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Preface................................................................................................................................. 2<br />
The <strong>TCAS</strong> Solution............................................................................................................. 5<br />
Early Collision Avoidance Systems................................................................................ 5<br />
<strong>TCAS</strong> <strong>II</strong> Development .................................................................................................... 6<br />
Initial In-Service Evaluations ......................................................................................... 7<br />
Version 6.0 / 6.04a Implementation................................................................................ 8<br />
Version 7.0 Implementation............................................................................................ 8<br />
Version 7.1 Implementation............................................................................................ 9<br />
Requirements for World-Wide Carriage......................................................................... 9<br />
RVSM Considerations .................................................................................................. 10<br />
Standards and Guidance Material ................................................................................. 10<br />
<strong>TCAS</strong> <strong>II</strong> Components ....................................................................................................... 11<br />
<strong>TCAS</strong> Computer Unit ................................................................................................... 11<br />
Mode S Transponder..................................................................................................... 11<br />
Mode S/<strong>TCAS</strong> Control Panel........................................................................................ 11<br />
Antennas ....................................................................................................................... 12<br />
Cockpit Presentation ..................................................................................................... 12<br />
Traffic Display.............................................................................................................. 12<br />
Traffic Display Symbology........................................................................................... 13<br />
Resolution Advisory (RA) Display............................................................................... 14<br />
Target Surveillance ........................................................................................................... 17<br />
Mode S Surveillance..................................................................................................... 17<br />
Mode C Surveillance..................................................................................................... 17<br />
Interference Limiting .................................................................................................... 20<br />
Electromagnetic Compatibility ..................................................................................... 20<br />
Hybrid Surveillance ...................................................................................................... 20<br />
Collision Avoidance Concepts.......................................................................................... 22<br />
Sensitivity Level ........................................................................................................... 22<br />
Tau ................................................................................................................................ 23<br />
Protected Volume.......................................................................................................... 26<br />
CAS Logic Functions........................................................................................................ 26<br />
Tracking ........................................................................................................................ 26<br />
Traffic Advisory............................................................................................................ 28<br />
Threat Detection............................................................................................................ 28<br />
Resolution Advisory Selection ..................................................................................... 29<br />
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