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Self-calibrating interferometric synthetic aperture radar altimeter

  • US 7,218,268 B2
  • Filed: 05/14/2003
  • Issued: 05/15/2007
  • Est. Priority Date: 05/14/2003
  • Status: Expired due to Term
First Claim
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1. A method of remotely sensing terrain elevation, comprising the steps of:

  • sampling returns from radar scatterers associated with the terrain along multiple lanes using first and second channels that overlap to form a cross-shaped antenna pattern; and

    analyzing the returns to determine the elevation according to one or more or the following modalities;

    phase monopulse (PM),amplitude monopulse (AM), andtime delay response (TDR).

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