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Systems and methods to determine kinematical parameters

  • US 10,592,711 B2
  • Filed: 11/27/2018
  • Issued: 03/17/2020
  • Est. Priority Date: 06/05/2008
  • Status: Active Grant
First Claim
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1. A reader, comprising:

  • an antenna circuitry to transmit an interrogating electromagnetic wave according to an interrogating signal having a predetermined frequency;

    a receiver circuitry to obtain a received signal generated by a radio frequency device from the interrogating electromagnetic wave, the radio frequency device having an identification; and

    a processor coupled to the receiver to;

    determine the identification of the radio frequency device from the received signal;

    combine a portion of the interrogating signal having the predetermined frequency with a portion of the received signal to generate a combined signal; and

    compute a position or speed of the radio frequency device based at least in part on a characteristic parameter of the combined signal;

    wherein the characteristic parameter, based on which the position or speed of the radio frequency device is computed, is based on a time duration of a number of characteristic points in the combined signal.

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