A method for avoiding a flying intercepting vehicle by an airborne moving body, said airborne moving body comprising: - automatic piloting means; - emitting and receiving antennas for electromagnetic signals, called detection antennas, able to emit electromagnetic signals under the form of a beam of electromagnetic waves pointed ahead of said airborne moving body; - at least one altimetry antenna for measuring the height of said airborne moving body above the ground; and - an emitting-receiving chain shared between the detection antennas and the at least one altimetry antenna, wherein the following steps are automatically carried out: - by means of at least one of said detection antennas, at least one electromagnetic signal is emitted ahead of the airborne moving body, the frequency of which is temporally modulated; - by at least one of said detection antennas, at least one reflected electromagnetic signal is received, corresponding to the reflection of said electromagnetic signal emitted on said intercepting vehicle; - from said emitted and reflected electromagnetic signals (9, 10), at least one analysis signal is formed, the frequency of which corresponds to the deviation of frequencies (Δ f 1, Δ f 2) between the frequencies of said emitted and reflected signals; - a spectrum analysis of said analysis signal is carried out for determining at least one value of said deviation of frequencies (Δ f 1, Δ f 2) and for eliminating the ground echo; - from said determined value of said deviation of determined frequencies (Δ f 1, Δ f 2), the value is calculated of at least one evolution parameter ( R, Vr) for said intercepting vehicle relative to said airborne moving body; and - the incoming direction ( θo, φo) of said vehicle is evaluated relative to said airborne moving body, characterized: - in that said emitted electromagnetic signal is a sinusoidal signal being cut in pulses, the frequency of which varies linearly as a function of the time according to a predetermined modulation law, in such a way that said reflected electromagnetic signal is also a sinusoidal signal being cut in pulses, the frequency of which varies according to the same predetermined modulation law; and - in that the following steps are further exclusively carried out: • from at least the determined value of said evolution parameter ( R, Vr) and the incoming direction ( θo, φo) of said vehicle, an order of avoidance is determined provided for said automatic piloting means, in such a way that said airborne moving body automatically carries out an avoidance maneuver for said vehicle; • the height of said airborne moving body above the ground is measured by said at least one altimetry antenna. - automatic piloting means; - emitting and receiving antennas for electromagnetic signals, called detection antennas, able to emit electromagnetic signals under the form of a beam of electromagnetic waves pointed ahead of said airborne moving body; - at least one altimetry antenna for measuring the height of said airborne moving body above the ground; and - an emitting-receiving chain shared between the detection antennas and the at least one altimetry antenna, - by means of at least one of said detection antennas, at least one electromagnetic signal is emitted ahead of the airborne moving body, the frequency of which is temporally modulated; - by at least one of said detection antennas, at least one reflected electromagnetic signal is received, corresponding to the reflection of said electromagnetic signal emitted on said intercepting vehicle; - from said emitted and reflected electromagnetic signals (9, 10), at least one analysis signal is formed, the frequency of which corresponds to the deviation of frequencies (Δ f 1, Δ f 2) between the frequencies of said emitted and reflected signals; - a spectrum analysis of said analysis signal is carried out for determining at least one value of said deviation of frequencies (Δ f 1, Δ f 2) and for eliminating the ground echo; - from said determined value of said deviation of determined frequencies (Δ f 1, Δ f 2), the value is calculated of at least one evolution parameter ( R, Vr) for said intercepting vehicle relative to said airborne moving body; and - the incoming direction ( θo, φo) of said vehicle is evaluated relative to said airborne moving body, - in that said emitted electromagnetic signal is a sinusoidal signal being cut in pulses, the frequency of which varies linearly as a function of the time according to a predetermined modulation law, in such a way that said reflected electromagnetic signal is also a sinusoidal signal being cut in pulses, the frequency of which varies according to the same predetermined modulation law; and - in that the following steps are further exclusively carried out: • from at least the determined value of said evolution parameter ( R, Vr) and the incoming direction ( θo, φo) of said vehicle, an order of avoidance is determined provided for said automatic piloting means, in such a way that said airborne moving body automatically carries out an avoidance maneuver for said vehicle; • the height of said airborne moving body above the ground is measured by said at least one altimetry antenna. • from at least the determined value of said evolution parameter ( R, Vr) and the incoming direction ( θo, φo) of said vehicle, an order of avoidance is determined provided for said automatic piloting means, in such a way that said airborne moving body automatically carries out an avoidance maneuver for said vehicle; • the height of said airborne moving body above the ground is measured by said at least one altimetry antenna.