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Radar systems

  • US 4,303,920 A
  • Filed: 09/06/1979
  • Issued: 12/01/1981
  • Est. Priority Date: 09/09/1978
  • Status: Expired due to Term
First Claim
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1. A radar system including an antenna adapted to provide two beams, one of which covers a higher elevation than the other, producing means for producing two successive radar pulses, one of which is longer than the other, and switch means for selecting in dependence upon range the beam required and for selecting a predetermined pulse length for use therewith so that, when receiving signals from short ranges, said switch means provides the shorter pulse for use with the higher beam only, and, when receiving signals from longer ranges, the switch means provides the longer pulse for use with the lower beam only, and wherein, at intermediate ranges, the switch means provides the shorter pulse for use with the lower beam and provides the longer pulse for use with the higher beam.

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