| 摘要 |
<P>PROBLEM TO BE SOLVED: To measure respective incoming azimuths of plural radio waves even when an incoming waves has the plural radio waves intermixed, while maintaining the scale and simplicity of the production processes of a device receiving the incoming waves. <P>SOLUTION: An azimuth measurement system having plural receiving stations and base stations that receive incoming waves and calculating respective incoming azimuths of plural radio waves intermixed in the incoming waves, with the plural receiving stations each separating a reception signal based on the incoming wave into plural separation signals by means of an independent component analysis method, adding positional information and clock time information and transmitting the resultant to the base station, and the base station applying a cross-correlation function to each of combinations of two separation signal of plural separation signals coinciding with the added clock time information to determine a combination of two separation signals with a high degree of coincidence and defining, as respective incoming azimuths of the plural radio waves, azimuths calculated on the basis of both temporal differences at the peak value of the cross-correlation function of the determined combinations and the positional information respectively added to individual combinations that have been determined. <P>COPYRIGHT: (C)2012,JPO&INPIT |
