cns/atm in south america
DESCRIPTION
CNS/ATM in South America. Authors: Alessandro Anzaloni Fernando Walter Andréa Ferreira Diego Méndez Castillo. Outline:. The South American Environment VDL 2 and GPS in South America Deployment Timescale. The South American Environment. Main Traffic Flows. - PowerPoint PPT PresentationTRANSCRIPT
ATN 2001
CNS/ATM in South AmericaCNS/ATM in South America
Authors: Alessandro AnzaloniFernando WalterAndréa FerreiraDiego Méndez Castillo
The South American Environment
VDL 2 and GPS in South America
Deployment Timescale
Outline:
Main Traffic FlowsThe South American EnvironmentThe South American Environment
The Present ATS – Air Traffic Service
Tributary ACC/FIC dependency Principal Center(XX) Maximum number of communication
Main Characteristics:
•Satellite communication•Analog voice communication
Disadvantages:
• Difficult expansion• Little frequency spectrum for data
A new digital communication network is needed to support the technical requirements of future CNS/ATM system
“CAR/SAM Regional Planning and Implementation Group”
Created to achieve interregional harmonization in the implementation of CNS/ATM in the CAR/SAM region
GREPECASGREPECAS
0.69 of recommendations completed
Recommendation Proposed Action(CAR/SAM/3)
Updating of the AIS Part of the ICAO Training Manual
To be amended and/or restated (WP/43 refers)
Preparing of Aeronautical Information Publications (AIP)
To be amended and/or restated (WP/49 refers)
Updating of AIP To be amended and/or restated (WP/49 refers)
Changes in permanent aeronautical information
To be amended and/or restated (WP/49 refers)
Measures for the development of arrangements related to the establishment and use of regional AIS data banks in the CAR/SAM region
To be amended and/or restated (WP/48 refers)
AIS data banks for the CAR/SAM region To be amended and/or restated (WP/48 refers)
Status of ImplementationStatus of Implementation (CAR/SAM/3-WP/7)
Recommendation Proposed Action(CAR/SAM/3)
Accuracy of aeronautical information data Action considered completed
Inclusion of guidance on data to be provided in ANPP relevant to Flight Management Systems
Action considered completed
Regular and alternates aerodrome Action considered completed
Scheduling aerodrome maintenance Action considered completed
Establishment of ATS route network Action considered completed
Great circle routes Action considered completed
Criteria with establishing optimum ATS routes for aircraft with area navigation capability
Action considered completed
Investigation of ATS incidents Action considered completed
An example: specific implementation problems in the CAR/SAM Regional Air Navigation Plan, Part MET
Require-ments
State/
Facilities
Des-cription
Remarks Corrective measure
Date of completion
Priority of action
CAR/ SAM ANP, Part IV, Meteorology,para.3.1
Dominican Republic, Ecuador,
Grenada, Guyana, Haiti,
Honduras, Netherland Antilles, Trinidad &Tobago and Venezuela
Do not transmit regularly the AIREPs in accor-dance with require-ments
Keep a strict supervision and control of the operacional ATS/MET staff
Disseminate air notifications to required locations in accordance with the Table MET 2 requirements
To be determined
Urgent
Interregional Coordination and HarmonizationInterregional Coordination and Harmonization
Regular Exchanges Non-regular Exchanges( 5 flights per week): ( 5 flights per week)T = Aerodrome Forecasts t = Aerodrome ForecastsF = Meteorological Reports and Aerodrome Forecasts
Table Met 2
ACARSACARS
Most of SAM regions are involved in the implementation of ACARS
•Frequency range: VHF (118.0 – 136.975 MHz)•Modulation: AM-MSK•Throughput: 2.4 kbps•MAC: CSMA no-persistent•Data link protocol: Stop-and-Wait•Air-ground communication•Caracter-oriented Protocol
BelémSantarémBoa Vista
Tabatinga
Manaus
Rio Branco
Porto Velho
Jacareacanga
Alta FlorestaCuiabá
Campo Grande
Foz do Iguaçu
Curitiba
Porto Alegre
Fortaleza
Recife
Fernando deNoronha
PetrolinaBarreiras
SalvadorB.Jesus da Lapa
Porto Seguro
Conc. do AraguaiaBelo Horizonte
Rio de janeiro
Rib. PretoCampinas
Guarulhos
Brasília
Implemented DEPV’s RGS
Implemented SITA’s RGS
Planned RGS
ACARS in BrazilACARS in Brazil
VDL Mode 2VDL Mode 2
•D8PSK•Throughput: 31.5 kbps•MAC: CSMA p-persistent•Go-back-N•Air-ground communication•Bit-oriented protocol
Simulation Results at ITASimulation Results at ITA
ADS-Maximum responseTtime: 0.5 sVDL packet size: 8312 bitsPacket delay: 0.264 s (considering 31.5 kbps)To achieve requirement, the maximum delay =0.236 s (SNR, Number of stations)For SNR = 30dB, Maximum number of stations = 59
For applications with response time required (ADS and DLIC), theremust be a relationship between packet size, SNR and number of stations
GPSGPS
•CNS/ATM Environment in SAM•ADS Experiment•Pseudo-range Models•Doppler Shift Monitoring•GPS Service Integrity Control•Airport Lab•Others
““TEST BED” in SAM /CAR RegionTEST BED” in SAM /CAR Region
Master Station
Reference Station
VHF-DL Station
UP-LINK Station
MASTER STATION USA
RIO DE JANEIRO
BUENOS AIRES
BALMACEDA
SANTIAGO
ANTOFAGASTA
LAPAZ
LIMA
RECIFE
MANAUS
CURITIBA
BOGOTA
BRASILIA
MASTER STATION USA
HONDURAS
Satellite dish
The BRAZILIAN ADS and DGPS Trailssystem configuration
GPS receiver ADS TERMINAL
AIRCRAFT
INMARSAT Satellite
GROUNDEARTH
STATION
ADS GROUNDTERMINATION
GPS ANTENNA
LOW GAINANTENNA
ADS Experiment in Brazil (1993)ADS Experiment in Brazil (1993)
ADS Experiment in BrazilADS Experiment in Brazil
Pseudorange ModellingPseudorange Modelling
SV calculated (Xs,Ys,Zs) SV real (Xr,Yr,Zr)
Reference (ITA)(Xu, Yu, Zu)
Ionosphere
Post - processingReal Time
Troposphere
Pseudorange ModellingPseudorange Modelling
Doppler Shift MonitoringDoppler Shift Monitoring
GPS Service GPS Service IIntegrity:ntegrity: Monitoring Monitoring
Reference Site(Xr, Yr, Zr)
GPS Service GPS Service IIntegrity:ntegrity: Monitoring Monitoring
Reference Site(Xr, Yr, Zr)
Pseudolite 1(X1, Y1, Z1)
Pseudolite 2(X2, Y2, Z2)
GDOP using “All in View”GDOP using “All in View”
GDOP using “All in View”GDOP using “All in View”
SAR 3-D Airport MapSAR 3-D Airport Map
Airport LaboratoryAirport Laboratory
By using the existent infrastructure and facilities at São José dos Campos (SP,Brazil), it is possible to train SAM region personnel in:
oLAASoPseudolites (Pseudo-satellites)oIntegrity Control and Regional Nav. CentersoGNSS oCNS-ATM
Deployment TimescaleDeployment Timescale
AcknowledgmentsAcknowledgments
This Project is partialy sponsered by the ICAO BRA-95/805 Objective 6 and by CTA/DEPV projects.
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