×

Distance measuring quality factor using signal characterization

  • US 9,140,772 B1
  • Filed: 01/18/2013
  • Issued: 09/22/2015
  • Est. Priority Date: 01/18/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining a distance using a distance measuring system comprising a first transceiver and a second transceiver, said method comprising:

  • said distance measuring system determining said distance between said first transceiver and said second transceiver based on round trip communication delay time between said first transceiver and said second transceiver;

    said distance measuring system determining a channel classification;

    wherein the channel classification comprises saturated or not saturated;

    wherein the cannel classification is not saturated, and a further type category is determined to be line of sight or non-line of sight;

    said distance measuring system determining a leading edge offset value; and

    said distance measuring system determining a distance error variance for said distance based on said channel classification and said leading edge offset value;

    said distance measuring system determining a channel noise level and a scan peak value;

    said distance measuring system determining a scan peak signal to noise value based on said channel noise level and said scan peak value; and

    said distance measuring system determining a distance measurement quality factor based on said scan peak signal to noise value being less than a predetermined threshold.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×