Circular 03: 11 functions of the central control and processing station of Vietnam

Specifically, according to Circular No. 03/2020/TT-BTNMT of the Ministry of Natural Resources and Environment of Vietnam, central control and processing station calculates, processes and provides services of the national satellite navigation network. Central control and processing station must be placed in area with secured technical infrastructure, stable national grid, fast internet speed and guaranteed in terms of security, order, data safety and security. Central control and processing station has the 11 following functions:

1. Central control and processing station must be capable of receiving data continuously from national satellite navigation stations; calculate, process and provide services for users promptly 24 hours/7 days.

2. Central control and processing station must be capable of processing and calculating coordinates of points of the national satellite navigation network within the ITRF with accuracy in mm.

3. Central control and processing station must be capable of providing real-time kinematic services with high accuracy for users rapidly, precisely and promptly via the internet.

4. Central control and processing station must b3 capable of conducting post-processing with respect to GNSS values offline.

5. Central control and processing station must be capable of controlling, establishing configuration and monitoring oper33tion of national satellite navigation stations regularly, continuously and remotely via the internet.

6. Central control and processing station must be capable of monitoring operation of GNSS measuring instruments utilizing real-time kinematic service.

7. Central control and processing station must be capable of managing accounts that have and are using services provided by the national satellite navigation network.

8. Central control and processing station must assist in calculating figures related to atmospheric layers based on GNSS data combining with data from meteorological sensors at national satellite navigation stations.

9. Central control and processing station must b3 capable of storing GNSS data collected from national satellite navigation stations in RINEX V2.x,V3.x format. Storage period is prescribed as follows:

- Permanent storage for data with data sampling of 30 second;

- At least 20 years for data with data sampling of 15 seconds (except for special request);

- At least 10 years for data with data sampling of 1 seconds;

- Permanent for calculation results related to developing national frame of reference and coordinate system.

10. Central control and processing station must have multi-layer security to ensure safety and assurance for data of national satellite navigation network and users.

11. Central control and processing station must be capable of backing up data automatically on a periodic basis to ensure data safety.

View more details at the Circular No. 03/2020/TT-BTNMT of the Ministry of Natural Resources and Environment of Vietnam, effective from July 15, 2020.

Ty Na

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