| 摘要 |
Disclosed are a radio altimeter using an adaptive threshold value and an operating method. The radio altimeter 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 generates the adaptive threshold value by using the converted receiving signal, and detects the receiving signal reflected from the surface among the receiving signal received through the antenna by using a basic threshold value, which is previously generated depending on an altitude measuring mode, or the adaptive threshold value. |
