Assisted GNSS | 早餐吃透透
A-GNSSworksbyprovidingthenecessarydatatothedeviceviaaradionetworkinsteadoftheslowsatellitelink,essentiallywarmingupthereceiverfora ...
System to improve the time-to-first-fix of a GNSS receiver
Assisted GPSAssisted GNSS (A-GNSS) is a GNSS augmentation system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a global navigation satellite system (GNSS). A-GNSS works by providing the necessary data to the device via a radio network instead of the slow satellite link, essentially "warming up" the receiver for a fix. When applied to GPS, it is known as assisted GPS or augmented GPS (abbreviated generally as A-GPS and less commonly as aGPS). Other local names include A-GANSS for Galileo and A-Beidou for BeiDou.
A-GPS is extensively used with GPS-capable cellular phones, as its development was accelerated by the U.S. FCCs 911 requirement to make cell phone location data available to emergency call dispatchers.[1]
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Assisted GNSS | 早餐吃透透
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