👉 Trilateration is a technique in signal processing that involves measuring and estimating the position of multiple radio transmitters or sources to improve the accuracy of a signal. This technique is often used in satellite navigation systems, where it allows for more precise positioning by tracking the movement of several satellites or other objects. The basic idea behind trilateration is to measure the positions of two or more nearby objects (in this case, the ground stations) and use these measurements to estimate the location of a third object.