| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a positioning method, a positioning system and a program capable of precisely positioning using the RSSI. <P>SOLUTION: The positioning method for positioning a position of a mobile terminal comprises the steps of: obtaining the strength of present radio signals from plural anchors received by the mobile terminal; determining a distance from plural anchors to the mobile terminal based on relationship between the previously calculated distances and a range of the distances of the mobile terminal from the respective anchors based on the strength of the radio signal; narrowing the range of the position of the mobile terminal to a first range in a manner of three-point positioning based on the range of the determined distances from the respective anchors; calculating a range of the position of the mobile terminal corresponding to the disturbance parameters base on the range of the difference of the distances from two anchors forming a combination to the mobile terminal with respect to every combinations of two anchors; and narrowing the calculated range of the position of the mobile terminal to a second range which is formed by a multiplication area of the range of the position and the first range. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
