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...
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This fact sheet discusses the history of the survey control in Alberta including the development of the Alberta Survey Control (ASC) network, surveying infrastructure, the...
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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...
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In Alberta there are two official vertical datums; The Canadian Geodetic Vertical Datum of 2013 (CGVD2013) and the Canadian Geodetic Vertical Datum of 1928 (CGVD28). This fact...
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This Fact Sheet presents a brief overview of provincial readjustments of the Alberta Survey Control network as well as national (cross-Canada) readjustments that define the...
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Alberta Survey Control Marker (ASCM) index maps are a graphical representation of the provincial spatial referencing system. The index maps display the location of integrated...
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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...
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This fact sheet discusses the 3TM and UTM mapping planes and their representation on Alberta Survey Control Marker (ASCM) ID cards and for plans of survey.
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Alberta Survey Control Marker (ASCM) data is available for three reference frames: The North American Datum of 1927 (NAD27), the original derivation of the North American Datum...
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This document describes the contents of an excel format spreadsheet for 32,971 published ASCMs. The coordinate and elevation information for these ASCMs are based on the...
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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...
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The Canadian Spatial Reference System (CSRS) derivation of the North American Datum 1983 (NAD83) was first implemented for Alberta Survey Control Markers (ASCMs) in 1999. Since...
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