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METHODS AND SYSTEMS FOR INTERFEROMETRIC CROSS TRACK PHASE CALIBRATION

  • US 20080143585A1
  • Filed: 02/07/2006
  • Published: 06/19/2008
  • Est. Priority Date: 02/07/2006
  • Status: Active Grant
First Claim
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1. A method to compensate for variances in signal path delays for a plurality of radar return processing channels, said method comprising:

  • providing a signal in the signal path between an antenna and a corresponding receiver of each radar return processing channel, wherein providing the signal in the signal path comprises momentarily switching an output of a signal source into each radar return processing channel;

    receiving a reflection of the provided signal from each antenna at the corresponding receiver;

    measuring phase variances between the reflected signals processed by each receiver; and

    adjusting compensation algorithms for each radar return processing channel based on the measured phase variances.

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