A method and device for identifying radar emission modes are provided. A first step selects a small number of candidate modes arising from a database after the interception of an unknown radar mode characterized by parameters; a second step carries out a scoring operation: by assigning a similarity index to each of said parameters, for each candidate mode, the index being the index of similarity between the moment of the parameter of the candidate mode and the moment of the same parameter of the unknown mode; and by calculating a conflict value between the parameters taken pairwise on the basis of the similarity indices of each of the parameters; a third step consists in iteratively grouping together the parameters such that on each iteration: the two parameters having the lowest conflict value are grouped together; the similarity indices of the other parameters are calculated for the grouping; the conflicts are updated by calculating the conflict value between the grouping and the other parameters; the lowest conflict value is memorized along with the similarity indices of the two grouped parameters; the identification of the radar mode consisting in choosing the grouping of parameters arising from iteration, the lowest conflict value of which is lower than a threshold, and in retaining the candidate mode having the highest similarity index from among the similarity indices memorized up to iteration.