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Both of Total Station and GPS have advantages and disadvantages; Although using GPS save efforts and time more than Total station with high accuracy but we can't use it in the forests and high rise buildi ,but we have to use total station.
So I think we have to choose according to our project site.
When you are using a Total Station there is a sigh requirement between total station and Prism reflector. On the other hand ,you can use GPS anywhere in the globe with high accuracy and you will be able to control a point without any line of sigh requirement.
gps is used for actual position for earth and total station works on any cordinate point that is left by gps and virtual
as per my humble experience,
total station is used while eating falafel sandwich, while gps is used while eating shawerma sandwich.
accuracy is related to type and brand of topping and sauce used for both falafel and shawerma.
caution, working on total station is causing stomach gases, make sure nobody is near by.
1] Discuss the advantages of GPS with compared to electronic distance measurement.