What is CSRS?
In order to take proper advantage of the Global Positioning System, federal and provincial agencies have established three new layers of control survey networks: a) The continuously operated GPS sites of the Canadian Active Control System (CACS) b) The federal high accuracy Canadian Base Network (CBN) c) The High Precision Networks (HPN’s) These three new layers of control networks not only compliment and densify the existing control networks they were specifically designed for GPS use. All of the layers together form the Canadian Spatial Reference System (CSRS) and supported by the various federal and provincial agencies it has become a very practical and useable tool in today’s digital information society. The important thing to note is that the improvements in network accuracy brought about by the current CSRS version of the NAD83 reference frame are another step towards a consistent system capable of supporting the countries positioning needs today and into the future. This consist
