POSITIONING SYSTEM, ACCESS CONTROL SYSTEM, AND POSITIONING METHOD
A positioning system includes: a transmitting and receiving part having multiple antennas and positioned overhead in a positioning target area with a side entrance; a distance calculation part configured to calculate a distance between a communication device that can move in the positioning target a...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
20.06.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A positioning system includes: a transmitting and receiving part having multiple antennas and positioned overhead in a positioning target area with a side entrance; a distance calculation part configured to calculate a distance between a communication device that can move in the positioning target area, and the transmitting and receiving part, based on results gained from signals of multiple frequencies transmitted bidirectionally between the communication device and the transmitting and receiving part; an angle calculation part configured to calculate an angle that indicates a position of the communication device with respect to the transmitting and receiving part, based on a phase difference between the signals received by the antennas of the transmitting and receiving part; and a determining part configured to determine whether or not the communication device is approaching the side entrance based on the distance and angle calculated by the distance calculation part and the angle calculation part. |
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Bibliography: | Application Number: US202318541408 |