Automatic Packet Reporting System is an amateur radio-based system for real time digital communications of information of immediate value in the local area. Data can include object Global Positioning
APRS beacon transmitter with GPS receiver.
Traffic alert and collision avoidance system, also called an airborne collision avoidance system, is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision betwee
Automatic Packet Reporting System
…Packet Radio Experiment—an experiment intended to test the tracking of satellites via amateur packet radio, flown on Space Shuttle mission STS-72. Traffic collision avoidance system (TCAS) Stan Horzepa (1999). APRS Tracks, Maps and Mobiles. American Radio Relay League . ISBN 978-0-87259-774-7…
Combined TCAS and EHSI cockpit display (color)
Combined TCAS and VSI cockpit display (monochrome)