Wireless terminal positioning system, method of positioning wireless terminal, environment measurement system, facility management system, method of measuring environment, and method of deciding destination of wireless mobile terminal

摘要

To obtain a method of positioning a wireless terminal capable of obtaining the position of each communication terminal by measuring distances with installed communication terminals each other without fixedly installing a base station. A positioning management terminal 100 includes a positioning object decision section 130 that selects a terminal to be positioned, which is a positioning object, and a positioning standard terminal, whose position is known, among the wireless terminals 200; a positioning management section 120 that requires distance information between the terminal to be positioned and the positioning standard terminal; and a position calculation section 140 that calculates the position of the terminal to be positioned. The positioning management section 120 requires distance information from the positioning standard terminal selected by the positioning object decision section 130 to the terminal to be positioned selected by the positioning object decision section 130. The position calculation section 140 calculates the position of the terminal to be positioned using the distance information and position information of the positioning standard terminal.