POSITION DETECTION SYSTEM, POSITION DETECTION METHOD FOR THE POSITION DETECTION SYSTEM, POSITION DETECTION COMMUNICATIONS DEVICE, AND THE COMMUNICATIONS DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a position detection system, capable of detecting the position of a repeating installation for communicating a plurality of the first communications devices with a second communications device, a position detection method for the position detection system, a position detection communications device, and a communications device. PSOLUTION: Each of the plurality of the first communication devices is provided with the first transmission part for transmitting a distance calculating signal for calculating the distance with respect to the second communication device, a detection part for detecting the phase difference between the distance calculating signal when transmitted and a signal in response to the distance calculating signal when received, and a calculation part for calculating the distance, based on the phase difference, and the second communication device has a determination part provided with the second transmission part for transmitting a signal in response to the distance calculating signal, and for determining whether the plurality of distances calculated by a plurality of calculation parts is less than a predetermined distance, and a position detecting part for detecting the position of the repeating device corresponding to the plurality of distances when the determination part determines it to be the predetermined distance or more. PCOPYRIGHT: (C)2006,JPO&NCIPI