What is the difference between ACARS and ADS-B?
For weather information in-flight or pre-flight which one is used?
One can easily get lost in the alphabet soup that is datalink.
Both ACARS and ADS-B provide datalink applications – which can be broken down in terms of CNS: Communication, Navigation, and Surveillance.
ACARS is used for:
ADS-B is used solely for Surveillance; broadcasting (OUT) own location – and can include ownship surveillance by receiving (IN) traffic information.