An apparatus and method for combining the functionality of multiple airborne traffic surveillance systems that operate in the L-band frequency range. The apparatus and method combine the functionality of both a Traffic Alert Collision Avoidance System (TCAS) and a Mode-Select (Mode-S) transponder in...http://www.google.com.tw/patents/US7006032?utm_source=gb-gplus-share專利 US7006032 - Integrated traffic surveillance apparatus
