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Tag: TTFF

Garmin’s HotFix Ephemeris Data Prediction Reduces GPS Start Times

GPS navigation device manufacturers know that a quick time to first fix (TTFF) after a GPS receiver is switched on is a selling point with consumers. Running predictive calculations of satellite positions is one way to speed up the time taken to establish a lock on a few GPS satellites so that navigation can begin. It works by giving the restarted GPS device a head start by knowing where to […]

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