ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,666, issued on Feb. 18, was assigned to QUALCOMM Inc. (San Diego).

"Mitigation of impact of oscillator error on doppler estimation for radio frequency sensing" was invented by Weimin Duan (San Diego), June Namgoong (San Diego) and Hyojin Lee (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Radio frequency (RF) sensing by a sensing entity with an oscillator that introduces frequency errors is supported using dual direction bistatic sensing. The sensing entity transmits a sensing signal that is reflected by an object and received by a second sensing entity, which measures a first frequency offset that includes an oscillator error from the tra...