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