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CLAS: Maximum Number of Augmented Satellites Started to Increase in Accordance with IS-QZSS-L6-007

Aug.28,2025
National Space Policy Secretariat, Cabinet Office

The CLAS service will be upgraded as follows.

- Service Upgrade Summary
In accordance with IS-QZSS-L6-007, CLAS will increase the maximum number of augmented satellites.

- Service Upgrade Start Date
September 1, 2025 0:00:00（UTC）

With this upgrade, the maximum number of augmented satellites can be increased by using receivers compliant with IS-QZSS-L6-007 and combining L6D signals of CLAS Transmit Pattern 1 and 2 defined in Section 4.1.1.2 of IS-QZSS-L6-007.
CLASLIB for IS-QZSS-L6-007 is available as version 0.8.2. Please see below for download and terms of use.

Existing receivers which do not combine CLAS Transmit Pattern 1 and 2 will continue to support the CLAS services as before.