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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)(*)
(Jan. 25, 2021 / 2.3MB)
Satellite Positioning, Navigation and Timing Service
(Oct. 24, 2022 / 3.9MB)(**)
Sub-meter Level Augmentation Service (SLAS) IS-QZSS-L1S-005
(Feb. 3, 2023 / 1.0MB)
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-010
(Jan. 24, 2022 / 4.5MB)
Positioning Technology Verification Service IS-QZSS-TV-003
(Dec. 27, 2019 / 0.9MB)
(Feb. 28, 2022 / 3.3MB)
Signal Authentication Service - IS-QZSS-SAS-001_Draft-002
(Jan. 24, 2023 / 2.7MB)
(*) The trial service of MADOCA-PPP will start in September 30th, 2022. The operational service of MADOCA-PPP will start in April 1st, 2024. For Signal Authentication Service, trial signal transmission is planned for July 2023 and operational service is planned to start in April 2024. Signal Authentication Service will be covered later in Performance Standard.
(**) IS-QZSS-PNT-005 is the specification for 7-Satellite Constellation. This specification will be applied between the second half of 2023 and the first half of 2024. We will inform you of the specific schedule again.
(***) IS-QZSS-SAS-001-Draft-002 is a draft version. 
  Service Level
Ionospheric Correction for Experiment
(Draft, Feb. 28, 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.