Abstract: An electromagnetic method for detecting and/or locating a person constituting a non-cooperative target, in which an electromagnetic signal is transmitted (1) in the vicinity of a search zone (N), and the signal returned by said zone (N) is detected (2) in the vicinity thereof, the method being characterized in that transmission and reception are performed by means of at least two distinct antennas, each signal obtained in this way is filtered by a lowpass or a bandpass filter (12) so as to extract therefrom components corresponding to human movement, and in that each filtered signal obtained in this way is processed (14) to deduce therefrom the presence of a person and/or to locate that person. The system enables the method to be implemented. Application to locating avalanche victims.