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Altitude determining radar using multipath discrimination

  • US 4,595,925 A
  • Filed: 03/28/1983
  • Issued: 06/17/1986
  • Est. Priority Date: 03/28/1983
  • Status: Expired due to Fees
First Claim
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1. A height-determining radar, comprising a radar transmitter having a transmission site located at an altitude e above a reflecting surface, for emitting pulses of radiation;

  • a radar receiver having a reception site in proximity to said transmission site for detecting said pulses of radiation reflected from a target located at an altitude h above said reflecting surface;

    means for measuring the pulse width variation τ

    B from pulse to pulse of said received pulses of radiation;

    means for measuring the range R between said radar receiver reception site and said target; and

    means for calculating h from the relationship between τ

    B, R, e and h
    
    
    space="preserve" listing-type="equation">h=cR τ

    .sub.B /4e wherein c is the speed of light.

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