ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,488,683, issued on Dec. 2, was assigned to VIAVI SOLUTIONS INC. (Chandler, Ariz.).
"Distributed acoustic sensing of traffic" was invented by Stuart Large (Church Crookham, Great Britain) and Matt McDonald (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for estimating a position of a boundary of a queue of traffic are disclosed, the queue extending along a roadway. Distributed acoustic sensing is used to generate, as a function of time and of position along the roadway, a signal representing acoustic vibration at a sensing optical fibre that extends along the roadway. A queue signature is detected in the signal of eit...