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Amplitude selected phase interferometer angle measuring radar

  • US 4,170,774 A
  • Filed: 01/24/1972
  • Issued: 10/09/1979
  • Est. Priority Date: 01/24/1972
  • Status: Expired due to Term
First Claim
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1. In a phase interferometer radar elevation angle measuring system, the combination comprising:

  • receiver means, including a pair of antennas, relatively displaced and tilted in a plane within which elevation angles to radar targets are to be determined, for presenting a pair of time varying signals representing target return signals received by the respective antennas;

    phase means responsive to said receiver means for generating a phase function signal as a function of the phase difference between said pair of signals;

    amplitude function means responsive to said receiver means for generating an amplitude function signal as a function of the difference of the amplitudes of said pair of signals; and

    gate means responsive to said phase function signals generated by said phase means and to said amplitude function signals generated by said amplitude means for comparing said phase function signals with said amplitude function signals and for presenting signals representing elevation angles to targets in response to related ones of said phase function signals being within prescribed limits of corresponding ones of said amplitude function signals.

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