How has the GDA datum been defined and realised ("on the ground")?
What technology was used?
List some of the problems likely to be encountered when trying to
combine a GPS survey with external control information.
Give some reasons why an upgrade or redefinition of a geodetic datum
may be necessary.
Describe the process of defining the GDA.
Discuss some trends in GPS hardware and software.
Discuss some trends in GPS infrastructure and datum issues.
Discuss some trends in GPS positioning applications.
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