The Antaris GPS technology, jointly developed by u-blox and Atmel, now features an innovative 'aiding' functionality, which it says makes time to first fix within four seconds a reality.
Aiding information, supplied from an external source, for example a base station, reduces the time to first accurate fix. The aiding parameters provide ephemeris, almanac, rough initial position, clock drift and time, satellite status and, if available, a precise time synchronisation signal. With this information, the GPS receiver has immediate knowledge of the satellites to search and track.
Applications that require instant position fixes are, for example, the US E911/E112 emergency caller localisation in mobile phones, location-based services without waiting time, and untethered asset tracking devices.
The aiding feature is available in the u-blox Antaris GPS receiver macro components TIM-LP, TIM-LF and TIM-LC as well as on the Antaris GPS chipset available from Atmel without additional cost.
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