| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system, a method, and a device for improving performance of a receiver of a Global Navigation Satellite System (GNSS), and especially to provide improving ability for calculating a position of a satellite or a position of the receiver, when the ability with which the receiver directly receives ephemeris data broadcast from a GNSS satellite has deteriorated. <P>SOLUTION: A correction term is applied to a generally long-term satellite position model, such as Almanac that is being broadcast. <P>COPYRIGHT: (C)2013,JPO&INPIT |
