Time to first fix
= Time to first fix
{wiki=Time_to_first_fix}
Time to First Fix (TTFF) is a term commonly used in the context of satellite navigation systems, such as GPS, to describe the duration it takes for a receiver to establish a location fix after it is turned on or loses its signal. In detail, TTFF can be influenced by various factors, including: 1. **Cold Start:** This is when the receiver has no prior information about its location or the current satellite positions.