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Centimeter Level Augmentation Service (CLAS)

Outline

This is the download site for QZSS archives about Centimeter Level Augmentation Service (CLAS).

Broadcasted L6 messages (Centimeter-Level Augmentation Service Messages) generated by CLAS are provided according to L6 message format, refer to section 4.1. of IS-QZSS-L6-004.

Note:

Because of maintenance period of ground systems, etc., some data may be missing.

Data Definition

Refer to section 4.1. of IS-QZSS-L6-004.

Centimeter-Level augmentation information is included in the data part of L6 message.

The data part includes multiple RTCM STANDARD 10403.2 compatible messages, called "Compact SSR Messages"*.

* RTCM SC-104 QZSS Working Group, "Specification of Compact SSR Messages for Satellite Based Augmentation Service,"

RTCM Paper, Specification of Compact SSR Messages for Satellite Based Augmentation Service, Version 0.8, 17-SEP-2019.

Public Archive Data of the augmentation information based on the updated coordinate system, ITRF2014 (IGb14), compliant with IS-QZSS-L6-004 (July 14, 2021) was started by Quasi-Zenith Satellite System Services Inc. (QSS) from 05:00 UT on August 2, 2021, replacing the data compliant with the IGS05 coordinate system that had been distributed earlier.


How to use

STEP1 : Choose Data Period.

STEP2 : Choose needed data from Data List.

STEP3 : Download!


Data Select

 
L6 Signal


Data Period

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Data List

L6 Signal
Results from 2021-12-04 to 2021-12-04
page 1 / 1
ALL Data Type Reference Time Size(byte) FileName
1 L6 Signal
2021/12/04 14:00
900000
2021338O.l6
2 L6 Signal
2021/12/04 13:00
900000
2021338N.l6
3 L6 Signal
2021/12/04 12:00
900000
2021338M.l6
4 L6 Signal
2021/12/04 11:00
900000
2021338L.l6
5 L6 Signal
2021/12/04 10:00
900000
2021338K.l6
6 L6 Signal
2021/12/04 09:00
900000
2021338J.l6
7 L6 Signal
2021/12/04 08:00
900000
2021338I.l6
8 L6 Signal
2021/12/04 07:00
900000
2021338H.l6
9 L6 Signal
2021/12/04 06:00
900000
2021338G.l6
10 L6 Signal
2021/12/04 05:00
900000
2021338F.l6
11 L6 Signal
2021/12/04 04:00
900000
2021338E.l6
12 L6 Signal
2021/12/04 03:00
900000
2021338D.l6
13 L6 Signal
2021/12/04 02:00
900000
2021338C.l6
14 L6 Signal
2021/12/04 01:00
900000
2021338B.l6
15 L6 Signal
2021/12/04 00:00
900000
2021338A.l6