Title:
CLOSING-TIME INDUCTION OR POSITION REGULATOR FOR AIRCRAFT
Document Type and Number:
Japanese Patent JPS6188172
Kind Code:
A
Abstract:
An aircraft position determining system including an on-board radio altimeter which cooperates with a ground based transponder/beacon located at a position A. The radio altimeter is adapted as a distance meter and comprises means (9, 14, 15, 16) for shifting the frequency of the local oscillation signal. The system has a range sufficient to enable it to operate in a second predetermined volume defined with respect to the position A which includes a first volume defined by the lateral distance accuracy (d) and vertical distance accuracy (h) of the position determined by an independent on-board guidance device. The exact position of the aircraft when close to A is determined by at least two successive measurements of distance from to the position A.
Inventors:
JIYAN PIEERU TOMASHI
Application Number:
JP11331485A
Publication Date:
May 06, 1986
Filing Date:
May 28, 1985
Export Citation:
Assignee:
PHILIPS NV
International Classes:
G01S13/74; G01C21/00; G01C21/16; G01S5/14; G01S13/87; (IPC1-7): G01S13/74; G01C21/00
Attorney, Agent or Firm:
Akihide Sugimura