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Constellation Information

Update： 2025/08/28

Message

　
  •  :In Operation
  •  :Retired
  •  :Outage
  •  :In commissioning
  •  :Maintenance
  •  :In testing
  •  :Time problem

QZS

Services Positioning Signals PRN Operation NAQU Number
QZS02 (SVN=002, Block type=Ⅱ-Q)
PNT L1C/A, L1C, L2C, L5 194 O
SLAS L1S 184 O
PTV L5S 184 O
CLAS L6D 194 O
MADOCA-PPP L6E 204 O
QZS03 (SVN=003, Block type=Ⅱ-G)
PNT L1C/A, L1C, L2C, L5 199 O
SLAS L1S 189 O
PTV L5S 189 O
PTV L1Sb 137(*1) O
CLAS L6D 199 O
MADOCA-PPP L6E 209 O
Q-ANPI Sr/Sf - O
QZS04 (SVN=004, Block type=Ⅱ-Q)
PNT L1C/A, L1C, L2C, L5 195 O
SLAS L1S 185 O
PTV L5S 185 O
CLAS L6D 195 O
MADOCA-PPP L6E 205 O
QZS1R (SVN=005, Block type=ⅡA-Q)
PNT L1C, L2C, L5 196 O
PNT L1C/B 203 O
SLAS L1S 186 O
PTV L5S 186 O
CLAS L6D 196 O
MADOCA-PPP L6E 206 O
QZS06 (SVN=007, Block type=Ⅲ-G)
PNT L1C, L5 200 O
PNT L1C/B 205 O
PTV L5S 205 O
PTV L1Sb 129(*1) X
MADOCA-PPP L6D 200 O
MADOCA-PPP L6E 210 O

*: The L1C/A and L1C/B signals are exclusively transmitted.​

*1: L1Sb operation status in this table is not described the signal contents availability. MLIT(Ministry of Land, Infrastructure, Transport and Tourism) produces the augmentation signal contents. In the case used for flight operation, User should refer to NOTAM or inquire at MLIT for information about SBAS signal contents availability.

All NAQUs including outage of service, reports of anomaly, forecast of events, etc. can be confirmed on NAQU information.

  • Check NAQU information
  • Future operational events can be confirmed here.

    • ※The information of Future operational events are updated on plans until three months ahead at the end of every month, basically.

    Current effective NAQUs that indicate the notice of outage of service, forecast of events, etc. are displayed below.

    INFORMATION NAQUs

    NUMBER NAQU DETAIL
    2023134 NOTICE ADVISORY TO QZSS USERS (NAQU) 2023134 NAQU TYPE: ALL_GENERAL
    *** GENERAL MESSAGE TO ALL QZSS USERS ***
    The operation of QZS-1(SVN001) was completely terminated on September 15, 2023 after re-orbiting.
    *** GENERAL MESSAGE TO ALL QZSS USERS ***

    POC:- QZSS Services, HTTPS://QZSS.GO.JP/

    EFFECTIVE PNT NAQUs

    NUMBER NAQU DETAIL
    2025393 NOTICE ADVISORY TO QZSS USERS (NAQU) 2025393
    SUBJ: SVN003 (PRN199) FORECAST OUTAGE JDAY 246/2059 - JDAY 250/2059
    1. NAQU TYPE: PNT_FCSTDV
    NAQU NUMBER: 2025393
    NAQU DTG: 261059Z AUG 2025
    REFERENCE NAQU: N/A
    REF NAQU DTG: N/A
    SVN: 003
    PRN: 199
    START JDAY: 246
    START TIME ZULU: 2059
    START CALENDAR DATE: 03 SEP 2025
    STOP JDAY: 250
    STOP TIME ZULU: 2059
    STOP CALENDAR DATE: 07 SEP 2025

    2. CONDITION: QZSS SATELLITE SVN003 (PRN199) WILL BE UNUSABLE ON JDAY 246
    (03 SEP 2025) BEGINNING 2059 ZULU UNTIL JDAY 250 (07 SEP 2025)
    ENDING 2059 ZULU.

    3. POC: - QZSS Services, HTTPS://QZSS.GO.JP/