Ultra-wideband radar motion sensor

Details Ultra-wideband radar motion sensor Ultra-wideband radar motion sensor

G - Physics

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G01S 13/52 (2006.01) G01P 13/00 (2006.01) G01S 13/02 (2006.01) G01S 13/522 (2006.01) G01S 13/524 (2006.01) G01S 13/56 (2006.01) H04B 1/69 (2006.01)

Patent

CA 2160352

A motion sensor is based on ultra-wideband (UWB) radar. UWB radar range is determined by a pulse-echo interval. For motion detection, the sensors operate by staring at a fixed ranged and then sensing any change in the averaged radar reflectivity at that range. A sampling gate is opened at a fixed delay after the emission of a transmit pulse. The resultant sampling gate output is averaged over repeated pulses. Changes in the averaged sampling gate output represent changes in the radar reflectivity at a particular range, and thus motion.

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