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Method for three-dimensional beam forming in direction finding systems

  • US 6,178,140 B1
  • Filed: 03/24/1999
  • Issued: 01/23/2001
  • Est. Priority Date: 05/19/1998
  • Status: Expired due to Term
First Claim
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1. A method of beam forming in direction finding systems having at least three identical groups of transducers, with each group comprising at least one transducer, whereina) a first pair of identical groups of transducers has one group each located at both sides of a first axis (y);

  • b) a second pair of identical groups of transducers has one group each located at both sides of a second axis (x), wherein the angle ψ

    between said first and second axis is choosen ψ



    0, said method comprising the following steps performed by a signal processing unit;

    c) calculating a first summation signal RBSum(xz) from the absolute values |L| and |R| of the complex output signals L, R of the first pair of transducer groups according to equation

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