The Multi-GNSS Experiment (MGEX) has been set-up by the IGS to track, collate and analyze all available GNSS signals. This includes signals from the BeiDou, Galileo, QZSS, and IRNSS systems, as well as from modernized GPS and GLONASS satellites and any space-based augmentation system (SBAS) of interest. Analysis centers will characterize new satellites and signals, compare equipment performance and further develop processing software capable of handling multiple GNSS observation data. The IGS product portfolio will be extended to cover precise ephemeris data and bias information for all new constellations.

2015/10/15 New daily multi-GNSS differential code bias (DCB) product from CAS/IGG Wuhan.
2015/10/01 Resumed provision of 5-constellation orbit and clock product from Wuhan University (starting 2014).
2015/09/29 Launch of second BeiDou-3 IGSO satellite.
2015/09/11 Launch of Galileo FOC FM-5/6 satellites.
2015/09/01 Integration of MGEX stations into IGS network.
2015/08/05 Release of RINEX Version 3.03.
2015/07/25 Launch of first BeiDou-3 MEO satellites.
2015/07/21 New IGS antenna phase center model igs08_1854.atx with Galileo, beiDou, QZSS and IRNSS satellites (see IGS mail 7126).
2015/06/01 QZSS added to GFZ multi-constellation orbit and clock product.
2015/03/30 Launch of first BeiDou-3 IGSO satellite.
2015/03/28 Launch of IRNSS-1D.
2015/03/27 Launch of Galileo FOC FM-3/4 satellites.
2015/01/04 Start use of ECOM2 solar radiation pressure model for CODE multi-GNSS orbit and clock product (week 1826).
2014/12/31 Start of daily uploads for GPS L2C/L5 CNAV navigation data.
2014/10/16 Launch of IRNSS-1C.
2014/08/22 Launch of first pair of Galileo FOC satellites. Orbit injection failure.
2014/07/01 Addition of 10 new stations in Asia-Pacific region by Geoscience Australia.
2014/06/27 IGS Workshop, Pasadena. Recommendation to adopt GPS-style spacecraft axis conventions (+x to Sun hemisphere) for all GNSS satellites with yaw-steering attitude control mode (Galileo, QZSS, etc.) and to initiate a RINEX 3 transition plan.
2014/04/28 Start of routine CNAV transmission on GPS Block IIR-M satellites (L2C) and IIF satellites (L2C and L5).
2014/04/04 Launch of IRNSS-1B
2014/03/23 New BeiDou orbit and clock products provided by Wuhan University and GFZ (see section Products)
2014/02/24 New differential code bias (DCB) product (see section Products); updated Galileo and QZSS event lists.
2013/10/31 Updated QZSS event list
2013/08/03 Start of routine provision of JAXA's combined GPS+QZSS precise orbit and clock product for MGEX (see section Products)
2013/08/02 Provision of GPS L2C/L5 CNAV data set from June 2013 campaign (see sections GPS Status Page)
2013/07/30 RINEX files from 9 stations of the ESA/ESOC network are made available to the MGEX project including current and historic data (see MGEX station list).
2013/07/04 Updated information on real-time streams and products (see sections Real-Time Data and Real-Time Products)
2013/07/01 Launch of IRNSS-1; opened new section on Indian Regional Navigation Satellite System (IRNSS)
2013/05/29 New multi-GNSS broadcast ephemeris product made available (see section Products)
2013/05/29 Various new stations have been added to the MGEX network by CNES (REGINA network), DLR (CONGO network), and GFZ as well as individual providers (see section Network). A total of 74 stations is now available, most of which offer real-time data streams in addition to offline RINEX3 data.
2013/03/01 All participating institutions have now transitionend to the RINEX3 format for observation and navigation files submitted to the MGEX data archives. RINEX2 has been discontinued for MGEX purposes (but continues to be used for the operational IGS network).
2012/12/17 First release of QZSS products by JAXA (see section Products)
2012/11/10 Provision of orbit and clock products for Galileo and QZSS (see section Products)
2012/11/10 Revised interactive network map (see section Network)
2012/11/10 Draft parameters for BeiDou processing (see BeiDou page)
2012/10/25 Recommended parameters for Galileo and GIOVE processing (see Galileo page)
2012/10/25 Recommended parameters for QZSS processing (see QZSS page)

In accord with the overall policy of the IGS, all MGEX data and products are freely available for public use. To help IGS agencies justify funding requests, we request that users include a citation when use of IGS data or products results in a publication. For MGEX-related work, please reference

For general IGS data and products, please include a citation of

For specific MGEX products, links to recommended references are provided in the products table.

See Call for Participation document for details. Contributing stations must submit a site log to igscb. For further information contact us.

Please include the IGS logo and citation in all websites, presentations, publications, or posters that use IGS data, products, or services. IGS is a service of IAG.