US Patent Issued to NEC on April 8 for "Trajectory estimation device, trajectory estimation system, trajectory estimation method, and program recording medium" (Japanese Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,899, issued on April 8, was assigned to NEC Corp. (Tokyo).

"Trajectory estimation device, trajectory estimation system, trajectory estimation method, and program recording medium" was invented by Yumi Arai (Tokyo) and Reishi Kondo (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A trajectory estimation device that includes an acquisition unit that acquires wave data based on a wave detected by a plurality of sensors; a generation unit that generates a spectrogram using the wave data; an extraction unit that extracts a Doppler shift from the spectrogram; a selection unit that selects, as a sensor pair, two of the sensors that satisfy a preset se...