IGS M‐GEX  ‐The IGS Multi‐GNSS Global Experiment

R. Weber

Workshop on GNSS Biases

Jan. 18‐19, 2012, Bern

Institute of Geodesy and Geophysics, TU-Vienna

• GLONASS -> International GNSS Service (IGS)

– 1998 International GLONASS Experiment (IGEX)– IGEX -> IGLOS – GLONASS Service– GLONASS fully incorporated into IGS 2003 – from GPS Service -> GPS + GLONASS = GNSS – International GNSS Service, name change in 2005– Currently 130+ GPS/GLONASS stations in IGS

network

IGS Multi-GNSS Global Experiment Background

Current Situation

• New and modernized systems are upcoming or availableCOMPASS/BeiDou, QZSS, GIOVE/Galileo, plus modernization of GPS & GLONASS,plus SBAS

• Receivers have multi-GNSS capabilities• IGS must prepare for incorporation of new GNSS• Recommendation from Newcastle 2010 Workshop:

Prepare Call for Participation in an IGS Multi-GNSS Global Experiment

Thus, the IGS launches an ‘Experiment to operate an expanded network of new receivers capable of tracking new signals in addition

to GPS&GLONASS’

IGS Multi-GNSS Global Experiment (IGS M-GEX)

IGS M-GEX Schedule

• Aug 2011 ‐ Call for Participation released• Oct 30, 2011 ‐ Proposals due• Dec 15, 2011 – Proposals evaluated by the Organizing 

Committee• Feb 1, 2012 – Experiment begins• Jul 23‐27 – First Results Evaluation and discussion at 

IGS 2012 Workshop, Olsztyn, Poland• August 2012 – Experiment ends for temporary 

installations; tracking continues for permanent installations

• Note: Interested organizations can join at any time

http://igs.org

•Call for tracking sites- expansion of continuous tracking network according toIGS standards

- include other stations (temporary or not IGS standards)that can enable engineering analysis of Multi-GNSS

- antenna calibrations strongly encouraged/ required- software receiver encouraged- RINEX V3.01 format- no interference with daily IGS operations !

•Call for Data Centers- archive tracking data and make it publicly available- no interference with daily IGS operations !

IGS Multi-GNSS Global Experiment

IGS Multi-GNSS Global Experiment 2012

• Call for Analysis ‐ Analysis and engineering analysis strongly

encouraged (at least notice plans)- not to disrupt the daily IGS operations and

delivery of data and products !

• Call for collaboration with federated networks to realize multi-GNSS global network- JAXA Multi-GNSS Demonstration Campaign, Asia- CONGO network- CNES network- others

IGS Multi-GNSS Global Experiment

• Call asks in first place for timely RINEX tracking data‐ track as many signals as possible (focus on GNSS, butcan include SBAS)

• Analysis of the new multi‐GNSS assumed as an element of IGS ACs on a ‘best effort’ basis

• Analysis and engineering analysis by other interested groups strongly encouraged

• Include Real Time tracking aspect and signal utilization which will be coordinated by the IGS Real‐Time Pilot Project and WG

GNSS WG coordinates this ‚Experiment‘

IGS Multi-GNSS Global Experiment

• Experiment Tasks‐ setup tracking network of Multi‐GNSS equipment   ‐ make RINEX tracking data publicly available(RT‐data policy to be defined)

‐ experiment with data flow and signals‐ qualify equipment and signals

• Future Tasks (mid‐term)‐ upgrade IGS network to Multi‐GNSS‐ generate Multi‐GNSS products

Summary

Proposed M‐GEX sites (as of Dec 2011)

Proposals (as of Dec 2011)• 3 Datacenter (CDDIS, IGN, BKG)+ 1 RT Data Center (BKG)

• several Analyses Proposals• About 35 stations + 7 JAXA sites• 3  Trimble NETR8 + 10 Trimble NETR9  +  1 Trimble NETR5   ??• 6 LEICA GRX1200+GNSS  +  1 Leica GR25  +  1 Leica GR10• 4 JAVAD TRE_G3T DELTA  + 1 JAVAD TRE_G3T DELTA• 1 TPS NET‐G3A• 1 NOV OEM6• 1 SEPT POLARX4TR• 1 IFEN NX.NTR.500.D +1  IFEN SX.NSR.V2.801 (Software Receiver)

• We strongly encourage interested groupsand especially manufacturers to support thisexperiment by proposing additionals sites equippedwith their most recent multi‐GNSS receivers(currently Novatel, Septentrio, Topcon , Ashtech not or under‐represented)

• Experiment can be joined any time• Jul 23‐27 – First Results Evaluation and discussion at IGS 2012 Workshop, Olsztyn, Poland

Thank you for your attention

Thank you

for your attention

Backup slides

IGS Multi-GNSS Global Experiment 2011-2012

• International GNSS Service (IGS)– Aware of new signals available or becoming available soon:

• COMPASS/BeiDou, QZ‐SS, GIOVE/Galileo, GAGAN– Plus modernization of GPS & GLONASS– Aware that new receivers have multi‐GNSS capabilities – Recommendation from Newcastle 2010 Workshop:

• Prepare Call for Participation in Multi‐GNSS Global Experiment• Support JAXA Multi‐GNSS proposal activities

• IGS must prepare for incorporation of new GNSS• Experiment to operate an expanded network of new receivers capable of tracking new signals in addition to GPS & GLONASS 

IGS Multi‐GNSS Global Experiment 2011‐2012

• Call for Participation in final draft• Principles:

– Call for new stations• Expansion of continuous tracking network according to IGS standards• Include other stations that may be more temporary or do not meet IGS standards that 

can enable engineering analysis of multi‐GNSS• Track as many signals as possible, focus on GNSS, but can include SBAS or WAAS• Emphasize that this experiment is in conjunction with ongoing IGS operations and :

NOT TO DISTURB STABLE IGS STATIONS, ESPECIALLY REFERENCE FRAME STATIONS• If new equipment is to be installed at existing IGS stations, follow the transition 

guidelines and run equipment in parallel• Antenna calibrations are strongly encouraged to the extent possible, especially for longer 

term station operations (extend beyond period of experiment)• Software receiver encouraged, also per Newcastle Recommendations

– Domes numbers needed from IERS– Station information needed at IGS Central Bureau Information System– Strongly encourage site ties as appropriate, especially for planed continuous 

stations, but no requirement for site ties– RINEX 3.01 format, or upgraded RINEX prior to experiment