1. Traffic Alert and Collision Avoidance System -TACS II

2. Introduction.
Components.
Surveillance.
Protected Airspace.
Collision Avoidance Logic.
Cockpit Presentation.

3. Introduction: Mid-air collisions. Radar beacon transponders. TCAS I
TCAS III

4. Components:

5. Components: Antennas above and below the aircraft.
Interrogation at 1030 MHz and replies at 1090 Mhz.
RA Display.

6. Surveillance: Squitter:
By definition, the word “squitter” refers to a periodic burst or broadcast of aircraft-tracking data that is transmitted periodically by a Mode S transponder without interrogation from controller’s radar. 
Mode A/C transponders.
Interrogation/Reply.
Synchronous Grable.

7. Surveillance:

8. Surveillance:

9. Surveillance:

10. Surveillance:
Whisper – Shout interrogation.

11. Protected Airspace:
TAU.
Time-to-go approach.
Modes of Operation.

12. Protected Airspace:

13. Collision Avoidance Logic:
Sensitivity Level.
Range Test.
2 Step process for RA.

14. Collision Avoidance Logic:

15. Collision Avoidance Logic:

16. Cockpit Presentation:

17. Cockpit Presentation:

18. Cockpit Presentation: