Get started!

  1. Go to Login page
  2. Type in your Login ID and Password
Logging in to the M3G portal allows you to upload/update metadata of your stations, agencies, networks etc. The GNSS stations can be your own stations as well as stations owned by a third-party agency that has given you a mandate to maintain their metadata in M3G.

  1. If your agency has already an account in M3G, then you can find your agency M3G Login ID online: go to the Station Metadata Maintainers page, click on (top right) and add the M3G Login ID column to the table
  2. If your agency is not in the list, then have a look at this FAQ "How to obtain a M3G account?"

  1. Go to Login page
  2. Type in your Login ID and then click on the Reset Password button
  3. All contacts designated by your agency (set up in your Edit My Agency Information form available after login) will get an email with a link to reset the password.
  4. Click on the link provided in the email and choose a new password.
If you do not receive the link via email (first check your spam filter), you are not listed in M3G as one of your agency contacts. You can ask one of your colleagues included in your agency contacts to reset the password, log in to M3G, add you to the list of agency contacts and provide you with the new M3G password.

Quick Start

  1. Go to Login page
  2. Log in to M3G using your Login ID and Password.

  1. Provide the information regarding your agency: after login, go to the agency-specific tab (top right in the website menu bar) and click on Edit My Agency Information.
  2. Fill in the information in all mandatory fields (marked with *)
  3. Enter all contacts appearing in your site logs, taking into consideration that:
    • At least one non-personal contact, e.g. GNSS team, gnss@organsation.com must be entered under PUBLIC NON-PERSONAL CONTACT INFORMATION.
      In the site log, the contacts entered in the Prepared by field (Section 0.), the Primary contact of the On-Site, Point of Contact Agency Information and the Responsible Agency (Sections 11. and 12.) can only be selected from the public non-personal contacts.
    • Entering PERSONAL CONTACT INFORMATION (subject to EU GDPR) is possible, but discouraged. In the site log, personal contacts can only be used as Secondary contact of the On-Site, Point of Contact Agency Information and the Responsible Agency (sections 11 and 12). However, if the personal contact has not given M3G permission to make their contact information publicly available (see PUBLICATION STATUS and Send GDPR e-mail button), the personal contact information will be removed from the site log before publishing it.
  4. If any other agency is involved in the operation of the station(s) managed by your agency (e.g., the agency owning the stations or the agency of the on-site contact):
    • go to the agency-specific tab (top right in the website menu bar) and click on Edit Third-party Agencies Information
    • follow the steps above (click on under the DETAIL column), as you did for the information regarding your agency.
Note that:
  • Any change to the contacts will trigger an update of all the site logs where the contact is used.
Please check our privacy policy to know how we handle your personal data.

  1. After login, go to the agency-specific tab (top right in the website menu bar) and click on i class="fa-solid fa-list-check"> Edit Metadata under the NETWORKS METADATA
  2. Use (top right) to create a new local or national network if the network is not in the list. Make sure you do not try to set up a network that is already defined in M3G. Have a look at GNSS networks & projects : the table lists all networks already set up in M3G.
Note that:
  • Each network must have a unique abbreviation.

  1. After login, go to the agency-specific tab (top right in the website menu bar) and click on Add Station(s)
  2. Type the station(s) 9-char ID in the text box and click on the Save> button. You will be redirected to the Edit all Metadata page.
  3. Scroll to the newly added station(s) (or use the column filters) in the table
  4. Click on the alerts (under the ALERTS column) to quickly see what information is missing.
  5. Click on in the corresponding column to edit and save the information related to the data license, embargo period and DOI of the station daily RINEX data
  6. Click on under the STATION PICTURE(S) column to upload pictures of the the GNSS antenna, monument etc.
  7. Click on in the SITE LOG UPDATE column to update the site log
  8. Propose your station to at least one network (it is recommended to propose your station to your local/national network), see this FAQ on how to do this
Note that:
  • M3G will automatically label a new station as Proposed or Included in international networks after consultation with the network coordinators of the international networks.

  1. After login, click on Edit all Metadata in the agency-specific tab (top right in the website menu bar)
  2. Click on in the SITE LOG UPDATE column to update the site log
Note that:
  • If the station is not in the list, you need to follow the steps in 4. Set up/add a new station
  • Save the site log as draft by clicking on Save all to draft (top)
  • Submit the site log for publication, by clicking on Submit saved draft for publication

  1. After login, click on Edit all Metadata in the agency-specific tab (top right in the website menu bar)
  2. Click on in the SITE LOG UPDATE column to update the site log and you will be redirected to the station-specific site log form
  3. Click on the Import site log button (top) to upload the site log from your local disk
  4. Save the site log as draft, by clicking on Save all to draft (top)
  5. Submit the site log for publication, clicking on Submit saved draft for publication
Note that:
  • After submitting the site log, all contacts (except for public non-personal contacts) mentioned in the site log will receive an email with subject [M3G][REQUEST] Publication of your personal data. If the personal contact does not grant M3G permission to make their contact information publicly available, the personal contact information will be removed from the site log before publishing it.

M3G offers some of its functionalities through a RESTful HTTP API that allows you to interact with M3G purely as data that can be uploaded, accessed, searched for, etc. via HTTP requests. At present, M3G allows you to retrieve info on a given M3G entry (i.e. a network, a station), update part of a station site log or ask a query to locate many M3G entries at the same time. In the M3G menu bar Documentation you can access the M3G API submenu, containing: