CNS/ATM in South America

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CNS/ATM in South America
Authors Alessandro Anzaloni Fernando
Walter Andréa Ferreira Diego Méndez Castillo
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Outline

• The South American Environment
• VDL 2 and GPS in South America
• Deployment Timescale

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The South American Environment
Main Traffic Flows
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The Present ATS Air Traffic Service
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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

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GREPECAS
CAR/SAM Regional Planning and Implementation
Group

• Created to achieve interregional
• harmonization in the implementation of
• CNS/ATM in the CAR/SAM region

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Status of Implementation (CAR/SAM/3-WP/7)
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)
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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
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Interregional Coordination and Harmonization
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
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Table Met 2
Regular Exchanges Non-regular Exchanges (? 5
flights per week) ( ? 5 flights per week) T
Aerodrome Forecasts t Aerodrome Forecasts F
Meteorological Reports and Aerodrome Forecasts
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ACARS
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

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ACARS in Brazil
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VDL Mode 2

• D8PSK
• Throughput 31.5 kbps
• MAC CSMA p-persistent
• Go-back-N
• Air-ground communication
• Bit-oriented protocol

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Simulation Results at ITA
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GPS

• CNS/ATM Environment in SAM
• ADS Experiment
• Pseudo-range Models
• Doppler Shift Monitoring
• GPS Service Integrity Control
• Airport Lab
• Others

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TEST BED in SAM /CAR Region
MASTER STATION USA
MASTER STATION USA
HONDURAS
BOGOTA
MANAUS
RECIFE
BRASILIA
LIMA
LAPAZ
ANTOFAGASTA
RIO DE JANEIRO
CURITIBA
Master Station
SANTIAGO
BUENOS AIRES
Reference Station
VHF-DL Station
BALMACEDA
UP-LINK Station
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ADS Experiment in Brazil (1993)
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ADS Experiment in Brazil
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Pseudorange Modelling
SV real (Xr,Yr,Zr)
SV calculated (Xs,Ys,Zs)
Ionosphere
Troposphere
Reference (ITA) (Xu, Yu, Zu)
Post - processing Real Time
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Pseudorange Modelling
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Doppler Shift Monitoring
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GPS Service Integrity Monitoring
Reference Site (Xr, Yr, Zr)
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GPS Service Integrity Monitoring
Pseudolite 2 (X2, Y2, Z2)
Reference Site (Xr, Yr, Zr)
Pseudolite 1 (X1, Y1, Z1)
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GDOP using All in View
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GDOP using All in View
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SAR 3-D Airport Map
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Airport Laboratory

• By using the existent infrastructure and
  facilities at São José dos Campos (SP,Brazil), it
  is possible to train SAM region personnel in
• LAAS
• Pseudolites (Pseudo-satellites)
• Integrity Control and Regional Nav. Centers
• GNSS
• CNS-ATM

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Deployment Timescale
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Acknowledgments

• This Project is partialy sponsered by the ICAO
  BRA-95/805 Objective 6 and by CTA/DEPV projects.

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END