METHOD FOR THE CALIBRATION OF AN FM/CW TYPE RADIO ALTIMETER AND RADIO ALTIMETER DESIGNED FOR THE IMPLEMENTATION OF THIS METHOD

摘要

The invention relates to the radio altimeters which use a linear oscillator (3) to emit a signal in the teeth of scie.en more of the first oscillator (3) the radio altimeter comprises a second oscillator linear (3 ') in order to transmit, in synchronism with the first, a sawtooth signal of duration of the saw tooth td given; the bearings of the saw teeth of the two signals in the saw teeth are spaced apart by a value f. the test consists in obtaining by beating between the two signals in the saw teeth of a height h ′, to calculate a standard height he = td / df f. c. 2 where c is the speed of light and df, the duration of each saw tooth of the other signal.application to all the fm / cw radio altimeters.