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

Dec.05,2024

	Performance Standard (PDF)	Interface Specification (PDF)	Service Performance Evaluation
Satellite Positioning, Navigation and Timing Service	PS-QZSS-004 (Oct.11, 2024 / 2.6MB)(*) PS-QZSS-003 (Mar.17, 2022 / 1.1MB)	IS-QZSS-PNT-006 (Jul. 11, 2024 / 3.9MB)	Satellite Positioning, Navigation and Timing Service
Sub-meter Level Augmentation Service (SLAS)		IS-QZSS-L1S-007 (Apr. 18, 2024 / 0.8MB)	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-013 (May. 30, 2024 / 4.0MB)	-
		IS-QZSS-DCX-002 (October, 2024 / 2.1MB)	-
Positioning Technology Verification Service		IS-QZSS-TV-004 (Sep. 27, 2023 / 0.6MB)	-
MADOCA-PPP		IS-QZSS-MDC-003 (Aug. 2024 / 1.4MB)(**)	MADOCA-PPP
Signal Authentication Service	-	IS-QZSS-SAS-001 (May, 27. 2024 / 2.9MB)	-

(*) The following sections of PS-QZSS-004 will be applied after the seven-satellite constellation service is started. Until then, please refer to PS-QZSS-003. We will announce the start date of the seven-satellite constellation service on our website.
<The sections: 3.2, 4, 5, 6, 7, 9>
(**) IS-QZSS-MDC-003 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.
Current coverage areas of MADOCA-PPP ionospheric correction data in Internet distribution is shown in <Coverage area of MADOCA-PPP ionospheric correction data>.

Reference material

	Service Level Information	Content
MADOCA-PPP Ionospheric Correction for Experiment	SLI-MDC-ION (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.