GPS technology works by sending electromagnetic waves at what?

GPS technology relies on the principle of precise timing to determine location. Each satellite in the GPS constellation broadcasts signals that include the exact time the signal was transmitted and the satellite's position in space at that time. The receiver then calculates how long it took for the signal to reach it, allowing the device to triangulate its precise location based on the distance from multiple satellites.

The precise timing is critical because even a small error can lead to significant inaccuracies in determining position. By comparing the time the signal was sent with the time it was received, the GPS receiver can calculate the distance to each satellite. When at least four satellites are used, the receiver can determine its location in three dimensions (latitude, longitude, and altitude) with high accuracy.

In contrast, the other options do not accurately describe how GPS operates. Variable speeds, random times, or regular intervals do not capture the essential aspect of the precise timing required by GPS to function efficiently and accurately.