On-ground radio altimeter calibration system

Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system – By monitoring

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

342120, G01S 740

Patent

active

060087544

ABSTRACT:
To ensure that a radio altimeter indicates zero altitude when the aircraft is on the ground, an on-ground calibration system utilizes a calibration switch to initiate a calibration radio altimeter signal from the radio altimeter's transmitter section which is reflected off of the ground and received by the altimeter's receiver section. The time delay between transmission and reception of the signal is measured and a value representing the delay is stored in the altimeter's microprocessor. This value corresponds to zero altitude and can be used as the relative zero point for calculating altitudes of the aircraft when it is in flight.

REFERENCES:
patent: 3364437 (1968-01-01), Loposer
patent: 3535651 (1970-10-01), Peterson
patent: 3579281 (1971-05-01), Kam
patent: 3860925 (1975-01-01), Darboven, Jr.
patent: 4121213 (1978-10-01), Bush et al.
patent: 4272729 (1981-06-01), Riley
patent: 4367473 (1983-01-01), Marin et al.
patent: 4468638 (1984-08-01), Kyriakos
patent: 4488123 (1984-12-01), Kurihara
patent: 4503401 (1985-03-01), Kyriakos et al.
patent: 4593287 (1986-06-01), Nitardy
patent: 4683473 (1987-07-01), Huagland
patent: 4754277 (1988-06-01), Voyce
patent: 4806935 (1989-02-01), Fosket et al.
patent: 4825214 (1989-04-01), Dejaegher
patent: 4904956 (1990-02-01), Dennis
patent: 4931749 (1990-06-01), Walters
patent: 4998217 (1991-03-01), Holcomb
patent: 5160933 (1992-11-01), Hager
patent: 5175509 (1992-12-01), Taylor
patent: 5210539 (1993-05-01), Voyce
patent: 5252981 (1993-10-01), Grein
patent: 5300934 (1994-04-01), Asbell et al.
patent: 5369376 (1994-11-01), Leblebiciogiu
patent: 5440275 (1995-08-01), Erb
patent: 5719582 (1998-02-01), Gray

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

On-ground radio altimeter calibration system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On-ground radio altimeter calibration system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-ground radio altimeter calibration system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2385479

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.