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Polarimetric selectivity method for suppressing cross-track clutter in sounding radars

  • US 7,570,202 B2
  • Filed: 05/16/2008
  • Issued: 08/04/2009
  • Est. Priority Date: 05/16/2007
  • Status: Active Grant
First Claim
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1. A method for suppressing cross-track clutter in a sounding radar comprising the steps of:

  • transmitting a circularly polarized electromagnetic (EM) field over a full beamwidth of an antenna pattern;

    receiving a coherently dual-polarized backscattered field containing cross-track clutter and a desired signal having different polarizations;

    using data embedded in the received backscattered field to calculate Stokes parameters that characterize the receive backscattered field;

    using the calculated Stokes parameters to identify the polarizations of the desired signal and the cross-track clutter; and

    suppressing the cross-track clutter using the difference in polarization between the cross-track clutter and the desired signal.

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