| 摘要 |
PROBLEM TO BE SOLVED: To acquire the position of an ad hoc repeating installation even if the ad hoc repeating installation is located inside a house. SOLUTION: The ad hoc repeating installation 5 has a GPS positioning function, and transmits a radio signal including the position information of an own terminal and positioning time. The ad hoc repeating installation 8 detects the orientation of the own terminal, and transmits reception time when the positioning time included in the radio signal from the ad hoc repeating installation 5 is received and the radio signal including the orientation. A terminal unit 4 uses the positioning time and the reception time to calculate the distance between the ad hoc repeating installations 5, 8, calculates the position of the ad hoc repeating installation 8 based on the distance, the position information of the ad hoc repeating installation 5, and the orientation of the ad hoc repeating installation 8, and generates display data for allowing a display to display the position. COPYRIGHT: (C)2009,JPO&INPIT
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