Vietnam: Survey and selection of location of national satellite navigation station

- Criteria regarding basic information, including information on natural geography, characteristics, climate, traffic, socio-economic conditions, local security, etc.;

- Criteria regarding environment and scenery including information on whether surroundings of the estimation station location influence satellite signal receipt quality;

- Criteria regarding infrastructure including available information on local infrastructure as well as other information serving installation and placement of equipment;

- Criteria regarding GNSS satellite: collect data directly by GNSS reception apparatus in at least 24 hours at estimated calibrating gauge with specifications established on the reception apparatus similar to official operation to analyze and assess satellite signal receipt quality on monitored frequency; assess interference, obstruction and reduction of signal of each satellite in a day; assess impact of other radio signals in the area;

- Criteria regarding measurement and survey of current conditions: directly measure the premises of the areas, pay special attention to objects with great height that potentially affects ability to receive signals of the reception apparatus;

- Criteria regarding national coordinate and national altitude, including examining presence and usability of coordinates, altitude and gravity in the areas to serve measurement and connection;

- Criteria regarding geological information: provide general assessment regarding geological, geomorphologic and pedological characters in construction location for base section ò the continuous operating reference stations.

Note: Details for each criteria specified above are specified in Annex 2 of this Circular. At the end of the survey, entities conducting the survey must produce survey final reports with confirmation of participating parties.

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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