Method and system for geolocation of group-evolving terminals

A method for estimating a geographical position of a terminal of interest, from a panel of terminals of a wireless communication system, comprising:

• determining, for each terminal of the panel, a time signature comprising values representative of mobility phases of said each terminal measured independently by said each terminal by at least one sensor of said each terminal during a predetermined observation period;
• calculating values of a similarity criterion between the time signatures of the terminals of the panel, a value of the similarity criterion calculated for two terminals of the panel being representative of a probability of the two terminals moving together during the predetermined observation period;
• partitioning the terminals of the panel into groups according to the values of the similarity criterion;
• and
• estimating the geographical position of the terminal of interest according to geolocation data available for at least one other terminal of a group of interest to which the terminal of interest belongs.