Patent ID: 9726759
Date: 2017-08-08
CPC Classifications: G01S

Claim:
1. A process to determine temporal changes in retransmission and propagation of signals, to measure distances, synchronize actuators, and georeferencing, comprising the steps of: installing four reference bases, each of the four reference bases comprising a receiver device, wherein three of the four reference bases are not collinear, are positioned at known geographic positions, and are visible from a repeater station; emitting, from a transmitter device at a reference instant, a one time coded signal containing an identification of a corresponding one of the four reference bases and of the reference instant; receiving, in the receiver device at each one of the four reference bases, the one time coded signal as received and retransmitted by the repeater station; attributing, systematically, different arbitrary values to a change in time, phase or frequency to the repeater station to obtain one or more attributed temporal changes; calculating, for each one of the one or more attributed temporal changes, one respective position difference for the repeater station obtained with the use of two distinct sets of the three reference bases that are not collinear; identifying which one of the attributed temporal changes at the repeater station results in a minimum difference between two positions of the repeater station, wherein the two positions are obtained using the two distinct sets of the three reference bases that are not collinear; and utilizing the temporal changes to determine a position of the repeater station.