Garmin Portable GPS from Why GPS http://www.WhyGPS.com/GPSInfo/GarminPortableGPS/index.php http://www.WhyGPS.com/rss/GarminPortableGPSArticles.xml Garmin Portable GPS from Why GPS GPS - How It Works In this second of a three part series we're going to go over how GPS receivers actually measure distance. A lot of math and science goes into this stuff so sit back and get ready to strain your brain. At any given time, let's choose midnight for this example, the satellite begins transmitting a Thu, 04 Jun 2009 23:00:36 -0600 http://www.WhyGPS.com/GPSInfo/32.php http://www.WhyGPS.com/GPSInfo/32.php GPS Systems and How They Work GPS stands for global positioning system, a system that has been established and is managed by the Department of Defense. The GPS system utilizes satellites that have been put into orbit that help people determine their exact positioning on the plane t- whether it be for the purposes of navigation, Thu, 04 Jun 2009 23:00:36 -0600 http://www.WhyGPS.com/GPSInfo/49.php http://www.WhyGPS.com/GPSInfo/49.php Everything here is © Why GPS, Copyright 2009, All Rights Reserved Worldwide.