| 摘要 |
PROBLEM TO BE SOLVED: To obtain a positioning result according to the condition of a receiver in a shorter period of time. SOLUTION: This positioning server 10 is a positioning system which estimates a position of a cellular terminal 20 having a cellular communication function and a function to receive a signal used in GPS positioning. The positioning server 10 includes a radio communication information acquiring unit 14 to obtain information about cellular communication in the cellular terminal 20, an effectiveness estimating unit 15 to estimate the effectiveness of the GPS positioning, based on the information about cellular communication, and a GPS positioning control unit 17 to control execution of the GPS positioning of the cellular terminal 20, based on the estimated effectiveness. COPYRIGHT: (C)2010,JPO&INPIT |
