Receiver Waas
2002
Does anyone know anything about GPS and others?
if so, what does this mean: "Garmin ® GPS is accurate 15 meters on average. Recent Garmin GPS with WAAS (Wide Area Augmentation System) capability can improve accuracy to less than three meters average, "says the 15 meters?" guess what means? and im even more confused when, with WAAS, "capability can improve accuracy within 3 meters on average. "? Im confused … any help is greatly appreciated!
Location GPS works by calculating your position based on satellite signals received by your GPS receiver. There are inherent inaccuracies in the calculations, but by the number of satellite signals, you may receive, the intensity signals, and several other factors of the inaccuracy can be reduced. The GPS calculates your position and realize that a certain latitude and longitude. When the screen says your "accurate to 15 meters", it means that your site has calculated that is 15 meters from the location is given by exact latitude and longitude he reported. WAAS (Wide Area Augmentation System) has nothing to do with a map view as one response said. WAAS is a system that was developed by the FAA to improve the accuracy of GPS such as aircraft could use the GPS for all phases their flight, including precision approaches. WAAS works by measuring the inaccuracy in GPS signals, calculate a correction factor and transmit a WAAS satellite. GPS receiver takes the GPS signals, calculates your position, then takes the signal and corrects the calculation WAAS GPS, it just made, then displays the results. On a consumer GPS with an accuracy of less than 3 meters, you must have WAAS.
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