| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of positioning a receiver even if intensity of a received signal is too weak to receive navigation information. <P>SOLUTION: Code-modulated signals, that are transmitted by satellites SV1 to SV4 and each formed of individual codes representing the respective satellites SV1 to SV4, are received. At least one reference point BS, whose positions are substantially known, is selected. Information regarding the positions of at least one reference point and regarding satellite orbit information data of the satellites SV1 to SV4 is transmitted to positioning means S, MS. Thus, the satellite orbit information data of the respective satellites SV1 to SV4 used for at least positioning and the positions of at least one reference point is used for positioning of a receiver. <P>COPYRIGHT: (C)2013,JPO&INPIT |
