Embedded Artists GPS Receiver Board EA-ACC-023 EA-ACC-023 Datenbogen
Produktcode
EA-ACC-023
7
7
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FGPMMOPA6H Data Sheet
GlobalTop Technology
Ver. V0A
Document #
1.4 Multi-tone active interference canceller
Because different application (Wi-Fi, GSM/GPRS, 3G/4G, Bluetooth) are integrated into navigation
system, the harmonic of RF signal will influence the GPS reception, The multi-tone active
interference canceller (abbr: MTAIC) can reject external RF interference which come from other
active components on the main board, to improve the capacity of GPS reception without any needed
HW change in the design. PA6H can cancel up to 12 independent channels interference continuous
wave (CW)
system, the harmonic of RF signal will influence the GPS reception, The multi-tone active
interference canceller (abbr: MTAIC) can reject external RF interference which come from other
active components on the main board, to improve the capacity of GPS reception without any needed
HW change in the design. PA6H can cancel up to 12 independent channels interference continuous
wave (CW)
1.5 1PPS
A pulse per second (1 PPS) is an electrical signal that very precisely indicates the start of a second.
Depending on the source, properly operating PPS signals have typical accuracy ranging 10ns.
1 PPS signals are used for precise timekeeping and time measurement. One increasingly common
use is in computer timekeeping, including the NTP protocol. A common use for the PPS signal is to
connect it to a PC using a low-latency, low-jitter wire connection and allow a program to synchronize
to it:
PA6H supply the high accurate 1PPS timing to synchronize to GPS time after 3D-Fix.
A power-on output 1pps is also available for customization firmware settings.
A power-on output 1pps is also available for customization firmware settings.
1.6 AGPS Support for Fast TTFF (EPO
™)
The AGPS (EPO™) supply the predicated
E
xtended
P
rediction
O
rbit data to speed TTFF ,users can
download the EPO data to GPS engine from the FTP server by internet or wireless network ,the GPS
engine will use the EPO data to assist position calculation when the navigation information of
satellites are not enough or weak signal zone . About the detail, please link
Gtop website
.
1.7 EASY™
The EASY™ is embedded assist system for quick positioning, the GPS engine will calculate and predict
automatically the single emperies ( Max. up to 3 days )when power on ,and save the predict
information into the memory , GPS engine will use these information for positioning if no enough
information from satellites, so the function will be helpful for positioning and TTFF improvement
under indoor or urban condition.