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Schedule for the start of the message distribution with improved number of augmented signals and satellites in MADOCA-PPP

Jul.02,2025
National Space Policy Secretariat, Cabinet Office

As announced on May 28, we would like to inform you that we will start to transmit the messages with improved number of augmented signals and satellites in MADOCA-PPP as follows.

- Date: 11:00-13:00 JST on July 7, 2025
- Format: In accordance with IS-QZSS-MDC-004
- Satellites: QZS-2, QZS-3, QZS-4, QZS-1R
- Signals: L6E and Internet distribution

Note:
- The fourth version of the User Interface Specification (IS-QZSS-MDC-004) has been posted. (There are no changes from the draft version.)

- QZSs to be serviced in the future will also support this upgrade.

- The phase bias will be changed drastically when starting the distribution of updated MADOCA-PPP. Phase Discontinuity Indicator will be counted up and service can be used as usual.
- For this upgrade, version 2.0 of MADOCALIB is also now available. For more details, please refer to the announcement on May 28.

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