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System and method for determining the location of a transmitter using passive reflectors or refractors as proxy receivers and using database querying

  • US 20020196188A1
  • Filed: 06/25/2001
  • Published: 12/26/2002
  • Est. Priority Date: 06/25/2001
  • Status: Active Grant
First Claim
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1. A system for determining the location of a transmitter comprising:

  • a transmitter to be located that transmits a signal;

    at least one receiver that receives a signal from the transmitter;

    at least one proxy receiver as an object that reflects and/or refracts a signal along an arriving path to the at least one receiver; and

    a processor operative with the at least one receiver for determining the location of the at least one proxy receiver based on one of querying a look-up table or extracting image features from a mapping system, and determining the location of the transmitter based on the Time of Arrival and at least one of Angle of Arrival of signals from the at least one proxy receiver and transmitter.

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