Terminal-guidance or position-adjustment system for aircraft usi

Details Terminal-guidance or position-adjustment system for aircraft usi Terminal-guidance or position-adjustment system for aircraft usi

1985-05-23

1987-07-07

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Combined with diverse type radiant energy system

342 63, G01S 1387

Patent

active

046790470

ABSTRACT:
An aircraft is equipped with a system of the FM-CW type including an on-board radio altimeter which cooperates with a transponder/beacon located at A. The radio altimeter is adapted for the measurement, alternately with the measurement of the altitude H, of the distance D in relation to point A, and of the angle .beta. in relation to a horizontal axis (46) linked to the transponder. The radio altimeter includes two aerials and a supplementary processing chain for the measurement of angle .beta.. The transponder is equipped with a base with two receiving/transmitting aerials (25, 27), switched alternately to sequentially operated circuitry in the transponder. Furthermore, the exact position of the aircraft within the vicinity of point A is determined by at least two measurements of distance D and of the angle .beta. in relation to the aerial base of the transponder.

REFERENCES:
patent: 3611367 (1971-10-01), Billottet
patent: 3998412 (1976-12-01), Baker et al.

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