To verify the feasibility of an antenna system with integrated transmitting and receiving antennas for use on OSMAR-S high frequency radar, an experiment of radar observation with time series of sea currents observed by Acoustic Doppler Current Profiler (ADCP) in situ was conducted within the Pearl River Estuary from November 25 to December 1, 2021. The experimental results show that the radar and ADCP observations are in high agreement, with correlation coefficients as high as 0.916. The magnitudes and changes with time of the amplitudes of the main sub-tides (M2 and K1) obtained by the reconciliation analysis and other methods are in high agreement. The experiment indicates that the transceiver antenna system, on the basis of its advantages of small footprint, low cost and convenience to set up on the seashore, still has high accuracy for in situ current observations.

marine environment monitoring, high frequency ground wave radar, monopole cross loop, harmonic analysis, rotary power spectrum analysis