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Passive ranging of a target

  • US 9,341,705 B2
  • Filed: 02/06/2013
  • Issued: 05/17/2016
  • Est. Priority Date: 01/31/2008
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a detector configured to determine a direction to a target in response to a signal received from the target; and

    a range finder configured to determine a range to the target in response to the direction and independently of an amplitude of the signal;

    wherein the range finder is configured to determine the range to the target by;

    tracking the target according to a first algorithm;

    tracking the target according to a second algorithm;

    weighting results of the first and second algorithms; and

    determining the range to the target in response to the weighted results of the first and second algorithms.

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