Gnss Receiver; General Description; Gnss Performance - Quectel LPWA Series Manual

4

GNSS Receiver*

4.1. General Description

BG770A-GL supports GPS and GLONASS satellite systems using dedicated hardware accelerators in a
power and cost-efficient manner.
The module supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1 Hz data update
rate via debug UART interface by default.
By default, BG770A-GL GNSS engine is switched off. It has to be switched on via AT command. The
module does not support concurrent operation of WWAN and GNSS. For more details about GNSS
engine technology and configurations, see document [1].

4.2. GNSS Performance

The following table shows the GNSS performance of BG770A-GL.
Table 26: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@ open sky
TTFF
(GNSS)
Warm start
@ open sky
BG770A-GL_Hardware_Design
Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
LPWA Module Series
BG770A-GL Hardware Design
Typ.
-145
-153
-158
TBD
TBD
TBD
TBD
Unit
dBm
dBm
dBm
s
s
s
s
50 / 75