Importance

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Abstract

An information terminal (1), a control device (3), and a plurality of direction sensing devices (5) constitute a radio wave transmission source location specifying system. The control device (3) specifies a location to be specified from where a target radio wave with a predetermined frequency is transmitted, by communicating with the information terminal (1) to be used by a user and the direction sensing devices (5) via a communication line (2). At this time, the information terminal (1) is provided from the control device (3) with a remote control function enabling remote control of operations of the direction sensing devices (5). Then, a transmission source location of the target radio wave is specified in the control device (3), in response to specification of an arrival direction in which the target radio wave with the predetermined frequency arrives in the information terminal (1), on the basis of the arrival direction and positional information on the direction sensing devices, by using the remote control function. The user is notified of information on the transmission source location of the target radio wave specified in such a manner that the user can recognize the information in the information terminal (1).

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First Claim