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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)(*1)
(Jan. 25, 2021 / 2.3MB)
Satellite Positioning, Navigation and Timing Service
Sub-meter Level Augmentation Service (SLAS) IS-QZSS-L1S-004
(Dec. 27, 2019 / 1.3MB)
Sub-meter Level Augmentation Service (SLAS)
Centimeter Level Augmentation Service (CLAS) IS-QZSS-L6-004
(Jul. 14, 2021 / 1.4MB)

(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)
(*1) The trial service of MADOCA-PPP will start in September 30th, 2022. The operational service of MADOCA-PPP will start in April 1st, 2024.
(*2) This will apply from September 30, 2022, when the MADOCA-PPP trial operation begins.
  Service Level
Centimeter Level
Augmentation Service
for Experiment
(Draft, March 28, 2017
/ PDF: 253KB)
This document defines reference information
such as service area and accuracy
in the Centimeter Level Augmentation Service for Experiment.
For information about the data formats currently available for
the CLAS (technology validation), refer to the
“Data Format Specification” on the Global Positioning
Augmentation Service (GPAS) Corporation website.  * Under “SERVICE”
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.