Method of optronic systems synchronization and set of optronic systems synchronized according to such process

An optronic systems synchronization method of the type operating simultaneously on the same stage, each optoelectronic system being for transmitting and / or receiving light of a target in the scene and each optoelectronic system comprising an internal clock precision (36) and a clean module synchronizing the internal clock (36) with a reference time signal, the method being characterized in that it comprises the following steps: - reception and generation of a clock signal and reference by each synchronization module, the reference time signal being independent of optronic systems and equipment from a different optronic systems, and - synchronization of the internal clock of each optoelectronic system with the reference time signal by the modulus of synchronization.