Transcript ATN2002 IEE, London

ATN2002
IEE, London
Providing
Communications Services
to Support ATC
Applications
Akhil Sharma
Senior Manager
AIRCOM Service Development
Outline
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Overview of VHF and Satellite AIRCOM
Current ATS Data link Communications
Services
SITA ATS Application Systems
VDL Mode 2
Transition to ATN
ATN Service
ATN 2002
AIRCOM Service
SITA
X.25 MTN
SITAMET
ADLT
(Singapore)
MSS
GES
Primary
MSW
DHP
Backup
RGS
ADLT
(Montréal)
ATN 2002
AIRCOM
Internetworking
and
FANS Partners
Airlines and
CAA Customers
VHF AIRCOM Coverage
ATN 2002
Satellite AIRCOM Coverage
ATN 2002
AOC Use of ACARS
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SITA introduced the VHF ACARS services (VHF AIRCOM) in the
early 1980’s to support movement messages
Today, over 100 or the world’s airlines are VHF AIRCOM
customers with 4,000 aircraft and and additional 1,000 BizJets
The 5000+ aircraft which use the service collectively generate
400,000+ messages per day
In addition to basic movement information, AOC applications
have evolved to include:
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engine monitoring
flight planning
Weight & Balance, Takeoff Data Calculation
Weather Information
Fuel information
Gate information
ACARS is considered to be a mission critical service
ATN 2002
ATS Use of ACARS – Pre FANS
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A number of ATS providers around the world have/are planning
initial ATS data link services:
– Departure Clearance (DCL)/Pre-Departure Clearance
Services (PDC)
– Oceanic Clearance Services (OCM)
– Digital-ATIS (D-ATIS) Services
In order to promote global interoperability, the AEEC and
Eurocae have developed standards for these services
– AEEC 623 (Message formats)
– Eurocae ED 85, ED 89 and ED 106 (Performance
Requirements)
SITA provides a D-ATIS Gateway service in order to allow non
623 compliant aircraft access to 623 compliant ground systems
and vice versa
ATN 2002
ATS Use of ACARS – Pre FANS
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SITA provides DCL, OCM, D-ATIS communications services (ATS
AIRCOM) to an increasing number of ATS providers
D-ATIS direct connections to:
– Australia, Austria, Bahrain, Denmark, France, Germany, Ivory Coast,
Korea, Singapore, Spain, Switzerland, United Kingdom
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DCL/PDC direct connections to:
– Australia, Belgium, Denmark, France, Ivory Coast, Korea, Spain
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SITA supports pre-FANS internetworking with other DSPs to ensure
maximum access to ATS applications by aircraft operators
ATS AIRCOM provides customers with comprehensive support
including help-desk and monthly performance data that reports
against key indicators, e.g.
– Service availability
– Uplink success rate
– Uplink transit delay
ATN 2002
Pre-FANS ATS Performance
2001
Average
Uplink Success Rate
YTD 2002
Average
96.56% 97.10%
9.54%
Message Uplink Delivery Time (based on MAS msgs)
Within 60 seconds
93.85% 94.67%
Within 120 seconds
99.21% 99.40%
ATN 2002
ATS Use of ACARS - FANS
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According to industry estimates, there are approx. 1,200 FANS
1/A equipped aircraft today……...and the number is growing !
To date, FANS 1/A services have been introduced in remote and
oceanic airspace
An Industry group, under the Link2000+ programme, studied
FANS accommodation in an ATN environment
SITA currently provides direct FANS 1/A communications
services to 20 ATS providers including the FAA, Eurocontrol,
France, Spain, South Africa, Singapore, Australia and India
SITA works with ATS providers directly and through ICAO
Regional Planning Groups and FANS Interoperability Teams to
ensure the datalink service continues to meet their requirements
SITA supports FANS internetworking with other DSPs to ensure
maximum availability of services to aircraft operators
ATN 2002
SITA FANS customers
 Boeing Test
System (Seattle)
   US FAA
(Oakland,
Anchorage,
New York)
 DGAC French
Polynesia (Papeete)
ATN 2002
  Eurocontrol Maastricht
 Korea Airports
 Aerospatiale Toulouse
Authority (Gimpo)
 CAA Uzbekistan
 CAO Iran (Tehran)
(Tashkent)
 Taiwan CAA
 Egypt CAA (Cairo)   AAI India  CAD Hong Kong
(Calcutta, Madras)
 AASL Sri Lanka
 DCA Myanmar
(Columbo) (Yangon)
 CAA Singapore
 DCA Mauritius
 Airports Fiji
 ASECNA Madagscar (Antananarivo)
  Airservices Australia
 ATNS South Africa
(Brisbane, Melbourne)
(Johannesburg)
AIRCOM use for FANS-1/A
Satellite Data Unit
FANS-1/A ADS/CPDLC
ACARS Convergence Function
ACARS Management Unit
Co-DSP
Satellite
AIRCOM
VHF AIRCOM Ground Station
SITA Network
FANS-1/A Ground System
ADS/CPDLC
ACARS Convergence Function
ATN 2002
VHF Transceiver
SITA ACARS Processor uses the address
entered by the airborne system to route
messages to the destination FANS-1/A
ground system.
FANS ATS Performance
2001
Average
Uplink Success Rate
YTD 2002
Average
99.22% 99.54%
Message Uplink Delivery Time (based on MAS msgs)
Within 60 seconds
96.24% 96.17%
Within 120 seconds
99.03% 98.90%
ATN 2002
ATS AIRCOM Solutions
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SITA has recently launched a new series of ATS
systems to accelerate ATS data link
implementation:
– Airport Tower Systems
• Departure Clearance/Pre-Departure Clearance –
“AIRCOMclever”
• Digital-ATIS – “AIRCOMevatis”
– Including hosted services
– ADS-CPDLC Gateway
– ACARS Gateway
ATN 2002
AIRCOMevatis
ATN 2002
AIRCOMclever
ATN 2002
AIRCOMclever
Controller HMI
ATN 2002
ADS-CPDLC Gateway
ATN
aircraft
VGS
SITA ATN
router
ATS
Operational
System
ATN
SubNetwork
GES
ATN ES
ADLT
ADS-CPDLC
Gateway
FANS path
FANS
aircraft
ATN 2002
RGS
SITA Network Service
ATN path
VDL Mode 2
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ATN 2002
One VDL channel
provides at least 10
times more capacity
increase over one
ACARS channel
Way forward to address
performance related
issues in high density
airspace approaching
saturation
VDL Mode 2
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SITA actively supported ICAO VDL Mode 2 standardisation/
validation and associated activities in AEEC, RTCA and Eurocae
Contracted Harris Corporation for the development of the “VGS” in
1999
First VGS was delivered to SITA in December 2000
VGS capable of supporting ACARS, AOA, ATN/VDL M2 and VDL
Broadcast in parallel
VDL AIRCOM service was launched in July 2001
– 10 sites operational in Europe today
– Another 5 sites deployed for avionics vendors
ATN 2002
VDL Mode 2/AOA
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Industry has defined an interim step towards ATN referred to as
“AOA”, “ACARS over AVLC”
AOA allows existing ACARS applications to benefit from the
higher bandwidth offered by VDL M2
Main benefit, in addition to capacity increase, is that no change
required to the interface to customer ground systems
For aircraft, transition from AOA to ATN/VDL Mode 2 will require
a software upgrade to the avionics
AIRBUS AOA flight tests completed in October 2001
AOA Flight tests with KLM to start end September 2002
An increasing number of airlines are planning to migrate to AOA
for AOC purposes
ATN 2002
VDL/AOA/ATN
VDL/ATN Architecture
ACARS Over AVLC (AOA)
AOC/ATC bit-oriented
Applications
ACARS Applications
ACARS 618
(Satellite Data-2)
ACARS Router
ATN
ACARS 618
(AOA)
8208
L
M
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AVLC
MAC
Physical
ATN 2002
ACARS 618
(VHF Plain Old ACARS)
SITA VGS Architecture
Wide band
Antenna
interface (8) - X1
Antenna Relay switches
Narrow band
Antenna
GPS
source
interface (8) - X2
interface (1) - X10
VHF Data Radios: Each VDR
can be programmed to handle
VHF analog ACARS or VHF
Digital Link Mode 2
Uninterruptible Power Supply
Power Supply
Dual Power Supply
VHF Ground Computer (VGC)
Laptop computer
for maintenance
SITA Ground Network
VGS Management
Interface
ATN 2002
VDL Subnetwork
Connections ATN Router
ACARS and VDL AOA Traffic
VDL Management
Entity Processor
ACARS Processor
ATN Services
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SITA actively contributed to ICAO ATN standardisation/ validation
and development of RTCA, Eurocae, AEEC standards
Provision of ATN service over VDL Mode 2 and/or SATCOM requires
deployment of ATN Router(s)
Numbers and locations of Routers will be determined by ATS
provider requirements
SITA is currently in the process of evaluating ATN Router products
SITA is supporting CPDLC/ATN/VDL M2 flight trials with Eurocontrol
ATN Service will be launched to meet Eurocontrol Maastricht “Petal
to Link2000+” project timescales
Currently working with the FAA to work out participation in the
CPDLC Build Programme
SITA works with ATS Providers and Regional ICAO Groups to
support ATN/VDL M2 trials
The Satellite AIRCOM service is compliant with the ATN and was
demonstrated in the frame of the ADS Europe Programme
ATN 2002
Communications Flows
ATN
AOA
VDL2 Link
ACARS
AVLC Link
RGS
VGS
ATN User Traffic
Data Communication Network
ATN Router
ATN System
ATN 2002
ACARS DSP
ACARS User Traffic
Airline ACARS
Host
Conclusions
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The use of the current VHF and Satellite AIRCOM service to support
ATS communications continues to increase – a true reflection of the
benefits provided
SITA encourages and is willing to work with ATS providers to deploy
PDC/D-ATIS systems to realise early benefits and gain experience
SITA’s global VHF network is in the process of being upgraded to
provide VDL M2 Services
Major airlines are planning to upgrade to AOA to provide enhanced
performance to their existing ACARS applications
SITA’s ATN Service will be shortly launched to meet ATS provider
requirements
SITA encourages ATS providers planning on ATN implementation to
address the accommodation of FANS 1/A aircraft
Finally, SITA is committed to enabling cost-effective improvements in
global Air Traffic Management and continually works with ATS
providers and the airline community to realise this goal
ATN 2002