Planned update of QZSS's CLAS and MADOCA-PPP in July 2025

[yoronneko]

[Problem]

Cabinet Office, Government of Japan announced New MADOCA-PPP messages and will transmit from this July. They will also update CLAS. Detail upgrade information is provided at the QZSS's interface specification.

The main update is to assume receiving multiple satellite signals. In addition, the future MADOCA-PPP includes BeiDou 3 augmentation messages, and it results in incompatible with current MADOCA-PPP decoder. The conventional MADOCA-PPP decoder fails to decode message when messages include BeiDou 3!

[Possible Solution]

QZS L6 Tool requires to decode multiple L6 messages simultaneously. The new L6 sample data would be available at sample data directory of MADOCALIB ver.2.0, the reference software of MADOCA-PPP.

[yoronneko]

With use of the MADOCALIB ver.2.0 sample data, I turn out that the qzsl6read.py also requires to be updated for QZNMA (Quasi-Zenith satellite Navigation Authentication Message) because it raises an unknown message type error:

$ qzsl6read.py -t 2 -c < sample_data/data/l6_is-qzss-mdc-004/2025/091/2025091A.204.l6 | lv
QZNMA G07(unknown message_type=8) TOW=0 Eph=0 KeyID=0 salt=0
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000
204 Hitachi-Ota:0 QZNMA (inactive) G07(unknown message_type=8)