SL876Q5-A
Product User Guide
1VV0301333 Rev. 2
Page 64 of 68
2017-06-27
SBAS
Satellite Based Augmentation System
A system that uses a network of ground stations and geostationary
satellites to provide differential corrections to GNSS receivers. These
corrections are transmitted on the same frequency as navigation signals,
so the receiver can use the same front-end design to process them.
Current examples are WAAS, EGNOS, MSAS, and GAGAN.
Server-based
Ephemeris prediction
data
Extended Ephemeris (i.e. predicted) data, calculated by a server and
provided to the receiver over a network. It is usually useful for up to 14
days. See AGPS.
TCXO
Temperature-Compensated Crystal Oscillator
Tracking Sensitivity
The lowest signal level at which a GNSS receiver is able to maintain
tracking of a satellite signal after acquisition is complete.
TTFF
Time to First Fix
The elapsed time required by a receiver to achieve a valid position solution
from a specified starting condition. This value will vary with the operating
state of the receiver, the length of time since the last position fix, the
location of the last fix, and the specific receiver design.
A standard reference level of -130 dBm is used for testing.
UART
Universal Asynchronous Receiver/Transmitter
An integrated circuit (or part thereof) which provides a serial
communication port for a computer or peripheral device.
WAAS
Wide Area Augmentation System
The North American SBAS system developed by the US FAA (Federal
Aviation Administration).
Warm Start
A warm start occurs when a receiver begins operation with known (at least
approximately) time and position, but unknown ephemeris data, typically
after being sent a restart command. See Restart.
Summary of Contents for SL876Q5-A
Page 1: ...SL876Q5 A Product User Guide 1VV0301333 Rev 2 2017 06 27...
Page 68: ......
