TERMINAL POSITION IDENTIFICATION METHOD AND SYSTEM THEREOF

摘要

There is provided a technique capable of accurately identifying the position of a terminal even in an environment having only two stations including a base station and a GPS satellite capable of performing measurement. A hyperbolic curve (11) is obtained from a difference between the signal reception time from a base station (22) and the signal reception time from a base station (23) at a terminal (21) and a circle (12) is obtained from the round-trip propagation time between the base station (22) and the terminal (21). An intersection point between the hyperbolic curve (11) and the circle (12) is calculated to obtain a candidate point (13) and a candidate point (14). Since the terminal (21) is located in a sector (27), the candidate point (13) existing in the range of the sector (27) is specified as the position of the terminal (27).