INTEGRITY MONITORING SYSTEM INTEGRITY MONITORING SYSTEM FOR SPACE-BASED NAVIGATION AND FOR SPACE-BASED NAVIGATION AND POSITIONING IN MALAYSIA POSITIONING IN MALAYSIA Ooi Wei Han 1 , Moslin S.I 1 ., Ahmad N. 1 , Subari M.D. 1 , Musa T.A. 2 , Othman R. 2 , Omar A.H. 2 , Musliman I.A. 2 1 National Space Agency (ANGKASA) Space Application and Technology Development Unit 2 Universiti Teknologi Malaysia GNSS and Geodynamics Research Group Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Transcript
INTEGRITY MONITORING INTEGRITY MONITORING SYSTEM FOR SPACE-BASED SYSTEM FOR SPACE-BASED
NAVIGATION AND POSITIONING NAVIGATION AND POSITIONING IN MALAYSIAIN MALAYSIA
Ooi Wei Han1, Moslin S.I1., Ahmad N.1, Subari M.D.1,
Musa T.A.2, Othman R.2, Omar A.H.2, Musliman I.A.2
1National Space Agency (ANGKASA) Space Application and Technology Development Unit
2Universiti Teknologi Malaysia GNSS and Geodynamics Research Group
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Contents
• Introduction• Project Aims, Objectives & Scope of Work• The GNSS CORS & Collaboration• Design & Architecture of GNSS Integrity Monitoring System• Infrastructure Setup • Preliminary Output• Concluding Remarks
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Introduction
• In Malaysia, navigation technology has become an essential tool in various applications for positioning in military and civilian sectors.
• With the full operational constellation and modernization of the GNSS such as GPS and GLONASS, the accuracy of positioning has definitely improved.
GPS, GLONASS, GALILEO, COMPASS, QZSS
Malaysia
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
• GNSS signals are weak and easily be interrupted.• Affected by variety types of errors at various stages • Such as:
- satellite clock and orbit errors;- ionospheric and tropospheric delays;- receiver clock error;- possible cycle slips;- multipath;- and etc.
• Several incidents indicated signals in failure mode and resulted significant position errors.
The Signal Integrity
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
L.Heng et. al., 2010
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Aims & Objectives
The National Space Agency (ANGKASA) in collaboration with universities, government and industries sectors is currently in the midst of developing an integrity monitoring system for space-based positioning in Malaysia.
The aim of this project is to provide an integrity monitoring system for space-based navigation and positioning in Malaysia. This aim embarks three objectives:•To establish GPS/GNSS CORS network over Peninsular Malaysia•To determine on integrity and reliability of GNSS and DGPS signals over country •To provide a warning of any signal anomalies at all time.
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Scope of Work
• Set-up GNSS ground stations with real-time data streaming.
• Set-up control centre at ANGKASA & processing centre at UTM.
• Set-up database for GNSS & DGPS integrity monitoring system.
• Set-up web-based service for GNSS & DGPS integrity monitoring system.
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Peninsular MalaysiaLangkawi National Observatory (ANGKASA)
Kota BharuMalaysian Metrological Department
(ANGKASA/MMD)
KuantanSistem Perlayaran Satelit
(SISPELSAT, JLM)
Main Processing CentreISKANDAR Malaysia
UTM, MPKU, PTP, KKPG
Bagan DatohSistem Pelayaran Satelit (SISPELSAT, JLM)
National Space Centre (ANGKASA), Selangor
COMING SOONPontian, JohorMARDI, Malaysia)
Kepong, Kuala Lumpur(Enviro Land Service)
Shah Alam, Selangor(UiTM)
MelakaSistem Pelayaran Satelit (SISPELSAT, JLM)
COMING SOONPenang(MARDI, Malaysia)
The GNSS CORS
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
CORS Collaboration:Government Agencies, Universities, & Industry
Collaboration!Data Sharing & Combine Expertise!
Opportunities!
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
System Design & Architecture of Integrity Monitoring System
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Infrastructure Setup
Site Reconnaissance & CORS InstallationMalaysia Meteorological Dept. Kota Bharu
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
SISPELSAT CORS at Malaysia Marine Department, Melaka
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Infrastructure Setup: The Control Centre
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
The Integrity Monitoring System utilizes Internet and NTRIP technology
Infrastructure Setup: Communication
USER APPLICATION
UserReal Time
User
Post-Process User(RINEX File Download)
Post-Process User(RTCM File Download)
Control Centre
Processor Server NTRIP Caster Main Database Web Server
E-Mail/SMS/Social Network
TCP/IP
Control Centre
NTRIP ServerNANU
NTRIP ServerJLM
NTRIP ServerISKANDARnet
NTRIP ServerANGKASA
TCP/IP
Infrastructure Setup: Database System
• Uses MySQL as the database management system.
• Data for every second will be stored - need a huge data storage to keep the large data size.
• Database system should be robust and flexible to handle various emergencies and does not crash when error occurs.
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Preliminary Output
sign up sign up sign in
> AGENSI ANGKASA NEGARA > ABOUT US
main page news serviceservice
SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today Discussion
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
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Please click the station for the information
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SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today Discussion
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Station Information
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SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today Discussion
ISKANDARnet 1Operated & maintained by UTM-GNSS & Geodynamics Research Group
Station ID ISK1
LocationBlock C02, FKSG, Universiti Teknologi Malaysia (UTM)
ITRF 2008
Latitude 1° 33’ 36.39495” N
Longitude 103° 38’ 08.89223” E
Ellipsoidal Height 61.551 m
RSO Geocentric
Easting 626585.075 m
Northing 172530.806 m
IGS Convention
GPS Receiver Trimble 4700
GPS AntennaTrimble L1/L2 Micro-centred with Ground PlaneTRM33429.20+GP
ComRadio-link RTCM 2.0 channel 01
NTRIP IP: XXXXX.XXX.XXX
More ….
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
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SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today Discussion
Reliability of satellite for DGPS correction
DGPS correction latency
Variation of fine PRC
ISKANDARnet1
Satellite Availability & signal strength GNSS signal quality DGPS Corrections
DGPS corrections from Satellite PRN 31 & 32 are out of range
Alert !
GPS L1
GPS L2
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
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SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today Discussion
Please click the station
Insert coordinate or
Base station
Rover station
Lat
Long
ddd.mm.ss
ddd.mm.ss
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Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
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SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING
Today Monitoring
Today DiscussionDistance : 338.33 kmAccuracy : 0.325 m (rms)
Banting
ISKANDARnet2
Insert coordinate or
Base station
Rover station
Lat
Long
ddd.mm.ss
ddd.mm.ss
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
User Level Monitoring – DGPS Module
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
Concluding Remarks
•Three different services will be make available – to monitor satellite anomalies, signals at CORS, DGPS correction and alert to user.
•The project show excellent collaborations amongst government agencies, universities and industry in developing the integrity monitoring system for space-based navigation and positioning in Malaysia.
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam
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