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Methods and apparatus for electromagnetic signal polarimetry sensing

  • US 9,857,316 B2
  • Filed: 03/15/2013
  • Issued: 01/02/2018
  • Est. Priority Date: 01/13/2012
  • Status: Active Grant
First Claim
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1. A method of identifying changes utilizing polarization comprising:

  • receiving polarized and coherent components of an at least partially polarized multipath signal at a receiver, wherein at least one signal path of the multipath signal is at least one of reflected off of a surface of a target object or transmitted through the target object;

    computing the Stokes parameter versus the frequency index of the subcarrier present within the received signal;

    calculating polarization as a function of frequency to determine the polarization mode dispersion of the received multipath signal;

    detecting a change in a polarization mode dispersion in response to a change in the target object; and

    displaying on a user interface the detected change in the polarization mode dispersion as a digital representation of the change in the target object.

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