曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
A类障碍物限制测量（OLS）
设备安装方案
坐标测量，方案设计与评估
设备安装测试
土建，设备运输，物理安装，安装性能测试
培训
飞行程序设计
中国民航局空中交通管理局
4、计划进度
第三阶段——试验与验证
GBAS地面测试
静态测试，动态测试
GBAS飞行测试
SIS测试，功能测试，性能测试
GBAS飞行程序测试
中国民航局空中交通管理局
4、计划进度
第四阶段——分析与评估
GBAS性能分析评估
Honeywell SLS-4000系统的中国民航局
认证
Honeywell SLS-4000系统的飞行校验
GBAS飞行程序评估
GBAS运行效益分析
GBAS CAT II/III研究
中国民航局空中交通管理局
4、计划进度
相关各方：
民航局计划司、飞标司、适航司
民航局空管局、地区空管局、机场当局、
设计院
航空公司、校飞中心
民航数据公司、中电集团等
Honeywell、Rockwell、Boeing等
中国民航局空中交通管理局
谢谢
中国民航局空中交通管理局
Dave Jensen, John Howard
Honeywell, Precision Landing Systems
29-30 Oct 2009
CAAC New Technology Seminar - GNSS
GNSS and GBAS Introduction
Honeywell.com
GNSS and GBAS
• Global Navigation Satellite System (GNSS)
– Current implementations, applications
– How it works
– Accuracy, Integrity
• Types of GNSS Augmentation
• Ground Based Augmentation System (GBAS)
– How it works
– Architecture
– Subsystems
• GPS Accuracy and Aircraft Protection Levels
– Un-augmented
– With WAAS
– With GBAS
Dave Jensen/John Howard
2
CAAC New Technology Seminar – GBAS 29-30 October 2009
Honeywell.com
Current GNSS
GNSS Compass GPS Galileo GLONASS
Origin China USA Europe Russia
Operational 2015 1995 2012 1995
# Satellites NA / 35 30 / 32 NA / 30 19 / 24
21 150 k 22 200 k 23 222 k 19 100 k
• Global Navigation Orbits
21,150 km
12.6h
22,200 km
12.0h
23,222 km
14.1h
19,100 km
11.3h
Satellite Systems (GNSS)
– Have become a global utility
– Provide civilian and military (precise) positioning services
– Consistent, predictable, dependable performance
• Applications for GNSS Keep Growing
– Agriculture, Aviation, Marine, Surveying, Traffic, Timing, Tectonics...
P i i i ti ith h l )
Dave Jensen/John Howard
3
CAAC New Technology Seminar – GBAS 29-30 October 2009
– Precision navigation ( with help)
Honeywell.com
GNSS Theory of Operation
Dave Jensen/John Howard
4
CAAC New Technology Seminar – GBAS 29-30 October 2009
Honeywell.com
GNSS Theory of Operation
• Each satellite transmits its position and a time signal
• The signals are delayed by the distance traveled to user
• From the delay, user calculates distance or “pseudorange” to each satellite
• User determines where there pseudoranges “overlap”
– This is your position!
• GNSS Provides Position, but No Integrity and Limited Accuracy
– Precision application require accuracy
– Safety applications require integrity
• Receiver Autonomous Integrity Monitor (RAIM)
– Provides user with integrity of their position solution
• Used in aircraft receivers
– Requires at least 5 satellites in view
– Receiver excludes 1 or 2 satellites
• Determine a “position” (with satellite excluded)
– Repeat for all satellites in view
– Determine error bound (integrity) of position by
• Discarding outlier “position” solutions
Dave Jensen/John Howard
5
CAAC New Technology Seminar – GBAS 29-30 October 2009
• Computing variance of “position” solutions
Honeywell.com
GNSS Accuracy
• GPS Position Errors can be up to 10 m
• Predominant GNSS Error Sources are:
– Ionosphere (up to 5 m)
– Satellite Position (up to 2.5 m)
– Troposphere (up to 2 m)
– Satellite Clock (up to 2 m)
– Multipath/Reflections (up to 1 m)
– Calculation/Rounding (up to 1 m)
• Poor Geometry of Satellites Increases these Errors
– Geometric Dilution of Precision (GDOP)
• Errors are Measurable, Locally-Correlated, but not Predictable
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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