Ranging and positioning system
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United States of America Patent
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Nov 3, 2020
Grant Date -
Sep 28, 2017
app pub date -
Jun 13, 2017
filing date -
Feb 14, 2013
priority date (Note) -
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Abstract
A ranging and positioning system comprising transmitters and receiver nodes communicating together by chirp-modulated radio signals, that have a ranging mode in which ranging exchange of signals takes place between a master device and a slave device that leads to the evaluation of the range between them. The slave is arranged for recognizing a ranging request and transmit back a ranging response containing chirps that precisely aligned in time and frequency with the chirps in the ranging requests, whereupon the master can receive the ranging response, analyze the time and frequency the chirps contained therein with respect to his own time reference, and estimate a range to the slave.
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