Question

Two of the major sources used today for obtaining information to create computer maps are satellites and _____________.

Answer 1

the global positioning system

Step-by-step explanation:

because it is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment.Feb 22, 2021

Answer 2

I think its radar, I'm not too sure though