Question

—clock is used in gps​

Answer 1

Answer:

Atomic clock is used in GPS.

Answer 2

Answer:

atomic clock

Explanation:

The GPS clock system is based on atomic clock technology. Each of the 31 working satellites in the GPS network has a highly-accurate atomic clock built-in. These atomic clocks are synchronized and guided by a single master clock on the ground which is controlled by the United States Naval Observatory.