time to first fix (GPS) (TTFF)

Time to First Fix (TTFF) is the time it takes for a GPS receiver to determine its position for the first time after it is switched on.

The Time to First Fix is normally several minutes, but can be shortened to 1 second by Assisted GPS( AGPS). Shortening the TTFF time is especially important in emergency situations. There are techniques that can reduce the TTFF to about 5 seconds without sacrificing precision in GPS positioning.

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Informations:

Englisch:	time to first fix (GPS) - TTFF
Updated at:	06.02.2008
#Words:	72
Links:	global positioning system (satellite comm.) (GPS), receiver, second (s), assisted GPS (AGPS), GPS positioning
Translations:	DE
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