| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for estimating an azimuth of a radio station capable of highly precisely estimating the position of the radio stations, to provide a device for estimating the azimuth of the radio station and emitting radio waves, and to provide a method of estimating the azimuth of the radio station. SOLUTION: The arrival direction of the desirable radio wave are estimated by an array antenna 1, frequency detection means 2 and radio wave arriving direction detection means 3. A position of the radio station estimation means 5 of ray trace method estimates the position of the radio station by the ray trace method based on the arrival direction of the estimated radio wave, and the 3-D map data from altitude/map database 4 provided with the 3-D map data. COPYRIGHT: (C)2006,JPO&NCIPI
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