Method and device for automatically determining an erroneous height value of a radioaltimeter mounted on an aircraft
US8723695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jul 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/882
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for automatically detecting an erroneous height value supplied by a radio altimeter mounted on an aircraft. The method includes measuring, during the aircraft's approach phase with a view to landing, the duration between the times when a first predetermined altitude threshold and a second predetermined altitude threshold are reached. This duration is measured by taking into account current height values supplied by the radio altimeter. The method then includes comparing the measured duration to a predetermined duration reference time, which is lower than a flight duration that would allow the aircraft to descend from the first predetermined altitude threshold to the second predetermined altitude threshold at a maximum vertical speed. An erroneous height value is detected if the measured duration is lower than the predetermined duration reference time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.