Patent ID: 7109914

Claim:
A method of switching for carrying out switchover, on a radio frequency landing system of an aircraft, between at least: a first input of a radio frequency receiver of the radio frequency landing system, which input is connected to a first antenna disposed on a lower part of the aircraft and receives a first signal; and a second input of the radio frequency receiver of the radio frequency landing system, which input is connected to a second antenna disposed on an upper part of the aircraft and receives a second signal, wherein: on initialization, switchover occurs to the input whose signal exhibits the highest level; after the initialization phase: a first value of a parameter, in relation to the aircraft, and a second value of this same parameter, in relation to the runway, is determined; the difference between these first and second values is computed; and switchover occurs to one of said first and second inputs, as a function of this difference; and at least one hysteresis loop around the switching values is provided.