Aircraft ground closure rate filtering method and means

Details Aircraft ground closure rate filtering method and means Aircraft ground closure rate filtering method and means

1975-09-15

1977-04-05

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

23515022, 343 12A, G01S 904, G06F 1550

Patent

active

040165655

ABSTRACT:
Ground closure rate between an aircraft and underlying terrain is obtained by differentially combining a radio altimeter derived rate signal and a barometric altitude rate signal to obtain a rate of change of ground profile signal. The ground profile rate is filtered on an autocorrelation basis to obtain a profile rate signal devoid of amplitude pulses introduced by sharp or discontinuous terrain features and recombined with barometric rate to obtain ground closure rate. The filtering technique imposes no rate limitation on the radio rate signal.

REFERENCES:
patent: 2809340 (1957-10-01), Bernhart
patent: 2930035 (1960-03-01), Altekruse
patent: 3715718 (1973-02-01), Astengo
patent: 3946358 (1976-03-01), Bateman
patent: 3947808 (1976-03-01), Bateman

Affiliated with

Also associated with

Rating

Aircraft ground closure rate filtering method and means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aircraft ground closure rate filtering method and means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aircraft ground closure rate filtering method and means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2270234