User Level Monitoring - Geospatial World Forum

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Transcript User Level Monitoring - Geospatial World Forum

Slide 1

INTEGRITY MONITORING SYSTEM FOR
SPACE-BASED NAVIGATION AND
POSITIONING IN 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


Slide 2

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


Slide 3

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.

Malaysia

GPS, GLONASS, GALILEO, COMPASS, QZSS

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 4

The Signal Integrity
• 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.
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 5

L.Heng et. al., 2010
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 6

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


Slide 7

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


Slide 8

The GNSS CORS
Peninsular Malaysia

Langkawi National
Observatory
(ANGKASA)

Kota Bharu
Malaysian Metrological Department
(ANGKASA/MMD)

COMING SOON
Penang
(MARDI, Malaysia)
Bagan Datoh
Sistem Pelayaran Satelit
(SISPELSAT, JLM)

Kuantan
Sistem Perlayaran Satelit
(SISPELSAT, JLM)

Kepong, Kuala Lumpur
(Enviro Land Service)

Main Processing Centre

Shah Alam, Selangor
(UiTM)

ISKANDAR Malaysia
UTM, MPKU, PTP, KKPG

National Space Centre
(ANGKASA), Selangor
Melaka
Sistem Pelayaran Satelit (SISPELSAT, JLM)
COMING SOON
Pontian, Johor
MARDI, Malaysia)

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 9

CORS Collaboration:

Government Agencies, Universities, & Industry

Collaboration!
Data Sharing & Combine Expertise!
Opportunities!

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 10

System Design & Architecture of
Integrity Monitoring System

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 11

Model-based Design

ANGKASA GNSS/DGPS
INTEGRITY
MONITORING
CENTRE

GPS + GLONASS Satellite

GNSS CORS
Data Storage /
Web Server
CORS1

CORS2

(TEQC Processor)

(NANU Processor)

INTERNET
GPS + GLONASS Satellite

INTERNET

UTM
PROCESSING CENTRE

SISPELSAT

(DGPS Processor)
Data Storage
SISP1

SISP2

SISP3

SISP4

MULTI USER
INTERNET

ANGKASA Web-Based


SYSTEM LEVEL
MONITORING
(NANUs for GPS &
GLONASS)



GROUND LEVEL MONITORING
(signal availability, range monitoring
ionosphere, cycle slip, missing
observation, etc.)



USER LEVEL
MONITORING
(DGPS correction – satellite by
satellite, SISPELSAT)


Slide 12

System Architecture
NTRIP
CASTER
INTERNET

DGPS
Processor

Network-RTK
(VRS) Processor

IOMOS
Processor

GPS/GNSS
Data Quality
Processor

DGPS
Processor

Main
Database

GPS Seismic
Processor

INTERNET

Real Time User
Web Server

Collaborators


Slide 13

Infrastructure
Setup

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 14

Site Reconnaissance & CORS Installation
Malaysia Meteorological Dept. Kota Bharu

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 15

SISPELSAT CORS at Malaysia Marine Department,
Melaka

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 16

Infrastructure Setup: The Control Centre

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 17

Infrastructure Setup: Communication
Control Centre

NTRIP Server
ANGKASA

NTRIP Server
ISKANDARnet

NTRIP Server
JLM

NTRIP Server
NANU

TCP/IP
Control Centre

NTRIP Caster

Processor Server

Main Database

TCP/IP
Post-Process User
(RINEX File
Download)

Post-Process User
(RTCM File
Download)

Web Server
E-Mail/SMS/Social Network

Real Time
User

User

USER APPLICATION

The Integrity Monitoring System utilizes Internet and NTRIP technology


Slide 18

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


Slide 19

Preliminary
Output

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 20

> AGENSI ANGKASA NEGARA

main page

news

> ABOUT US

service
sign up

Today Monitoring
SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING

Today Discussion

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam

sign in


Slide 21

AGENSI ANGKASA NEGARA

main page

news

ABOUT US

service
sign up

sign in

Today Monitoring
SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING
USER LEVEL MONITORING

Please click the station for the information

Today Discussion

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 22

AGENSI ANGKASA NEGARA

main page

news

ABOUT US

service
sign up

sign in

Station Information

ISKANDARnet 1
Today Monitoring

Operated & maintained by
UTM-GNSS & Geodynamics Research Group
Station ID

SYSTEM LEVEL MONITORING

Location

GROUND LEVEL MONITORING
USER LEVEL MONITORING

Today Discussion

ITRF
2008

RSO
Geoce
ntric
IGS
Conve
ntion

ISK1
Block C02, FKSG, Universiti
Teknologi Malaysia (UTM)

Latitude

1° 33’ 36.39495” N

Longitude

103° 38’ 08.89223” E

Ellipsoidal Height

61.551 m

Easting

626585.075 m

Northing

172530.806 m

GPS Receiver

Trimble 4700

GPS Antenna

Trimble L1/L2 Micro-centred
with Ground Plane
TRM33429.20+GP

Radio-link

RTCM 2.0 channel 01

NTRIP

IP: XXXXX.XXX.XXX

Com

More ….
Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 23

AGENSI ANGKASA NEGARA

main page

news

ABOUT US

service
sign up

sign in

ISKANDARnet1
Today Monitoring
Satellite Availability & signal strength

GNSS signal quality

SYSTEM LEVEL MONITORING
GROUND LEVEL MONITORING

GPS L1

DGPS Corrections

Reliability of satellite for
DGPS correction

USER LEVEL MONITORING
DGPS correction latency

Today Discussion
Variation of fine PRC

GPS L2

Alert !
DGPS corrections from Satellite
PRN 31 & 32 are out of range

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 24

AGENSI ANGKASA NEGARA

main page

news

ABOUT US

service
sign up

Base station
Please click the station

Today Monitoring

Rover station

Please click the station
or

SYSTEM LEVEL MONITORING

Insert coordinate

GROUND LEVEL MONITORING

Lat

ddd.mm.ss

USER LEVEL MONITORING

Long

ddd.mm.ss

Today Discussion

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam

sign in


Slide 25

AGENSI ANGKASA NEGARA

main page

news

ABOUT US

service
sign up

Base station
Banting

Today Monitoring

Rover station

ISKANDARnet2
or

SYSTEM LEVEL MONITORING

Insert coordinate

GROUND LEVEL MONITORING

Lat

ddd.mm.ss

USER LEVEL MONITORING

Long

ddd.mm.ss

Today Discussion

Distance : 338.33 km
Accuracy : 0.325 m (rms)

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam

sign in


Slide 26

User Level Monitoring – DGPS Module

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 27

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 spacebased navigation and positioning in Malaysia.

Geospatial World Forum 13-16 May 2013, Beurs-World Trade Centre Rotterdam


Slide 28

end

MALAYSIA
Maleisië