Method for determining aircraft flight altitude

Details Method for determining aircraft flight altitude Method for determining aircraft flight altitude

1987-11-12

1990-05-01

Blum, Theodore M.

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

Directive

Position indicating

G01S 302

Patent

active

049222589

ABSTRACT:
A method for determining the flight altitude h above ground of an aircraft equipped with a radar altimeter and an additional (baro-inertial) altitude measuring device or a course and position reference system capable of determining altitude. The method relies upon restriction of high-frequency emissions from the radar altimeter to very short periods of time. The radar altimeter measures h.sub.RO within the high-frequency intermission intervals to calibrate the altitude value supplied by the other altitude-measuring device. The method permits the omission of any radar altimeter from aircraft-launched missiles without degrading system performance.

REFERENCES:
patent: 4144571 (1979-03-01), Webber
patent: 4431994 (1984-02-01), Gemin

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