MUSIC方式方向探知システムの大型船舶への適用研究

Abstract

The MUSIC (Multiple Signal Classification) method is different from the conventional direction finder by the Goniometer method and Doppler method that has been using on vessels, in having capability of the measurement the direction of radio wave in azimuth and elevation, and even during jamming. The MUSIC method direction finder in a short wave band is using practically for radio wave monitor in the land. This time, Authors investigated the performance and the usefulness on vessel. The authors measured direction of radio signal in the land. Arrangement of the antennas which were set on circumference with diameter of 80 meters in the land was like a ship, and its interval are similar to actual deck shape of the hull, and measurement precision depend on its strength of radio signals, and the situation that did not become same became clear. In addition, the authors measured direction of radio signal on the actual vessel, and made the electromagnetic model of the hull, and became clear that a measurement error by the hull reduced by adopting the electromagnetic steering vector.