Gnss Performance - Quectel UC20 Hardware Design

4.2. GNSS Performance

The following table shows UC20 GNSS performance.
Table 22: GNSS Performance
Parameter
Sensitivity
(GNSS)
TTFF
(GNSS)
Accuracy
(GNSS)
NOTES
1. Tracking sensitivity: the lowest GPS signal value at the antenna port for which the module can keep
on positioning for 3 minutes.
2. Reacquisition sensitivity: the lowest GPS signal value at the antenna port for which the module can
fix position again within 3 minutes after loss of lock.
3. Cold start sensitivity: the lowest GPS signal value at the antenna port for which the module fixes
position within 3 minutes after executing cold start command.
UC20_Hardware_Design
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Description
Cold start
Reacquisition
Tracking
Cold start
@open sky
Warm start
@open sky
Hot start
@open sky
CEP-50
Confidential / Released
Conditions
Autonomous
With LNA
Autonomous
With LNA
Autonomous
With LNA
Autonomous
XTRA enabled
Autonomous
XTRA enabled
Autonomous
XTRA enabled
Autonomous
@open sky
UMTS/HSPA Module Series
UC20 Hardware Design
Typ. Unit
-144 dBm
-147 dBm
-154 dBm
-159 dBm
-155 dBm
-161 dBm
32 s
22 s
29 s
3 s
2.5 s
2 s
<1.5 m
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