PT  - JOURNAL ARTICLE
AU  - Kandera, Branislav
TI  - 
DP  - 2011 Mar 30
TA  - Doprava a spoje
PG  - 44--50
VI  - 7
IP  - 1
IS  - 13367676
AB  - Onboard Collision Avoidance System ACAS (Airborne Collision Avoidance System) aircraft is a system that uses signals SSR which operates independently of terrestrial radionavigations and surveillance systems, providing information on pilots operating in the vicinity of the aircraft while it is necessary that other aircraft were also equipped with an SSR transponder.