×

Method and apparatus for estimating terrain elevation using a null response

  • US 7,639,175 B1
  • Filed: 09/27/2007
  • Issued: 12/29/2009
  • Est. Priority Date: 09/27/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method of sensing elevation of terrain using an airborne weather radar, the method comprising:

  • sweeping a radar beam to cut through a horizontal plane with the airborne weather radar;

    receiving radar returns in response to the swept radar beam and providing the radar returns to a processor;

    using the processor to separate a first portion of the radar returns from a second portion of the radar returns;

    adjusting the second portion to provide an adjusted second portion;

    summing the first portion with the adjusted second portion to obtain a null response; and

    analyzing changes in the null response as the radar beam is swept to cut through the horizontal plane to sense elevation of the terrain.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×