The Global Positioning System (GPS) is a space-based navigation system that
provides location and time information in all weather conditions, anywhere on or
The Global Positioning System (GPS) is a network of about 30 satellites orbiting
the Earth at an altitude of 20,000 km. The system was originally developed by ...
GPS was originally intended for military applications, but in the 1980s, the
government made the system available for civilian use. GPS works in any
The Global Positioning System satellites transmit signals to equipment on the
ground. GPS receivers passively receive satellite signals; they do not transmit.
Using a portable or handheld receiver unit that receives data from the closest satellites, the GPS unit triangulates the data to determine the unit's exact location (typically in latitude and longitude), elevation, speed, and time. Thus, the GPS unit you can buy over t... More »
As we'll see, the Global Positioning System is vast, expensive and involves a lot
of technical ingenuity, but the fundamental concepts at work are quite simple ...
Dec 12, 2014 ... A NASA expert explains why GPS needs 24 satellites to work. He explains how ...
Navigational Uses for Global Positioning Systems, or GPS
Today, all we need is a simple hand-held GPS (short for Global Positioning
System) receiver to figure out exactly where we are anywhere in the world. But
Oct 21, 2013 ... The Global Positioning System, or GPS, is pretty amazing and chances are, it's
playing a much greater role in your life than you realize.
Feb 4, 2015 ... Apps like HERE for Android are brilliant for finding your way around, but they
couldn't work without GPS (Global Positioning System).