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Aircraft landing aid device

  • US 5,661,486 A
  • Filed: 04/10/1995
  • Issued: 08/26/1997
  • Est. Priority Date: 04/15/1994
  • Status: Expired due to Term
First Claim
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1. An aircraft landing aid device positioned on board an aircraft for assisting in the landing at an airport, said device comprising:

  • a database containing signatures and positions of three reference objects located in the immediate vicinity of said airport;

    a sensor means for detecting said signatures of said three reference objects;

    navigation means for determining the approximate position of said aircraft;

    correlation means connected to outputs of said navigation means, said sensor means and said database wherein said correlation means provides an output which defines vertical and horizontal bearings of said three objects;

    means for fixing an exact position of said aircraft wherein said means for fixing is connected to an output of said navigation means, an output of said sensor and said database and wherein said fixing means computes said exact position by triangulation as a function of the identification of said three reference objects and the exact position of said three reference objects.

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