ALERT

[WEBINAR] See the Whole Story: The Case for a Visualization Platform

Global Positioning System (GPS)

Definition - What does Global Positioning System (GPS) mean?

The Global Positioning System (GPS) is a navigation system designed by the U.S. Department of Defense that makes use of satellites orbiting the earth and was primarily used in vital military applications. It was developed in 1973 as a method to overcome old navigation systems. It became fully operational in 1994, at which time it was also made available to civilians.

Techopedia explains Global Positioning System (GPS)

There are 24 functional solar-powered satellites orbiting the planet twice in a day, 21 of which are always active. Three other satellites act as spares. Each satellite contains an atomic clock, a computer and a radio, which is used to broadcast the current time and its continuously changing location. Every satellite is operationally synchronized to send data at the same time. They also make corrections once a day by checking their own sense of location and time against that of a ground station's. When the data is broadcasted, GPS receivers get the data and use it to estimate their own location by triangulating the distance using at least three satellites. A GPS device determines the distance from each satellite and uses this information to pinpoint a specific location. This is also known as trilateration.

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.