ACOUSTIC Doppler Current Profiler
An acoustic Doppler current profiler (ADCP) is a hydroacoustic current meter similar to a sonar, used to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column.
STARC works closely with UHDAS to operate Healy's RDI Ocean Surveyor (75kHz and 150kHz) ADCP. UHDAS, University of Hawaii Data Acquisition System, performs data acquisition and preliminary processing on the ADCP and ancillary data feeds, providing data at sea for operations for immediate science use, and monitoring of the system. It sends a daily email back to Univ. Hawaii to the UHDAS Team, who look for signs of problems.