Tóm tắt:

The software process GNSS data o Bernese 5.0 provides the result in ITRF-2008 coordinate system. So, it is necessary to transíer the result in ITRF-2008 coordinate system to VN-2000 coordinate system, they are both spatial cartesian coordinate system. To transfer coordinate from thìs system to another system, we must use 7 parameters of coordinate transíormation. These parameters can be separately deíermined for speciíic area based on common points located surround the transtormative area. The paper inừoduces one method to deíine 7 parameters of coordinate transtormation and speciíy them in the region of Vân Đồn, Quảng Ninh.