In the process of generating a GPS fix, what is the term for using LOPs from separate satellites?

The term for using lines of position (LOPs) from separate satellites to determine a GPS fix is trilateration. This method involves calculating the precise location of a receiver by measuring the distances from multiple satellites. Each satellite provides a sphere in which the receiver can be located based on the distance measured from that satellite, and the intersection of these spheres determines the receiver's exact position in three-dimensional space.

Trilateration is essential in GPS technology because it relies on a geometric interpretation of the data obtained from the satellites. By using the time it takes for signals to travel from the satellites to the receiver, the system can accurately compute the distance to each satellite. As multiple satellites' data is combined, the unique position of the receiver can be pinpointed.

In contrast, triangulation typically refers to determining a position based on angles from known points, which is not the method employed in GPS. Conversion and mapping do not pertain to the process of determining a position using satellite data in the context of GPS navigation. Thus, trilateration is the correct term for the described process.