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Delay compensated doppler radar altimeter

  • US 5,736,957 A
  • Filed: 05/28/1996
  • Issued: 04/07/1998
  • Est. Priority Date: 06/30/1995
  • Status: Expired due to Term
First Claim
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1. A delay compensated Doppler radar altimeter for determining the elevation of successive ground scatterers scanned from an above-ground moving platform having when in motion an along-track direction relative to the scatterers, said altimeter comprising:

  • means for providing a downwardly directed illuminating wavefront;

    means for receiving reflected signals from the scatterers returned to the altimeter;

    means for coherently processing the returned signals;

    means for introducing a range curvature correction in said coherently processing means;

    means for converting radar range to elevation for the scatterers located within the region under illumination; and

    means for combining the ranges measured for each of the scatterers over an illumination history.

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