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17th July 2009 | 13:32

#3711 (permalink)

Graybeard

Joined: Nov 2006

Posts: 896

Likes: 2

From: SoCalif

TCAS has no speed input at all. Honeywell uses the attitude input to select which TCAS antenna to use for target tracking. Collins uses relative signal strength instead. TCAS is interested in rate of closure.

GB