Combined radar/barometric altimeter

Details Combined radar/barometric altimeter Combined radar/barometric altimeter

1981-05-06

1984-02-14

Cangialosi, Sal

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

340970, G01J 1308, G06F 1550

Patent

active

044319940

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.

REFERENCES:
patent: 2930035 (1960-03-01), Altekruse
patent: 3140483 (1959-04-01), Sikora et al.
patent: 3140483 (1964-05-01), Sikora et al.
patent: 3936797 (1976-02-01), Andresen, Jr.
patent: 3947808 (1976-03-01), Bateman
patent: 3958108 (1976-05-01), Shimamura
patent: 4016565 (1977-04-01), Walker
patent: 4292671 (1981-09-01), Evans et al.
patent: 4319218 (1982-03-01), Bateman

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