Government of Alberta

In order to facilitate user needs working with coordinate data referenced to different reference frames, Geodetic Control has developed transformation grids to allow users to accurately transform 2-dimensional coordinate data from one reference frame to another. This fact sheet reviews the two...

Geodetic Control publishes coordinate data with respect the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83). The NAD83 coordinate data is further broken down into coordinate data relative to the original implementation of NAD83 (NAD83(Original)) and the Canadian...

This document describes the transformation grids available in Alberta to transform coordinate data from one geometric reference frame to another and vice-versa as well as data analysis results for each transformation grid. This document supersedes the README.doc file produced by the Geodetic...

The Canadian Base Network (CBN) is a network of forced-centring pillars, which serve as the ground segment of monumented control of the Canadian Spatial Referencing System (CSRS). This network provides the link between the existing spatial referencing framework within the province of Alberta and...