Causes Of Poor Gnss Signals - Sierra Wireless AirPrime XS1110 User Manual

Development Kit User Guide
Table 5-2: Examples Where Poor GNSS Signals May Occur
Rev 2.0 Apr.20

Causes of Poor GNSS Signals

It is possible to have weak GNSS signal in the following situations:
Inside a tunnel, where the GNSS signal is blocked.
Underneath infrastructure (e.g. a bridge), where the GNSS signal is blocked.
Inside a building, where the GNSS signal is blocked.
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