Activities onGNSS Implementation

in Korea

APEC GIT/15 Meeting June 13~17, 2011Brisbane, Australia

The 15th Meeting of the APEC GNSS

Implementation Team(GIT/15)

June 14, 2011

Sofitel Brisbane Central, Brisbane, Australia

Giwook Nam, Ph.D.

TABLE OF CONTENTS

I. GBAS Implementation

II. High Precision DGPS

III. GNSS Application

I. GBAS Implementa-tion

Background for GBAS Program

• Safety Issue– No ILS due to the terrain

– CFIT Accidents (ASIANA Airline in 1992, Air China in 1996)

• Capacity & Other Issues– Air Traffic increases 5% per year

– More fuel consumption and CO2 emission

History of GBAS Activity

• R&D for Academic Purpose– Develop GBAS prototype and T&E

– Building experience and knowledge, gathering data for imple-mentation of GBAS commercial service

’98 ’99 ’00 ’02 ’04 ’05 ’06 ’07 ’08 ’09 ’ 10

GBAS Test-Bed I (1998~2000)

DGPS Receiver (2001~2004)

GBAS Test-Bed II (2003~2007)

1

2

3

4

GBAS Test-Bed II in Jeju Airport (2008~)

GBAS Implementation Program

• Objectives– GBAS CAT-I Implementation for Commercial Service

– Establish regulatory process for GBAS implementation

• Period : Oct. 2010 ~ Sep. 2014 (4 Years)

• International Collaboration : AsA, Honeywell

• Candidate Airport : Kimpo (Traffic), Kimhae (Safety)

Milestone of GBAS Implementation Program

Facility Approval with Certified GBAS

Independent Monitor Unit

Operational Approval

• 2011 Site Assessment

• 2012 Installation

• 2013 Flight Inspection

• 2014 T&E

• 2012 GLS Procedure

• 2013 ATC/Pilot Training

• 2014 Flight Trial

II.High Precision DGPS

Objective

• Provide the precise and reliable positioning service

• Capable of recognizing lane on the road

Open Filed Urban CanyonLow SignalStrength

IntermittentSignal Blockage

Phase 1

Phase 2Development of HADGPS technolo-gies to recognize lane in Good GNSS

Signal Environment

Development of receiver technologies to recognize lane in Bad GNSS Signal

Environment

Very Weak Signal

The System Concept

① Satellite Orbit Error

② Satellite Clock Error

Signal Block

④ Ionosphere Error

⑤ Atmosphere Error

⑦ Multipath

⑧ Receiver Error

Master Sta-tion

Users

③ Satellite Data Error

⑥ Signal Deformation

① ∼ ⑥ common

Signal Acquisition

Signal Acquisition

Reference

Master Station

Application

Display)

0.450.33

U-TransportationSmart Highway

Digital Map

① ∼ ⑥Error Correction

⑦ ∼ ⑧ Error Correc-tion

Networked Carrier Phase DGPS

Research Status

2011 year2011 year2010 year2010 year

Field Test under Real Road Envi-ronment

- Development of Test Equipments- Real Data Acquisition on the Road- Data Processing for Precise Positioning

Develop Simulation Environment- Modeling GNSS Signal Error Condition- Generating the GNSS Signal with Er-ror- Evaluating Algorithms through Simu-lation

On Going

Reference &Master Station

Test User

Digital MapHDGPS Master Sta-tion

GNSS Signal Generation

Reference Station

User

Receiver

CorrectionMessage

KARI-JAXA Collaboration

• KARI– Use QZSS as test platform to broadcast correction message

– To improve the position Accuracy in Urban Canyon Environment

• JAXA– Test QZSS performance in Korea

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III.GNSS Application

Detect and Prevent React to Disaster

Development of GNSS application technologyto improve public safety

Aviation

Marine

Road

Solving national issues with GNSS technology

GPS Jam-ming

TsunamiCollision

Vehicle Acci-dent

Veer off Roll Over Jack Knifing

Give warning to drivers Mitigate effect of accident

Detect Symptoms of Acci-dent

Example of Road Disaster : Accident of Large Vehicles Carrying Dangerous Goods

Report Accident to Agency

Front GPS/INSSensor

Rear GPS/INSSensor

GPS/INS basedprecision relative position

informationGPS/INS based precise location

information

Veer off Detection

Jack Knifing Detection

Accuracy: <30~40cm

Accuracy: <many cm

Concept of Detecting Symptoms of Car Accident

Real-time simulator

Roll over Detection

Thank you