MGEX (Multi GNSS Experiment) Real-Time Streaming FAQ

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What stream content is accepted?

It is expected that you to provide a stream that contains more than just GPS and GLONASS. M-GEX has a particular interest in Galileo, SBAS, QZSS and COMPASS observations. Whatever comes in addition to GPS and GLONASS is appreciated.

 

Which stream upload format is accepted?

Streams in HP-MSM format are preferred. HP-MSM stands for 'High Precision Multiple Signals Messages'. The format is currently under development in RTCM. If your firmware does not yet support HP-MSM, we would do our best to handle incoming vendor specific raw proprietary stream formats like LB2, RT27, SBF, ATOM etc.

 

How would I have to upload my stream?

Only streams made available via Ntrip transport protocol are accepted. Contact [igs-ip@bkg.bund.de] to receive account details for uploading a stream to Ntrip broadcaster http://mgex.igs-ip.net/home. Note that all modern geodetic dual frequency receivers nowadays support Ntrip through their firmware.

 

How can I retrieve streams in HP-MSM format?

Please register for an M-GEX Ntrip user account at http://register.rtcm-ntrip.org. Note that streams in vendor specific proprietary formats are not meant for further dissemination.

 

What about RINEX v3 files converted from streams?

We convert highrate RINEX version 3 files from all available HP-MSM streams. These files are compiled in 15 min batches with 1 sec sampling rate and saved in our GNSS Data Center at ftp://igs.bkg.bund.de/<project>/<highrate_v3>.  

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