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Performance Standard (PS-QZSS) and Interface Specification (IS-QZSS)

  Performance Standard (PDF) Interface Specification (PDF) Service Performance Evaluation
Satellite Positioning, Navigation and Timing Service PS-QZSS-003
(Mar.17, 2022 / 1.1MB)
(Oct. 24, 2022 / 3.9MB)
Satellite Positioning, Navigation and Timing Service
Sub-meter Level Augmentation Service (SLAS) IS-QZSS-L1S-006
(Oct. 25, 2023 / 1.1MB)
Sub-meter Level Augmentation Service (SLAS)
Centimeter Level Augmentation Service (CLAS) IS-QZSS-L6-005
(Sep. 21, 2021 / 1.4MB)
Centimeter Level Augmentation Service (CLAS)
Satellite Report for Disaster and Crisis Management (DC Report) IS-QZSS-DCR-011
(Oct. 18, 2023 / 4.0MB)
(Mar. 29, 2024 / 2.2MB)
Positioning Technology Verification Service IS-QZSS-TV-004
(Sep. 27, 2023 / 0.6MB)
(Nov. 2023 / 1.4MB)
Signal Authentication Service - IS-QZSS-SAS-001_Draft-002
(Jan. 24, 2023 / 2.7MB)
(*) Signal Authentication Service will be covered later in Performance Standard.
In addition, there is no description for the Satellite Report for Disaster and Crisis Management (Extended Information) (DCX).
(**) IS-QZSS-SAS-001-Draft-002 is a draft version. IS-QZSS-SAS-001 will be released soon.
(***) IS-QZSS-MDC-002 includes the specification of ionospheric correction message, which is scheduled to be transmitted from QZS-6 and 7. Ionospheric correction transmission will start as the operational service after the experimental service. We will inform you of the specific schedule again.
  Service Level
Ionospheric Correction for Experiment
(Draft, February 2022
/ PDF: 187KB)
As a demonstration, the wide-range ionospheric correction
for the Asia and Oceania regions is transmitted by the L6D
messeges to shorten the TTFF (Timi To First Fix) of
MADOCA-PPP. This document describes the reference
information of this demonstration.