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

4

GNSS Receiver

4.1. General Description

EG91 series module includes a fully integrated global navigation satellite system solution that supports
Gen8C-Lite of Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS).
EG91 series module supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data
update rate via USB interface by default.
By default, EG91 series module 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 GNSS performance of EG91 series module.
Table 23: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@open sky
TTFF
(GNSS)
Warm start
@open sky
EG91_Series_Hardware_Design
Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
LTE Standard Module Series
EG91 Series Hardware Design
Typ.
-146
-157
-157
34.6
11.57
26.09
3.7
Unit
dBm
dBm
dBm
s
s
s
s
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