new concept for mga joint experiment and test results 2016 · new concept for mga joint experiment...
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New concept for MGA joint experimentand test results 2016
11/16 2016 GESTISS
Takahashi, Higuchi, Kubo (TUMSAT)
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Overview of new MGA joint experiment(1/2)
• Objective:– Aiming to build practical, operational system/infrastructure
utilizing multi-GNSS technology in order to resolve social
problems which Asian mega cities are facing commonly, such as
heavy traffic jam, serious air pollution, environmental damages,
inefficient transportation system and rising traffic accidents.
– To establish more effective, inexpensive way to demonstrate multi-
GNSS benefits on the above applications.
• Proposed package for MGA joint experiment – A package or set of documented knowhow, procedure, guidance
and so on;
– A package of equipment and analysis tool to be used in the joint
experiment
– Initial set of experiment items2
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Overview of new MGA joint experiment(2/2)
• Initial pilot experiment will be conducted in Manila
and Hanoi in 2016 – To create a set of initial documentation
– Using the documentation, pilot experiment will be conducted as the
first iteration process for improving procedure, process, manual and
after evaluating them, they will be updated for next joint experiment.
– To demonstrate how the whole process on the joint experiment is
carried out more efficiently by using the document package.
• After 2017, the new joint experiment will be
proposed to countries in Asia and Oceania– Other Asian mega cities such as Jakarta, Bangkok, Singapore,
Kuala Lumpur and other cities.....
– Proposal on improving their public transportation system, traffic
control system, and etc. 3
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More simply…
• Let’s do GNSS test utilizing QZSS together
• Package for the test is provided
• Improve the package and can be used for other countries
• Resolve social problems using GNSS technology
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Efficient Transport System- Singapore case-
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Electronic Road PricingFlexible : type of car, place, time
and the price can be reflectedbased on the amount of traffic
Next generation system will adopt gateless system using GNSS technology.
GatelessVarious charging schemeNew service other than charging Future Telematics and ITS
Courtesy of MHI
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Initial Pilot experiment in Manila and Hanoi
• The Pilot Experiment includes following tasksI. Create Documentations
II. Local Seminar and Workshop
III. Implementation of the Joint Experiment
Long-term fixed point observation and repeated driving observation
Some positioning solutions and combination with multiple constellations are to be compared
JAXA and Ministry of Economy, Trade and Industry will support the initial pilot project respectively. GESTISS, Honda and other will conduct with local organizations
6Probe car and motor bike experiment
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Positioning methods to be evaluated
Method Rx GNSS Accuracy level NOTE
RTK Geodetic GREBQ 2-3 cm(rms) For reference value
Single Freq Positioning
GeodeticLow-cost
GREBQ Several meters
MADOCA-PPP (PPP-AR)
Geodetic GRQ Deci-meter Local error correction can be applied
DGNSS GeodeticLow-cost
GREBQ Sub-meter Option : L1-SAIF/SBAS
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Augmentation through QZS-1 for Local PPP
Local error correction
JAXA MCSOkinawa Tracking
station
Local CORS network
and/or tentative ref stations
Internet broadcast via NTRIP Caster
Japan
Test area (Local)
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QZS-1: Michibiki
satellite broadcast via LEX or L1-SAIF signal
Global error correction
Precise orbit and clock is provided through internet in Manila test
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A example set of equipment for the experiment
Driving Observation: Test vehicle
Geodetic grade GNSS Rx• GPS, Glonass, Galileo,
BeiDou, QZSS
QZSS Lex Rx
Low cost single Freq Rx• GPS, Glonass, Galileo,
BeiDou, QZSS• Raw data stream output
Fixed Point Observation: Reference station (tentative site)
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Probe terminal (Low cost single Freq Rx)• GPS, Glonass, QZSS
TBD
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Initial Pilot Experiment in Manila
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Driving Test Schedule
• Oct. 11 AM Seminar at UP
PM Setting and Highway
• Oct. 12 AM+PM Suburban (near NAMRIA)
Total 11 runs
• Oct. 13 AM+PM Urban (near NAMRIA)
Total 14 runs
11Static test for local PPP has been conducted since the end of October.
UP : University of PhilippineNAMRIA : National Mapping and Resource Information Authority
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Test Manual
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+
PPT
WORD
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Participants at NAMRIA
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Test Car
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Test course(suburban and urban near NAMRIA)
15Reference station (NetR9) installed in NAMRIA was used.
Suburban Urban
Many high-rise building…Many trees…
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Static Test for Local PPP2016/10/28-11/6
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10/28 10/29 10/30 10/31
Quick convergence within a few minutes
• Precise orbit and clock via internet from JAXA
• Local correction data was generated in NAMRIA
• Rover station is UP (14 km away from NAMRIA)
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Car Test in Suburban-1st run case-
• Almost 80% of reliable reference positions were produced using post-processed RTK (we improve more)
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99th percentile4.72m (Standalone)2.93m (DGNSS)1.47m (Local PPP)
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Big issue…
• Availability of WiFi router was significantly low. It is difficult to evaluate real-time local PPP because we definitely need the stream data of local correction, precise orbit and clock.
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Car Test in Urban• Almost 60-70 % of reliable reference positions were produced
using post-processed RTK (we improve more)
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99th percentile29.3m (Standalone)14.1m (DGNSS)
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Collaboration with Russia
• JAXA has collaborated with St. Petersburg National Research University of IT, Mechanics, and Optics (NRU ITMO).
• GESTISS has just started to collaborate with this research group in terms of joint experiment.
• We will support their activities such as PPP software implementation for volcanic disaster prevention system
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Summary
• Documents including test manual were prepared.
• Initial joint experiment in Manila was successful.
• Performance of the static local PPP was as we expected.
• WiFi connection is vital for GNSS test.
• 100 % reference position is better using high-end gyro and speed sensor.
• Preparing reference stations is very important.
• We are going to do another joint experiment in Hanoi (Vietnam).
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Thank you very much for your cooperation ! People from UP and NAMRIA
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