Development of Long-Range Ocean Radar

Though the 24.5-MHz HF ocean radar can measure surface current within a range of about 70 km, the range is not long enough to observe large-scale ocean currents such as the Kuroshio current. A new HF ocean radar developed in 2001 named Long-Range Ocean Radar has an ability to measure currents up to 200 km offshore, which is sufficient for Kuroshio current observation.

Observation range 200km Lower frequency 9.2-MHz band Observation of the Kuroshio current 150 km from the Ryukyu Arc Upper region of the Kuroshio current DBF Multi-beam Simultaneous observation of the entire area Freedom in antenna configuration