Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 2441

c) r ≤ 3 NM or (r – 3 NM) / | r | ≤ 60 s; where: a = intruder altitude separation in ft a = altitude rate estimate in ft/s r = intruder slant range in NM r = range rate estimate in NM/s the aircraft shall be declared an active track and shall be updated on active range measurements once per second for as long as the above condition is met. Chapter 4 Annex 10 — Aeronautical Telecommunications 4-47 22/11/07 4.5.2 ACAS operation with an improved receiver MTL Note.— Applications of extended squitter that are independent of ACAS might be implemented (for convenience) using the ACAS receiver. The use of an improved receiver minimum triggering level (MTL) will make it possible to receive extended squitters from ranges of up to 60 NM and beyond in support of such applications. 4.5.2.1 An ACAS operating with a receiver having a MTL more sensitive than –74 dBm shall implement the capabilities specified in the following paragraphs. 4.5.2.2 Dual minimum triggering levels. The ACAS receiver shall be capable of setting an indication for each squitter reception as to whether the reply would have been detected by an ACAS operating with a conventional MTL (–74 dBm). Squitter receptions received at the conventional MTL shall be passed to the ACAS surveillance function for further processing. Squitter receptions that do not meet this condition shall not be passed to the ACAS surveillance function. Note 1.— Extended squitters containing position report information will be disseminated for display in connection with an extended squitter application. Note 2.— Use of the conventional MTL for the ACAS surveillance function preserves the current operation of ACAS surveillance when operating with a receiver with an improved MTL. 4.5.2.3 Dual or re-triggerable reply processor. The ACAS Mode S reply processing function shall:

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