High accuracy radar altimeter using automatic calibration
US8044842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/882
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.