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Method and apparatus for calibrating an electronically scanned reflector

  • US 6,320,538 B1
  • Filed: 04/07/2000
  • Issued: 11/20/2001
  • Est. Priority Date: 04/07/2000
  • Status: Expired due to Term
First Claim
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1. A method for calibrating an electronically scanned reflector (ESR) antenna including a reflector and a phased array feed having a plurality of antenna elements, comprising the steps of:

  • measuring a mechanical displacement associated with a plurality of points on the reflector and a plurality of points on the phased array feed, said measuring step resulting in a plurality of displacement values;

    analyzing said plurality of displacement values to ascertain a type of distortion, if any, within the reflector and a type of distortion, if any, within the phased array feed; and

    determining compensation values for use in connection with said plurality of antenna elements for compensating for mechanical distortions within said ESR antenna system based on the types of distortion ascertained in said step of analyzing, said step of determining compensation values includes determining a set of compensation values for each of a plurality of antenna beam positions to be supported by said ESR antenna system and storing said compensation values in memory in association with corresponding antenna beam positions for later use in generating antenna beams in said antenna beam positions.

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