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Systems and Methods for Detecting Movement of a Target
Physics Faculty Publications
  • Douglas T. Petkie, Wright State University - Main Campus
Document Type
Patent
Publication Date
9-23-2010
Abstract
A system is disclosed for wirelessly detecting movement of a target. The system comprises a reference oscillator, a transmitter, a receiver, a demodulator, and a processor, wherein: the reference oscillator generates references frequencies for the transmitter, the receiver, and the demodulator; the transmitter generates a continuous-wave signal at a frequency based on the transmitter reference frequency and wirelessly transmits it to the target; the receiver wirelessly receives a reflected signal from the target having a phase angle corresponding to movement of the target and converts the reflected signal into an intermediate frequency signal based on the receiver reference frequency; the demodulator demodulates the intermediate frequency signal into an in-phase component and a quadrature component; and the processor converts the in-phase component and the quadrature component into a movement signal corresponding to movement of the target.
Comments

Patent # US 20100241009 A1

Citation Information
Douglas T. Petkie. "Systems and Methods for Detecting Movement of a Target" (2010)
Available at: http://works.bepress.com/douglas_petkie/27/