A process to determine temporal changes in retransmission and propagation of signals, to measure distances, synchronize actuators, and georeferencing, the process comprising the steps of: a) providing a remote repeater, remote and inaccessible in space, and four reference bases (A, B, C, D) on the ground at known geographic positions and visible from the remote repeater, every three of them not collinear, wherein the remote repeater is configured to receive and retransmit time coded signals, wherein a receiver device for the coded time signals and a precision clock are installed in each reference base (A, B, C, D) and wherein the precision clocks of the reference bases (A, B, C, D) are synchronized to each other; b) emitting, at a reference instant, and from a transmitter device provided at one of the reference bases (A, B, C, D) a coded time signal containing an identification of the emitting reference base and of the instant of emission and receiving and retransmitting the coded time signal by the remote repeater; c) receiving the coded time signal retransmitted by the remote repeater in the receiver device of each reference bases (A, B, C, D), and determining in each reference base (A, B, C, D) a time difference between a time coded in the coded time signal received from the remote repeater and a respective time generated locally by the precision clock of the respective reference base (A, B, C, D); d) systematically attributing to the time differences different arbitrary values of a change in time to obtain one or more attributed temporal changes; e) calculate, for each one of the attributed temporal change, one respective position difference for the repeater station obtained with the use of two distinct sets of three reference bases (A, B, C and A, B, D; A, B, C and B, C, D; A, B, D and B, C, D); f) identifying which one of the attributed temporal changes results in a minimum difference between the two positions of the remote repeater, obtained using the two distinct sets of three reference bases (A, B, C and A, B, D; A, B, C and B, C, D; A, B, D and B, C, D); and g) utilizing the temporal change identified in step f) to determine the position of the remote repeater. a) providing a remote repeater, remote and inaccessible in space, and four reference bases (A, B, C, D) on the ground at known geographic positions and visible from the remote repeater, every three of them not collinear, wherein the remote repeater is configured to receive and retransmit time coded signals, wherein a receiver device for the coded time signals and a precision clock are installed in each reference base (A, B, C, D) and wherein the precision clocks of the reference bases (A, B, C, D) are synchronized to each other; b) emitting, at a reference instant, and from a transmitter device provided at one of the reference bases (A, B, C, D) a coded time signal containing an identification of the emitting reference base and of the instant of emission and receiving and retransmitting the coded time signal by the remote repeater; c) receiving the coded time signal retransmitted by the remote repeater in the receiver device of each reference bases (A, B, C, D), and determining in each reference base (A, B, C, D) a time difference between a time coded in the coded time signal received from the remote repeater and a respective time generated locally by the precision clock of the respective reference base (A, B, C, D); d) systematically attributing to the time differences different arbitrary values of a change in time to obtain one or more attributed temporal changes; e) calculate, for each one of the attributed temporal change, one respective position difference for the repeater station obtained with the use of two distinct sets of three reference bases (A, B, C and A, B, D; A, B, C and B, C, D; A, B, D and B, C, D); f) identifying which one of the attributed temporal changes results in a minimum difference between the two positions of the remote repeater, obtained using the two distinct sets of three reference bases (A, B, C and A, B, D; A, B, C and B, C, D; A, B, D and B, C, D); and g) utilizing the temporal change identified in step f) to determine the position of the remote repeater.