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POLARIMETER APPARATUS

  • US 3,836,973 A
  • Filed: 09/29/1972
  • Issued: 09/17/1974
  • Est. Priority Date: 09/29/1972
  • Status: Expired due to Term
First Claim
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1. Polarimeter apparatus for measuring instantaneously and continuously the polarization characteristics of an incident electromagnetic wave comprising a vertically polarized antenna and a horizontally polarized antenna in orthogonal arrangement for respectively detecting the vertically polarized component and the horizontally polarized component of said incident wave;

  • mixer means connected to the outputs of said vertically polarized and horizontally polarized antennas to produce at its output first and second voltage signals representing said vertically polarized and horizontally polarized components respectively;

    signal adder means having its input connected to said mixer means output operative to simultaneously produce at its output, said first and second voltage signals, including third, fourth, fifth and sixth voltage signals comprising respectively the sums of said first voltage signal and said second voltage signal shifted in phase by first, second, third and fourth phase shift angles respectively;

    signal processing means operative to process said third and fourth voltage signals to thereby derive as a function thereof, the axial ratio of said incident wave and to simultaneously process said first, second, fifth and sixth voltage signals to thereby derive as a function thereof, the polarization angle and sense of rotation of said incident wave simultaneously with said derivation of said axial ratio.

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