Accession Number : ADD010951
Title : Combined Radar/Barometric Altimeter.
Descriptive Note : Patent
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Gemin,R A
Report Date : 14 Feb 1984
Pagination or Media Count : 5
Abstract : An altitude sensing arrangement which combines the advantages of a barometric altimeter with a radar altimeter. The apparatus monitors the radar altimeter's associated radar validity signal and selects the radar altimeter's reading when the validity signal indicates a valid condition. Alternately, when the validity signal does not indicate a valid condition, the invention computes the difference in barometric altitude since the last valid radar altimeter reading and sums this difference with the last valid reading from the radar altimeter to produce a combined altitude reading.
Descriptors : *Patents, *Barometers, *Radio altimeters, Warning systems, Barometric pressure, Radar signals, Memory devices, Low altitude, Airborne, Analog to digital converters, Comparators, Validation, Altitude, Inventions, Detection, Signals, Reading, Altimeters
Subject Categories : Infrared Detection and Detectors
Air Navigation and Guidance
Distribution Statement : APPROVED FOR PUBLIC RELEASE