| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio wave classification identifying method capable of identifying whether a received radio wave is frequency hopping communication using a plurality of frequencies or single communication using single frequency appeared as if the frequency hopping is generated in a narrow band by a frequency measuring error. <P>SOLUTION: This radio wave classification identifying method receives a radio communication wave to measure its frequency and its direction (S1), and groups respective direction targets with direction data within a directional error range formed into a group, using as the center a direction where an appearance frequency gets maximum in a direction identification processing process S3, within a frequency measuring error range using as the center a frequency where an appearance frequency gets maximum in the direction identification processing process S3, to be detected as the single frequency communication when a result therein is unified within the one frequency measuring error range, and to be detected as the frequency hopping communication when not unified, that is, when dispersed in the plurality of frequencies. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
