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In-flight antenna optimization

  • US 5,929,810 A
  • Filed: 12/19/1997
  • Issued: 07/27/1999
  • Est. Priority Date: 12/19/1997
  • Status: Expired due to Term
First Claim
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1. A method for optimizing an aircraft phased array radar system, the system being operative to produce a transmit radiation pattern having a main lobe in a desired direction, the method comprising the steps of:

  • synthesizing a first RF transmission signal having a notch in the desired direction;

    transmitting said first transmission signal through the phased array antenna;

    receiving through the antenna first RF return signal;

    processing said first return signal to compute a set of feeding coefficients having a single feeding coefficient for each element of the array, said processing including the forming of an inverse radiation pattern having the main lobe in place of the notch;

    transmitting a second signal having said transmit radiation pattern with said main lobe; and

    applying said coefficients to subsequently received return signals to correct for aircraft induced distortions and misalignments.

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