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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
Data Period
Data List
ALL | Data Type | Reference Time | Size(byte) | FileName |
---|---|---|---|---|
1 | L6 Signal | 2023/02/04 13:00 |
900000 |
2023035N.l6 |
2 | L6 Signal | 2023/02/04 12:00 |
900000 |
2023035M.l6 |
3 | L6 Signal | 2023/02/04 11:00 |
900000 |
2023035L.l6 |
4 | L6 Signal | 2023/02/04 10:00 |
900000 |
2023035K.l6 |
5 | L6 Signal | 2023/02/04 09:00 |
900000 |
2023035J.l6 |
6 | L6 Signal | 2023/02/04 08:00 |
900000 |
2023035I.l6 |
7 | L6 Signal | 2023/02/04 07:00 |
900000 |
2023035H.l6 |
8 | L6 Signal | 2023/02/04 06:00 |
900000 |
2023035G.l6 |
9 | L6 Signal | 2023/02/04 05:00 |
900000 |
2023035F.l6 |
10 | L6 Signal | 2023/02/04 04:00 |
900000 |
2023035E.l6 |
11 | L6 Signal | 2023/02/04 03:00 |
900000 |
2023035D.l6 |
12 | L6 Signal | 2023/02/04 02:00 |
900000 |
2023035C.l6 |
13 | L6 Signal | 2023/02/04 01:00 |
900000 |
2023035B.l6 |
14 | L6 Signal | 2023/02/04 00:00 |
900000 |
2023035A.l6 |