| 摘要 |
PROBLEM TO BE SOLVED: To reduce the overhead by measuring the directions to a plurality of other radio stations from one radio station highly accurately in comparison with the conventional technique. SOLUTION: Signal measured values which are received electric field strengths for every predetermined azimuth to respective radio stations, among a plurality of radio stations, within a service area, are measured in advance and stored in a storage device as a signal measured value table. With respect to a transmitted signal from each of the radio stations, its received electric field strength is then measured by using at least two neighboring sector patterns including a sector pattern of a main beam at an azimuth having the maximum signal measured value in the signal measured value table and on the basis of the measured received electric field strengths, mono-pulse angle measuring processing is used to linearly approximate a quotient pattern for which a difference pattern of two sector patterns measured in advance is divided with its sum pattern, between azimuths of main beams in the two sector pattern, thereby calculating an azimuth having the maximum received electric field strength. COPYRIGHT: (C)2004,JPO&NCIPI
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