| 摘要 |
Disclosed is a method for measuring an altitude of a radio altimeter. The radio altimeter according to the present invention comprises: a transmitting/receiving unit which transmits a radio frequency (RF) signal through an antenna installed on one side of a flight, and collects a receiving signal reflected from the surface or a structure in response to the RF signal; a signal processing unit which converts the collected receiving signal into an intermediate frequency (IF) bandwidth; and a controlling unit which selects the converted receiving signal as a valid receiving signal when the converted receiving signal is bigger than a predetermined threshold value, extracts a valid point which is bigger than the threshold value from the selected valid receiving signal, and measures an altitude by using one valid point selected from the extracted valid point. |
