Patent ID: 8718921
Filing Date: 2014-05-06
Classification: G01S

Abstract:
1. A method for avoiding a flying intercepting vehicle by an airborne moving body, said airborne moving body comprising automatic piloting means as well as emitting and receiving antennas for electromagnetic signals, wherein the following steps are automatically carried out: by means of at least one of said antennas, at least one electromagnetic signal is emitted ahead of the airborne moving body, a frequency of which is temporally modulated; by at least one of said antennas, at least one reflected electromagnetic signal is received, corresponding to the reflection of said electromagnetic signal emitted on said intercepting vehicle; and an incoming direction (θo, φo) of said vehicle is evaluated relative to said airborne moving body, wherein: said emitted electromagnetic signal is a sinusoidal signal being cut in pulses, the frequency of which varies linearly as a function of 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 the following steps are further automatically carried out: from said emitted and reflected electromagnetic signals, at least one analysis signal is formed, the frequency of which corresponds to the deviation of frequencies (Δf a spectrum analysis of said analysis signal is carried out for determining at least one value of said deviation of frequencies (Δf from said determined value of said deviation of determined frequencies (Δf 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.