are time-gated to produce a profile of currents over some depth range extending away from the instrument. The range and resolution of ADCP data are constrained by the instrument sonar frequency and the set-up configuration. These can be mounted on seabed landers, tethered to moorings, added to CTD rosettes and or installed within ship hulls. Examples include the RDI Workhorses and Nortek something or others.

This is the common definition for Acoustic-Doppler Current Profilers, but other definitions maybe discussed within the wiki.