High accuracy radar altimeter using automatic calibration

Details High accuracy radar altimeter using automatic calibration High accuracy radar altimeter using automatic calibration

2009-06-23

2011-10-25

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Altimeter

C342S174000

Reexamination Certificate

active

08044842

ABSTRACT:
A method of compensating for component errors within a radar altimeter is described. The method includes periodically switching transmit pulses from a transmit antenna to a programmable delay device, calculating an altitude based on a transmit pulse received from the programmable delay device, comparing the calculated altitude to an expected altitude, the expected altitude based on a pre-set delay through the programmable delay device, and compensating an altitude measured by the radar altimeter, based on transmit pulses output through the transmit antenna, by an error correction amount based on a difference between the calculated altitude and expected altitudes.

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