report on epn real-time analysis · euref real-time products . 15/05/2013 < söhne – report on...
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Federal Agency for Cartography and Geodesy
Report on EPN Real-Time Analysis
Wolfgang Söhne
IGS real-time activities Overview
▪ IGS real-time pilot project (IGS-RT PP) Call for Participation (CfP) in 2007
▪ (EUREF-IP started in 2002) ▪ CfP included 7 sections
▪ Tracking Stations ▪ Data Centres ▪ Analysis Centres ▪ Associate Analysis Centres ▪ Analysis Center Coordinator ▪ Network Management and Monitoring ▪ Users
▪ Officially launched as a service (RTS) March, 31, 2013
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Real-time data Status of the real-time network
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Real-time data Status of the real-time network
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Real-time data Availability
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Real-time data Availability
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Real-time data Availability
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Real-time data Redundancy concept
▪ Starting point: upload from each station to one single regional caster
▪ Next: upload from several stations to local/national caster → pulling all streams to the regional caster
▪ Next: introduction of three regional casters → pulling all streams either from prime regional caster or from the local/national casters
▪ Next: streaming from each station to two different casters → under development for the IGS RTS
▪ Next: regional casters pulling from two different global casters
▪ Goal: 24/7 real-time data flow to the user w/o outages
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Real-time data Redundancy concept
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Ref-1 Ref-2 … Ref-m
Regional Broadcaster
User
Real-time data Redundancy concept
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Ref-1 Ref-2 … Ref-m
Regional Broadcaster
User
Ref-n … Ref-x
National Broadcaster
Real-time data Redundancy concept
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Ref-1 Ref-2 … Ref-m
Regional Broadcaster 1
User
Ref-n … Ref-x
National Broadcaster
Regional Broadcaster n
Real-time data Redundancy concept
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Ref-1 Ref-2 … Ref-m
Regional Broadcaster 1
User
Ref-n … Ref-x
National Broadcaster
Regional Broadcaster n
Real-time analysis centres processing scheme
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Real-time analysis centres
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Real-time analysis centres
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Real-time analysis centres
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→ BKG/CTU, CNES, DLR and GMV with additional GPS+GLO solution
Real-time analysis centres combination
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Real-time analysis centres combination
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Real-time analysis centres IGS combination products
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▪ IGS01 (GPS-only; single epoch combination) ▪ IGS02 (GPS-only; Kalman filter combination) ▪ IGS03 (GPS+GLO; Kalman filter combination of
BKG/CTU, CNES, DLR and GMV)
EUREF real-time products
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▪ EUREF orbit & clock solution referred to ETRS89 ▪ Orbit and clock transformation implemented in BNC ▪ EUREF01 (GPS-only; combination of BKG/CTU,
CNES, DLR and GMV) ▪ EUREF02 (GPS+GLO; combination of BKG/CTU,
CNES, DLR and GMV) ▪ Future: EUREF03 (GPS+GLO+GAL)
− Standardisation of broadcast ephemeris neccessary
EUREF real-time products
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EUREF real-time products
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EUREF real-time products
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→ http://igs.bkg.bund.de/ntrip/PPP#Scene26, for ZIM2
Real-time management & monitoring
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▪ EPN CB is hosting several web pages − Data access
(http://www.epncb.oma.be/_networkdata/data_access/real_time/)
− Completeness of highrate files (http://www.epncb.oma.be/_networkdata/data_access/highrate/)
− Products (http://www.epncb.oma.be/_productsservices/realtimecorrections/)
▪ Monitoring of BKG broadcasters (access, usage, outages, etc.) with many, many shell and perl scripts
▪ Validation of orbit & clock products with PPP using BNC (http://igs.bkg.bund.de/ntrip/ppp)
Real-time data User statistics
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Real-time data User statistics
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Real-time data User statistics
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Real-time data User statistics
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Real-time data User statistics
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Real-time products User statistics
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Real-time products User statistics
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IGS real-time activities Overview (2)
▪ Officially launched as a service March, 31, 2013 ▪ Between March, 28, and May, 03 (5 weeks) 160
requests for user registration ▪ Issue with embargo list states ▪ Two global observations broadcasters
▪ www.igs-ip.net ▪ rt.igs.org ▪ (igs.org:2101?)
▪ Two global products casters ▪ products.igs-ip.net ▪ rt.igs.org
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Summary & Outlook
▪ Status of real-time data on a constant ~ 50 % level of all EPN stations → RT capability as requirement for new EPN stations?
▪ Real-time analysis centres not (well) represented in the EPN
▪ Usage, monitoring etc. not equally balanced between the three EUREF broadcasters
▪ First regional real-time products available (EUREF01, EUREF02)
▪ Usage (success) of real-time products depending on the implementation in receivers
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