| 摘要 |
PROBLEM TO BE SOLVED: To achieve a system without need of three or more sets of positioning equipment other than a wireless tag of a search target, using a low-cost radio search device of a simple structure without any complicated and expensive built-in control mechanism, in a system for estimating the location direction of the wireless tag of the search target from the radio search device.SOLUTION: From the direction and the reception intensity of an incoming reception signal from a wireless tag 200n, a radio search device 100 estimates the location direction and the distance of the wireless tag, and acquires distance measurement information to the wireless tag 200n, as a positioning auxiliary method, from a radio transceiver 700 that functions as a radio station for positioning support. Using the estimation result of the relative position of the radio transceiver 700 viewed from the radio search device 100 and the positioning auxiliary information, the radio search device 100 calculates a more accurate estimation result in regard to the location direction and the distance of the wireless tag 200n. |
