Aircraft landing aid for zero-zero visibility landings

Details Aircraft landing aid for zero-zero visibility landings Aircraft landing aid for zero-zero visibility landings

1977-08-05

1978-07-18

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112R, G01S 116

Patent

active

041018931

ABSTRACT:
An aircraft landing system which provides a pilot a perspective view of a nway on which he intends to land under zero visibility conditions. The system includes a multiplicity of microwave transmitters spaced at known intervals along both sides of a runway and a timing generator which causes the microwave transmitters to transmit in sequence. The aircraft contains a monopulse receiver which provides conventional azimuth angle video information to a CRT display and also provides range video information to a Y sweep generator. The latter Y sweep generator generates a sweep voltage for the Y axis of the CRT display which is of sufficient length to display all transmitted pulses from all microwave transmitters in sequence with the correct relative spacing between microwave transmitters.

REFERENCES:
patent: 2463094 (1949-03-01), Field et al.
patent: 3237195 (1966-02-01), Schiffman
patent: 3952309 (1976-04-01), Lammers

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