The signals from _____ GPS satellites are used to determine the accurate position of a GPS receiver.
A) three
B) four
C) five
D) none of the above

Question

Quizplus · Accepted Answer

Four GPS satellites are needed to determine the accurate position of a GPS receiver because three satellites provide a 2D position (latitude and longitude), and the fourth satellite is used to determine altitude and correct any timing errors.

The Signals from _____ GPS Satellites Are Used to Determine