How accurate is GPS?
Introduction The Global Positioning System (GPS) is a navigation system based on satellites. The GPS network operates on 24 satellites orbiting the earth. This system was initially developed by the US Department of Defense for military purposes. However the system was extended in the 1980s for civilian use. GPS works in all weather conditions and all over the world. GPS does not have any subscription fee of set up charges. How GPS Works GPS works through the signals the satellites transmit to earth. In other words, GPS receivers take in this information to calculate the users position by the method of triangulation. The GPS receiver needs signals from at least three satellites for this. How Accurate is it? The new generation of GPS receivers is very accurate on account of their multi-channel design. For instance Garmin has twelve parallel channel receivers that maintain strong links with the satellite network even among tall buildings or dense foliage. These receivers average accuracy
