Why is it important to have a sufficient number of satellites for GPS accuracy?

Having a sufficient number of satellites is crucial for improving GPS accuracy because it allows the system to triangulate a user’s position from various angles. With more satellites in view, the GPS receiver can calculate its position based on multiple signals rather than relying on a single signal from only one satellite. This triangulation enhances the precision of the location fix by allowing the system to compensate for errors in satellite positions and signal delays.

When the GPS receiver gets signals from several satellites, it can determine both the location and the elevation more accurately. The concept here is similar to drawing a triangle: at least three satellites allow for a two-dimensional fix, while four or more are needed to calculate a three-dimensional position including altitude. This additional data improves the overall reliability of the positioning system and helps to mitigate factors like multipath effects or atmospheric disruptions, leading to a more accurate and dependable navigation experience.

Other options may involve aspects of GPS functionality but do not directly address the critical role of having enough satellites for precise positioning.