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Workshop for the implementation of Navigation Infraestructure to
support PBN and GNSS precision approach in NAM/CAR/SAM
Region
Session 3: Current GNSS Situation and Evolution
Brazilian GBAS experience
Alessander de Andrade Santoro - Brazil
August 16th, 2016
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MOTIVAÇÃO
Continuosincrease of
demand
Necessity for synchronization
of CNS/ATM deployment in
the world
Increasedefficiency = increasedsafety andlower costs
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Objective
Present Brazilian
Ground Based Augmentation System (GBAS)
experience
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Brazilian FIR
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13 International Adjoint FIR
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AMAZON FIR
5.200.000 km2
USA: 30 States
32 European
countries
Area comparison
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Radar Covereage FL290
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Air traffic operations
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CNS EquipmentsEquipment Qty
Primary radar 69
Secondary radar 84
Weather radar 17
Ground radar 1
PAR 6
VOR 84
DME 112
NDB 187
ILS 88
PAPI/VASIS 83
ALS 21
VHF/UHF/HF 8458
Meteorological station 196
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Procedures
Type Qty
IAC NDB 157
IAC VOR 179
IAC ILS 121
IAC LOC 57
IAC RNAV 215
RNAV ROUTES 140
CONVENTIONAL ROUTES 77
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Standards (Annex 10 ICAO)
According to the phase of flight
Accuracy Availability Continuity
Integrity
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ADVANTAGES
• Well known technology
• Operational confidence
• Large network
DISADVANTAGES
• Analogic modulation – interference and
channel management
• Low range
• Low procedure flexibility
• Site constraints
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Performance Based Navigation
• Less distance
• Less fuel
•Less $$$
• Less CO2
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SBAS GBAS GBASSBAS
GBASSBAS
GBAS
Uplinked Data
Surface
Movement
Guided
Precision
Missed Approach
GBASAirportMovements
GBAS
Applications
Uplinked Data
Surface
Movement
Guided
Precision
Missed Approach
Gate to gate
Conceito GATE TO GATE
First come, first served On time, first served
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Global Positioning System
• Enroute
• Non precision Approach (reduction of MDA)
• Need of augmentation
• Accuracy
• Integrity
• Availability
• Continuity
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Honeywell SLS-2000
• 1998
• SCAT I operations in Joinvile (Rio Sul)
• São José dos Campos
• Flight Inspection Aircraft EMB-110
• Type of technology Operational in Norway till
present
www.flygls.net
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18
S
B
A
S
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MASTER STATION
REFERENCE STATION
VHF-DL
FAA Master Station
RIO DE JANEIRO
CURITIBA
BRASILIA
MANAUS
RECIFE
SBAS Test Plataform
SANTIAGO
TEGUCIGALPA
BALMACEDA
LIMA
ANTOFAGASTA
BOGOTA
El Alto
EZEIZA
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RLA/00/009 PROJECT – GNSS
AUGMENTATION TRIALS
• SBAS augmentation trials in the CAR/SAM
Regions
• MOU – ICAO/FAA: signed on 2 June 2001
• First flight trials - 2002 in Brazil
• It was proven that the ionosphere effect
over the GPS signal did not guarantee
NPA approaches with vertical precision
requirements
• Final report – RCC/5-RLA/00/009-WP/03
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SBAS in Equatorial Regions
• RLA/00/009 PROJECT – GNSS AUGMENTATION
TRIALS
• NAVIGATION SYSTEMS PANEL (NSP) - Ionospheric
Effects on GNSS Aviation Operations
• ICAO Doc 9849 - GNSS Manual
• IATA Report on User Requirements for Air Traffic
Services – “Do not support the continued investment,
development, and implementation of SBAS.”
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GB
AS
–G
rou
nd
Ba
se
d
Augm
en
tation S
yste
m
22
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Benefits
23
• One GBAS multiple
approaches - up to 48
approach procedures
• Flexible sitting
requirements
• Improved accuracy of
positioning service
• Reduced building
restrictions - construction of
new terminals and hangars
• Flexible use - curved
approach paths, different glide
path angles, off set
thresholds, etc
Example Curved Approach with
Continuous Descent
©
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Appendix 1
Appendix 1
Appendix 1
FAA / DECEA Cooperative History
MOC / NAT-I-0801Development of Civil Aviation
Jan 2000
Annex 1 (Oct,2001)
GNSS Flight Test
Trials and Demonstrations
Annex 2 (Oct,2001)
Ionosphere Research
Loan of equipment
Annex 3 (Ago,2003)
LTP
Loan of equipment
Annex 1 (Nov,2000)
Purchase of equipment
Annex 2 (Nov,2002)
CARSAMMA
Establishment
Annex 3 (Nov,2003)
GNSS Flight Trials
Purchase of equipment
Appendix 1
Annex 4 ETMS
MOA / NAT-I-0019Technical Assistance
Jun 2000
MOC NAT-I-4016Technical Assistance
Jul 2015
Annex 1 (In Coord)
Atmospheric Ionospheric
Research
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LAAS Test Prototype
25
• SGBL
• MoU DECEA/FAA 2003
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LAAS Test Prototype
26
• GEIV Aircrafts
• MMR – GNU 930 (Rockwell Collins) – Red label
• Achievements
• 120 approaches
• 03 airports (SBGL, SBRJ, SBAF)
• 06 runway thresholds
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LAAS Test Prototype
27
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LAAS Test Prototipe
28
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LAAS Test Prototipe
29
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LAAS Test Prototipe
30
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LAAS Test Prototype
31
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LAAS Test Prototype
32
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LAAS Test Prototipe
33
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LAAS Test Prototype
34
• Data collection errors
• Ionosphere
• Solar Cycle
• Reduce variables
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SLS4000 – SmartPath - SBGL
June, 2011 – Operation
for testing purposes;
Availability issues
(ionosphere);
Disabling monitors for
data collection purposes;
Approach procedures
RWY 10, 15, 28 and 33.
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SmartPath Components GPS Antennas•Four GPS RRA/RSMU per GBAS
•Multipath limiting design
•Sharp cut-off/rejection at horizon
GPS Receivers•48-channel, L1 C/A GPS
•Signal Quality Monitoring
VHF Radios•Nav band, 108-118 MHz
•D8PSK modulation, TDMA
•Digital data broadcast
VHF Antenna•Horizontal polarized (HPOL)
•Omni-directional
Corrections Processor•Pentium M, 1.8 GHz CPU
•Real time monitoring for GPS
failures, local error sources
•Differential corrections
Maintenance Data Terminal•Windows OS
•System mode & control
•Component status
•Approach control
•Windows OS
•System mode
•Current/Predicted
Availability
Air Traffic Status Unit
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RWY 10/28 SBGL
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GBAS AQUISITION
38
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GBAS AQUISITION
39
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Ionosphere
40
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41
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Ionosphere
42
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BRAZILIAN CONTINUOUS MONITORING
NETWORK (RBMC)
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44
IONO DATA
COLLECTION
STATIONS
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45
CONUS THREAT MODEL
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• Brehmen (Germany), Newark (USA), Houston (USA), Malaga
(Spain), Sydney (Australia)
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IONO Research
Network – 180 receiver L1/L2 and scintilation
127 dates march 2011 / march 2014 (S4, Kp
and Dst);
Lowest cycle in 100 years (cycle 24);
DECEA, ICEA, FAATC/NAVTAC, USTDA,
Mirus Tech, SDTP, Stanford University, INPE,
Boston College, UNESP, KAIST
Final Report – march 2015.
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IONO RESEARCH
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IONO RESEARCH
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CONCLUSIONS of RESEARCH
The highest gradient identified exceeds 850 mm/km which far exceeds the
events used to define the CONUS GBAS Threat Model.
Ionospheric events in the low latitudes are greater in frequency and
magnitude than those in the Northern Latitudes.
The current threat model implemented in SLS-4000 installation at GIG
does not comply with ICAO/FAA requirements for integrity or availability.
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Flight Inspection
EMB110 / H-800XP / LEGACY 5000
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Flight Inspection
• MANINV-BRASIL (2014)
•GNLU-930 / GLU-925
•UNIFIS3000
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Remarks about GBAS CAT I (GAST C)
Only Honeywell SLS-4000 certified for CAT I (Mid Latitudes) DA within 6km (integrity)
VDB coverage
Block II – Iono improve (only for CONUS)
Expensive receiver for general aviation
Cost ILS x GBAS (CBA)
Concurrent technologies
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Concurrent technologies to GAST C
GAST D (CAT II/III) – new receivers (SLS-5000)
GBAS MF (L5) / MC (GLONASS, BEIDOU, GALILEO)
SBAS LPV200 (WAAS, EGNOS) – Mid latitudes
SBAS MF
BARO VNAV
RNP-AR
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SBRJ
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Concurrent technologies to GAST C
APP RNP AR RWY02R
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Concurrent technologies to GAST C
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Concurrent technologies to GAST C
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SIRIUS Program
March, 2012 (PCA 351-3 );
Aligned with the GANP and ASBU;
Subprograms and projects CNS, ATM, MET, AIS, SAR
- PFF 12 – Navigation Systems Upgrade (GBAS
evaluation);
- PFF 04 – Approach RNP Implementation (GBAS
CAT I procedures).
Information available in http://www.decea.gov.br/novo_sirius/
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CONCLUSION
GBAS GAST C is operational in a few contries in mid latitudes but is still a
chalenge to low latitudes
Since 2003 Brazil tests GBAS stations in SBGL and technology did not
meet ICAO SARPs for availabilty and integrity
Brazil continues in the effort to set SLS-4000 at SBGL operational for
public use
New Technologies are coming to chalenge GBAS GAST C