Q1How does a radio altimeter function?AMeasures the Doppler shift of a CW transmissionBMeasures the Doppler shift of a pulse transmissionCMeasures the time from transmission to the reception of a CW frequency. Doppler shift - There has to be relative motion. Hence there is no Doppler shift in Radio Altimeter.
Q2How does a radio altimeter provide height measurements?AMeasuring the Doppler frequency shift in transmitted frequencyBMeasuring time diff. of a CW transmitted at fixed frequencyCMeasuring time diff. of a CW transmitted at changing frequency
Q3What is a radio altimeter?AAircraft based and indicates true altitudeBAircraft based and indicates pressure altitudeCAircraft based and indicates true height