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Method for iterative target location in a multiple receiver target location system

  • US 10,520,582 B2
  • Filed: 02/19/2019
  • Issued: 12/31/2019
  • Est. Priority Date: 06/05/2014
  • Status: Active Grant
First Claim
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1. A method for determining target location in a multiple receiver target location system, the multiple receiver target location system including a plurality of location tags each associated with a respective target, receivers, and a central processor, the method comprising:

  • receiving, from the receivers, time of arrival (TOA) data associated with location tag transmissions;

    determining a first set of the receivers based on the received TOA data;

    calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers;

    determining a first data quality indicator (DQI) for the first tag location estimate; and

    when the first DQI for the first tag location estimate does not meet a threshold;

    determining, for the first set of the TOA data, impacts of respective delays on the minimizing function;

    determining, based on the impacts of the respective delays on the minimizing function, a second set of the receivers different from the first set of the receivers; and

    calculating a second tag location estimate for the second set of the receivers.

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