Nautical X-band radar low-cost option with the antenna beamwidth 1.9o was applied for monitoring surface near-shore currents in the Black Sea Field Research Facility of the Southern Branch of P.~P.~Shirshov Institute of Oceanology. The radar signal was processed by an algorithm based on the Nieto-Borge approach. The experimental setup is shown to allow precise real-time near-surface current measurements up to 4 km offshore. A case study of a coherent current pattern resembling a sub-mesoscale vortex passing the experimental field is presented.
X-band radar, radiowave oceanography, currents, sub-mesoscale vortex, Black Sea
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