SmartPath™ Technical Overview

航空

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航空

SmartPath™
Dave Jensen, John Howard
Honeywell, Precision Landing Systems
29-30 Oct 2009
CAAC New Technology Seminar - GNSS
SmartPath™ Technical Overview
􀃆 Honeywell.com
SmartPathTM Technical Overview
• SmartPath CAT-I GBAS
– FAA Certified
– Capabilities
– Architecture, Components
– GPS Integrity Monitors
– Siting & Installation
•SmartPath Development Continues
– Curved Approach Paths
– Missed Approaches
– Guided Departures
– Positioning Service
– CAT-II, CAT-III Final Approaches
Dave Jensen/John Howard
2
CAAC New Technology Seminar – GBAS 29-30 October 2009
World’s First FAA-Certified GBAS
􀃆 Honeywell.com
SmartPathTM CAT-I GBAS
• Category-I Ground Based Augmentation System (GBAS)
–Compliant with FAA-E-AJW44-2937A (Category-I LGF)
– FAA System Design Approval (SDA) granted September 3, 2009
• Cross-Over to Digital Technology
– GBAS replaces Category-I Instrument Landing System (ILS)
• ILS uses analog radio beam to guide approach
– Aircraft now receives omni-directional digital data broadcast
• GBAS uses ‘virtual’ path to guide approach
• Critical Subsystem Redundant Architecture
– 4 Reference Receivers (minimum 3)
– 2 Corrections Processor Subsystems
– 2 VHF Data Broadcast (VDB) Subsystems
– 2 Communication Busses (Ethernet)
– 3 Power Sources (2 Primary AC + 10h Battery Backup)
Dave Jensen/John Howard
3
CAAC New Technology Seminar – GBAS 29-30 October 2009
World’s First FAA-Certified GBAS
􀃆 Honeywell.com
SmartPathTM Capabilities
• Category-I Precision Approach (200 ft DH)
– 99% availability in most locations
• Approach Paths: Uplinks Final Approach Segments (FAS)
– Supports all runways at an airport with single system
– Provides multiple glide slopes/approaches per runway
– Up to 26 final approaches
– Flexible siting anywhere within 6 km of all Decision Heights
• Integrity: Monitors GPS Satellites, Signal-in-Space, Ground
– Aircraft raw GPS unable to ensure GPS satellite integrity
– Monitoring of satellite, space and ground error sources
– 1.5 x 10-7 approach integrity (to 23 NM)
• Accuracy: Corrects up to 13 pseudoranges
– L1 used for all pseudorange measurements
– 50 cm accuracy (95%)
• Connectivity: Ethernet Interface
– Read-only monitoring via Ethernet interface
– Up to 6 remote GBAS monitors
Dave Jensen/John Howard
4
CAAC New Technology Seminar – GBAS 29-30 October 2009
Provides Approaches, Integrity, Accuracy
􀃆 Honeywell.com
SmartPathTM Components
GPS Antennas Corrections Processor
•Four GPS RRA/RSMU per GBAS
•Multipath limiting design
•Sharp cut-off/rejection at horizon
•entium M, 1.8 GHz CPU
•Real time monitoring for GPS
failures, local error sources
•Differential corrections
VHF Antenna
•Horizontal polarized (HPOL)
•Omni-directional
GPS Receivers
•48-channel, L1 C/A GPS
•Signal Quality Monitoring
VHF Radios
•Nav band, 108-118 MHz
Omni g Q y g
•D8PSK modulation, TDMA
•Digital data broadcast
Maintenance Data Terminal Ai T ffi St t U it
•Windows OS
•System mode & control
•Component status
•Approach •Windows OS
•System mode
•Current/Predicted
Air Traffic Status Unit
Dave Jensen/John Howard
5
CAAC New Technology Seminar – GBAS 29-30 October 2009
control
Availability
􀃆 Honeywell.com
SmartPathTM Architecture
Dave Jensen/John Howard
6
CAAC New Technology Seminar – GBAS 29-30 October 2009
Redundant Critical Subsystems
􀃆 Honeywell.com
SmartPathTM Integrity Monitors
• Satellite Errors
– Satellite Position
– Signal Deformation
– Code/Carrier Divergence (CCD)
– Excessive Acceleration
– Low Signal Power
•Space & Atmosphere Errors
– Ionosphere
– Troposphere
• Ground & Receiver Errors
– Multipath
– Radio Frequency Interference
– Cross-Correlation
– Cycle Slip
Dave Jensen/John Howard
7
CAAC New Technology Seminar – GBAS 29-30 October 2009
􀃆 Honeywell.com
SmartPathTM Siting
• Select Possible Locations
–Map & Paper study determines candidate locations
– On-Site assessment evaluates candidate locations
• Assess Airport Siting Constraints
– Airport Operational Requirements
– Safety and Obstruction Zones
– Keep-out Areas, e.g. VOR, ILS
– Future Airport Development Plans
• Apply GBAS General Siting Requirements
– Power, Communications, Access, Security
• Meet GBAS Subsystem Siting Requirements
– Reference Receivers, Shelter, VDB Antenna
– Minimum & Maximum Separation
– Ensure Signal Coverage Volume
Dave Jensen/John Howard
8
CAAC New Technology Seminar – GBAS 29-30 October 2009
Flexible Siting
􀃆 Honeywell.com
SmartPathTM Installation
• Construct Infrastructure
– 4 Reference receiver footings and masts (up to 6 ft)
– Shelter (existing or build)
– VHF Antenna footing and mast (up to 35 ft)
– Trench and bury cabling
• Install GBAS Equipment
– Interconnect system components
• Baseline System Performance
– Identify system error bounds
– Identify unacceptable multipath regions 􀃆 mask
• Conduct 14-day Stability Test
• Complete Facility Approval
• Complete Operational Approval
Dave Jensen/John Howard
9
CAAC New Technology Seminar – GBAS 29-30 October 2009
Quick Installation
􀃆 Honeywell.com
Future Development
• Terminal Area Paths (TAP)
– Provide curved paths into final approach
– Provide missed approach path
– Provide guided departures
– Provide transition from RNP to GLS final
• Quantas has developed world’s first RNP to GLS final at Sydney
• Differential Correction Positioning Service (DCPS)
– RNP-0.1 achievable using positioning service
• Availability Enhancements
– Monitor optimization to reduce 0.50 cm accuracy
– Reduce system start-up time
• Category-II Precision Approaches
– >100 ft Decision Height (including CAT-I)
– Expect no HW upgrade for CAT-III
• Category-III Precision Approaches
– <100 ft Decision Height (including CAT-I)
– ICAO, RTCA requirements being approved, validated
Dave Jensen/John Howard
10
CAAC New Technology Seminar – GBAS 29-30 October 2009
Clear path to CAT-II and CAT-III
􀃆 Honeywell.com
Recap
• SmartPath is World’s First FAA-Certified CAT-I GBAS
• SmartPath Provides
– 26 GLS Approaches
– 14 GPS Integrity Monitors
– 13 GPS Corrections
– Integrity to 23 NM
– Critical redundant architecture
• SmartPath Leading the Way to
– Improved accuracy (<0.50 m)
– Curved paths into GLS final
– Missed approaches, guided departures
– Positioning service to support RNP-0.1
– CAT-II, CAT-III precision approaches
• Questions?
Dave Jensen/John Howard
11
CAAC New Technology Seminar – GBAS 29-30 October 2009