When the system judges that the vehicle position information is not accurate based on vehicle speed and gyro sensor data calculations, the system will adjust the vehicle position information using GPS signals.
RECEIVING SIGNALS FROM GPS SATELLITES
Sometimes, satellite reception is weak. The following are places where signals tend to be weak:
● Inside tunnels and parking lots in buildings
● Areas with numerous tall buildings
● Under multi-layered highways
● In a dense forest
● Near military bases and certain government facilities
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