The invention relates to a method of measuring a distance between two
radio-communication devices (1, 2), consisting in measuring a radio
signal exchange delay. According to the invention, the time-of-flight of
the signals is calculated from the exchange delay and subsequently
corrected using an analysis of a single channel measuring frame that is
transmitted between the two devices. The corrected time-of-flight
corresponds to the shortest propagation path followed by the radio
signals. In the majority of radio transmission medium configurations, the
corrected time-of-flight is a straight line measurement of the distance
separating the two devices (1, 2).