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Method and system for target localization

  • US 6,668,218 B1
  • Filed: 03/27/2002
  • Issued: 12/23/2003
  • Est. Priority Date: 03/27/2002
  • Status: Expired
First Claim
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1. A method of estimating a minimum range to a target, comprising:

  • a. obtaining at least three bearing data points of the target with respect to an ownship;

    b. using the three bearing data points to determine a speed contribution Vos of a first point of interest to a distance from a relative velocity vector over a time frame comprising an initial time t0 to a predetermined time ti;

    c. determining an angle θ

    β

    as defined as the bearing relative to the ownship'"'"'s heading at the point in time of closest approach to a second point of interest; and

    d. calculating a minimum range Min RCPA using the formula

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