Air Traffic Management Concept Baseline Definition - The Boeing ...

A.3 Surveillance Inventory
The surveillance system elements which are in place or proposed for the 2000-2015 time
period are summarized in Table A-6. There are a total of 12 rows which describe the
major systems comprising air-ground, air-air, and oceanic surveillance. The columns in
the table name the various surveillance elements and give a number of details on
performance characteristics and system availability. The table includes all the systems that
are currently deployed or proposed for regional deployment in future architecture plans,
and those which could be available in the time frame of interest to implement future
CNS/ATM systems.
Rows 1 and 2 in Table A-6 summarize the characteristics of current and emerging radar
technologies for air-ground surveillance. The specific systems in these rows, e.g. ASR-9,
are NAS deployed radars. The newest proposed radars shown are the ASR-11 primary
radar, the European Mode-S radar (POEMS) which features Downlink of Aircraft
Parameters (DAP) at each scan cycle, and the ATCBI-6 which is a monopulse SSR with
selective interrogation capability (Partial Mode-S capability).
Rows 3, 4, 5, and 6 are surveillance elements that describe various concepts for
processing and distributing surveillance data. The current generation systems embed the
Radar Data Processor (RDP) as a major element of current generation ATC automation.
The Surveillance Distribution Network (SDN) is a concept for networking terminal and en
route radars to ATC centers and other sensors such as ADS and ADS-B systems. In the
core areas in Europe this concept has been implemented using common surveillance
distribution protocols and appropriate ground based communication networks. The SDN
needs to be paired with appropriate Surveillance Data Processor (SDP) software which is
intended to blend multi-sensor inputs into common aircraft track files, i.e. the RDP in
current systems will probably be replaced in the NAS system with SDN and SDP systems.
Finally, the Surveillance Server System (SSS) is an advanced version of SDN and SDP
which distributes multi-sensor processed track files to any ATC, military, or other users of
track file data. This system will allow smaller airports and aircraft dispatch operations to
have access to the most current and accurate aircraft state information.
Row 7 describes the current TCAS system for collision avoidance. Although there is
research and standards development continuing beyond the capabilities shown here, there
are no specific regional plans or commitments to develop TCAS beyond version 7 at this
time, although this is feasible in the time frame of interest. A likely successor to TCAS II
would be a system using Mode-S extended squitters and Mode-S interrogation
capabilities.
Row 8 in Table A-6 describes Contract ADS. This type of sensor is primarily oriented for
oceanic and remote area - non-radar airspace. Many undeveloped areas are considering
the use of ADS surveillance as a lower cost alternative to traditional radar surveillance.
Rows 9 and 10 in Table A-6 describe ADS-Broadcast sensors for airborne surveillance
and ADS-B listening stations for air-ground reception and distribution of ADS-B data to
ground facilities. The two primary systems proposed for ADS-B implementation in this
time frame are the Mode-S extended squitter and the STDMA system which is being
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