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Arrangement for, and method of, locating a mobile device in a venue by inferring transit timer values of ranging signals received by the mobile device in a time difference of arrival (TDOA)-based ultrasonic locationing system
Arrangement for, and method of, locating a mobile device in a venue by inferring transit timer values of ranging signals received by the mobile device in a time difference of arrival (TDOA)-based ultrasonic locationing system
Ultrasonic transmitters periodically transmit ranging signals at unknown transmit timer values, and an ultrasonic receiver receives the ranging signals at known receive timer values on a mobile device in a venue in which a time difference of arrival (TDOA)-based ultrasonic locationing system is deployed. A controller infers the transmit timer values, and determines a current, real-time position of the mobile device based on flight time differences between the transmit timer values inferred by the controller and the known receive timer values.
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