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Decorrelation tolerant coherent radar altimeter

  • US 4,851,852 A
  • Filed: 04/20/1987
  • Issued: 07/25/1989
  • Est. Priority Date: 04/20/1987
  • Status: Expired due to Fees
First Claim
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1. A coherent radar altimeter system comprising in combination:

  • signal generating means for generating a series of coherent radar pulse signals having a high frequency carrier in which said high frequency carrier is comprised of two co-existing high frequency signal components of a first and a second frequency, respectively, closely spaced in frequency;

    means to transmit said series of coherent radar pulses;

    means for receiving return signal pulses, said return signal pulses being said transmitted pulses reflected from a target surface;

    means for processing said return signal pulses, including means for producing from said return signal pulses a signal which is representative of the difference between first and second return signal components of said returned signal pulses in which said first return signal component is of said first frequency and said second return signal component is of said second frequency.

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