Before revision: Network of reference stations used by Austrian Positioning Service (APOS) A geodetic control network is a network, often of triangles, which are measured precisely by techniques of control surveying, such as terrestrial surveying or satellite geodesy.
After revision: Network of reference stations used by Austrian Positioning Service (APOS) A geodetic control network is a network, often of triangles, that are measured precisely by techniques of control surveying, such as terrestrial surveying or satellite geodesy.