| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a low-cost position and/or time information distribution device which supplies a signal for a GNSS compatible receiver unit indoors or underground to acquire position and/or time information. <P>SOLUTION: The position/time information distribution device is provided with means for retaining time information, means for retaining information to show a device provision position which is a position for a receiver to acquire, means for retaining orbit information in connection with one or more satellites, means for obtaining speed of the satellites relative to the device provision position and a distance between the device provision position and the satellites on the basis of the time information and the orbit information, and means for generating a signal which time-division multiplexes a false signal from each of the satellites on the basis of the speed and the distance. The false signal is given a propagation delay corresponding to a distance between the relevant satellite and the device provision position and Doppler shift generated by a speed of the relevant satellite relative to the device provision position. <P>COPYRIGHT: (C)2012,JPO&INPIT |
