ICAO ACP WG-N meeting Use of IP in ARTAS

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ICAO ACP WG-N meeting Use of IP in ARTAS

• 3rd July 2006

European Organisation for the Safety of Air
Navigation
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ARTAS

• ARTAS (ATM Radar Tracker and Server) is conceived
  as a distributed system composed of a number of
  identical sub-systems, each with their own domain
  of Operation, co-operating together.
• Each sub-system, called an ARTAS Unit, will
  process all surveillance data reports - at
  present, these are classical radar reports and,
  in the future, Mode S and ADS reports as well -
  so as to form the best estimate of the current
  air traffic situation.

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ARTAS Current Environment
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ARTAS Future environment
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ARTAS Technical Environment
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ARTAS Deployment1/2
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ARTAS Deployment2/2
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ARTAS System presentation

SNMP, NTP
SNMP, NTP
Sensor input
Sensor input
Sensor input
Users
Users
Adjacent Unit
Adjacent Unit
Broadcast users
Broadcast users
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ARTAS System presentation (contd)
Internal LAN (Dual Eth. HUB or Dual
FDDI Conc.)
MMS node
MMS node
SRV node
SNMP, NTP

SNMP, NTP
SRV node
Sensor input
Sensor input
RBR node
RBR node
Users
Users
Adjacent Unit
Adjacent Unit
TRK node
TRK node
Broadcast users
REC node
Broadcast users
REC node
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ARTAS System presentation (cont)
SystemManager
Recording
(DISK)
On-line
Dynamic and Static Databases
Tracker
Server
Router Bridge
Plots - Local Tracks
System Tracks
AdjacentARTASUnits
Sensors
Users
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ARTAS System presentation (contd)

• The Router Bridge is the only OP CSCI
  interfacing with the external world.
• The RBR can use up to 6 LANs.
• Only the first 2 can be used for Sensor Input.
• Max 23 USER simultaneously ( 20 Ordinary Users
  and 3 Adjacent Units or 12 Adjacent Units and 11
  Ordinary Users)

Router Bridge
RADAR LAN A
RADAR LAN B
BROADCAST LAN
NTP LAN
SUPERVISION LAN
Point-to-Point USER LAN
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Protocols used in ARTAS

• TCP The RFC 793
• IP RFC 761
• Multicast Host Extensions for IP multi-casting
  RFC 1112
• UDP RFC 768
• PDC (Private Data Channel)
• NTP RFC 1305
• SNMP RFC1157

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SENSOR INPUT
ARTAS supports up two RADAR LANs.
Preferred LAN
Secondary LAN
FDDI (except with V7A1 Linux) and Ethernet LANs
are supported.
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SENSOR INPUT
Sensor information is a multicast
message. There are two possible protocol stacks
UDP/IP MAC/LLC1
Only one protocol stack has to be used.
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SENSOR INPUT
ASTERIX CAT used
001 Plots-Local tracks 002 Radar Service
Messages 034 Radar Service Messages 048
Plots-Local tracks 021 ADS-B message 023
CSN/ATM ground station service message 241
RMCDE PROTOCOL Mode-S stations ADS-B Ground
stations
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Normal USER connection
Normal Users are connected through a
POINT-TO-POINT connection
The Private Data Channel ( PDC) protocol is on
top of TCP layer.
ARTAS
ARTAS SYSTEM
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Normal USER connection
ARTAS
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Normal USER connection
ASTERIX CAT used
FDPS 032 MINIPLAN messages 062 Track
information 065 Service related messages 252
Service related messages
Other Normal users 062 Track information 065
Service related messages 063 Sensor
information 252 Service related messages 030
Track information 030 Sensor information
ARTAS
ARTAS SYSTEM
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Adjacent Unit connection
Adjacent units are connected through a
POINT-TO-POINT connection
The Private Data Channel ( PDC) protocol is on
top of TCP layer.
ARTAS UNIT B
ARTAS UNIT A
WAN
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Adjacent Unit connection
WAN
ASTERIX CAT used
032 MINIPLAN messages 062 Track information 065
Service related messages 252 Service related
messages
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Broadcast Service
ARTAS Tracks Multicast message Two protocol
stacks
UDP/IP
MAC/LLC1
ARTAS
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Broadcast Service
MAC/LLC1
UDP/IP
ARTAS
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Broadcast Service
ASTERIX CAT used
062 Track information 065 Service related
messages 063 Sensor information 252 Service
related messages 030 Track information 031
Sensor information
ARTAS
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IPAX COMPLIANCE

• IPAX Compliance A destination port uniquely
  identifies the application in the receiving
  system that should process the incoming IP
  packets.
• ARTAS Requirement There shall be a default port
  number (configurable by means of an MMS
  parameter) that is written initially to the
  fields Port 1 to Port 4. For backwards
  compatibility an operator can choose to change
  this default port number according to his needs
  (in the range of 1024, 65535).
• Implementation A sensor is not any longer
  identified by a PORT NUMBER and there is DEFAULT
  PORT NUMBER for ALL RADARS.
• The default port number would be the port number
  for ASTERIX in receiving systems.

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RADAR DEFINITION
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RADAR IDENTIFICATION

• SIC/SAC
• Alias of the SIC/SAC Route preferred and Route
  secondary
• Preferred LAN and Secondary LAN
• 4 Channels
• The input coming from the secondary LAN is
  always received by ARTAS.

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RADAR IDENTIFICATION Channels definition

• Channel 1 ( Preferred LAN, preferred route )
  MULTICAST IP 1 PORT 1
• Channel 2 ( Preferred LAN, secondary route )
  MULTICAST IP 2 PORT 2
• Channel 3 (Secondary LAN, preferred route )
  MULTICAST IP 3 PORT 3
• Channel 4 (Secondary LAN, secondary route)
  MULTICAST IP 4 PORT 4
• The list order defines the priority amongst the
  four channels.
• In ARTAS there is a mechanism that will always
  select the highest priority channel amongst those
  available.

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ARTAS non-Sensors Environment

• Unique IP PORT NUMBER for the output. At the
  moment the UDP ports must be in the range
  5001,65535

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IPv6

• ARTAS is only validate for IPV4.