What is an important consequence of multipath error in GPS systems?

Multipath error occurs in GPS systems when satellite signals bounce off surfaces, such as buildings or trees, before they reach the GPS receiver. This phenomenon causes the receiver to calculate its position based on several delayed signals rather than the direct line-of-sight signal, leading to discrepancies. As a result, the location readings are distorted, causing the GPS to report an inaccurate position. This error is particularly problematic in urban environments or areas with smooth reflective surfaces, where signals may take multiple paths to reach the receiver. Understanding multipath error is crucial for accurate GPS measurements, and impacts applications ranging from navigation to precise location tracking.