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SYSTEM AND METHOD FOR DETERMINING GEO LOCATION OF A TARGET USING A CONE COORDINATE SYSTEM

  • US 20160061932A1
  • Filed: 10/23/2013
  • Published: 03/03/2016
  • Est. Priority Date: 09/24/2013
  • Status: Active Grant
First Claim
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1. A method performed by one or more processors for determining geo-position of a target by an aircraft, the method comprising:

  • receiving navigation data related to the aircraft including aircraft attitude information;

    receiving multilateration information related to the target including an angle to the target;

    calculating an axis for a cone fixed to the aircraft, based on the received aircraft attitude information;

    calculating a central angle for the cone from the received angle to the target;

    generating two vectors orthogonal to the cone axis;

    calculating a cone model from the axis, the central angle and the two vectors; and

    intersecting the cone model with an earth model to obtain a locus of emitter positions (LEP) curve, wherein the LEP curve is used to determine the geo position of the target.

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