Garmin iQue M5 Que Applications Guide - Page 51

APPENDIX > WHAT IS GPS? What is GPS? The Global Positioning System (GPS) is a satellitebased navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but the government made the system available for civilian use in the 1980s. GPS works in any weather condition, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS. For more information, visit http://www. garmin.com. At this time the system is still in the developmental stage with a goal of providing reliable signals with an accuracy of 7 meters (21-22 ft.) both horizontally and vertically 95% of the time. Current tests have shown the actual accuracy to be on the order of 2-3 meters. WAAS is only effective in North America. If you are located elsewhere, turn off WAAS for the most accurate location fix. See http://gps.faa.gov/Programs/ WAAS/waas.htm. What is WAAS? The Wide Area Augmentation System (WAAS) is an F.A.A. funded project to improve the overall integrity of the GPS signal. It is a space-based system that broadcasts integrity information and correction data as determined by ground reference stations. iQue M5 Que Applications Guide 47