Sony GPS-CS3KA Operating Instructions - Page 36

Additional information GPS The GPS (Global Positioning System) is a system that calculates geographical location from highly accurate US space satellites. This system allows you to pinpoint your exact location on the earth. x On error Error caused by the position of GPS satellites The GPS unit automatically triangulates your current location when the GPS unit receives radio signals from 3 or more GPS satellites. The triangulating error allowed by the GPS satellites is about 10 m (30 feet). Depending on the environment of the location you are in, the triangulation error may be greater. In this case, your actual location may not match the location on the map based on the GPS information. Error during the triangulation process The GPS unit acquires positioning information every 15 seconds during triangulation. There can be a slight time difference between when the positioning information is acquired and when images are taken. The supplied software (GPS Image Tracker) calculates the position where such images were taken based on the path between the two positions from which it acquires the positioning information, therefore, the actual recording location may not match exactly the location on the map based on the GPS information. 36