Gnss Receiver; General Description; Gnss Performance - Quectel BG77 Hardware Design

4

GNSS Receiver

4.1. General Description

BG77 includes a fully integrated global navigation satellite system solution that supports Gen9 VT of
Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS).
BG77 supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via
USB interface by default.
By default, BG77 GNSS engine is switched off. It has to be switched on via AT command. For more
details about GNSS engine technology and configurations, please refer to document [3].

4.2. GNSS Performance

The following table shows the GNSS performance of BG77.
Table 29: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@open sky
TTFF
(GNSS)
Warm start
@open sky
BG77_Hardware_Design
Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
LPWA Module Series
BG77 Hardware Design
Typ. Unit
TBD dBm
TBD dBm
TBD dBm
TBD s
TBD s
TBD s
TBD s
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