Gnss Receiver; General Description; Gnss Performance - Quectel EG91 Series Hardware Design

4

GNSS Receiver

EG91 includes a fully integrated global navigation satellite system solution that supports Gen8C-Lite of
Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS).
EG91 supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via
USB interface by default.
By default, EG91 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].
The following table shows GNSS performance of EG91.
Table 23: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@open sky
TTFF
(GNSS)
Warm start
@open sky
EG91_Hardware_Design

4.1. General Description

4.2. GNSS Performance

Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
57 / 93
LTE Module Series
EG91 Hardware Design
Typ. Unit
-146 dBm
-157 dBm
-157 dBm
34.6 s
11.57 s
26.09 s
3.7 s