QZSS Navigation Data (RINEX v4)

R2026b

For RINEX version 4 files, QZSS navigation data is organized by navigation message type. Each navigation message type may provide ephemeris data, system time offset parameters, Earth orientation parameters, and ionospheric model data, depending on the message.

QZSS navigation messages are returned within the output structure data.QZSS and are grouped by navigation message type.

These QZSS navigation message types are supported:

  • data.QZSS.LNAV — Legacy Navigation (LNAV) messages transmitted on the L1 signal.

  • data.QZSS.CNAV — Civil Navigation (CNAV) messages transmitted on modernized QZSS signals.

  • data.QZSS.CNV2 — CNAV‑2 messages providing updated navigation parameters.

Each navigation message type may include one or more of these message categories:

  • Ephemeris navigation messages (EPH), which provide satellite orbit and clock parameters.

  • System time offset messages (STO), which provide parameters for transforming between time systems.

  • Earth orientation parameters messages (EOP), which provide corrections related to Earth rotation.

  • Ionospheric model messages (ION), which provide parameters for ionospheric delay correction.

Not all message types provide all categories. Only the categories listed below with links are available for each message type.

Detailed descriptions of each QZSS navigation message and its corresponding output format are provided on the message‑specific reference pages:

See Also

Topics