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Recirculating delay line radar performance monitor

  • US 5,262,787 A
  • Filed: 02/10/1993
  • Issued: 11/16/1993
  • Est. Priority Date: 03/06/1987
  • Status: Expired due to Term
First Claim
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1. A radar performance monitor mounted near an antenna of a radar system comprising:

  • means for receiving a radar signal from said radar system antenna, said monitor operating asynchronous with said radar system;

    means coupled to said receiving means for converting said radar signal to an intermediate frequency (IF) signal;

    means coupled to said converting means for gating said IF signal to a recirculating loop when said IF signal exceeds a predetermined amplitude;

    said recirculating loop comprising a SAW delay line means for generating a plurality of simulated radar target return signals of equal amplitude by using a frequency of said received radar signal providing said frequency falls within a predetermined bandwidth of said SAW delay line means, said recirculating loop having a gain greater than unity for maintaining said generated signals of equal amplitude; and

    means coupled to said recirculating loop for transmitting said plurality of simulated radar target return signals to said radar system antenna for displaying said simulated radar target return signals on a display means of said radar system.

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