The Ecogemorphology & Topographic Analysis Lab (ET-AL) and the RSGIS Laboratory developed this ArcGIS Add-in for the transformation and projection of CHaMP field survey data (Bouwes et al. 2011) into real world coordinates given hand-held GPS coordinates from just three benchmarks. The CTT will work with any unprojected data in a file geodatabase, and gives you multiple ways to do an afine transformation based on a simple shift and rotation. Although other transformation tools exist in ArcGIS, there is not a simple sequence of geoprocessing tools, which allow you to transform vector data in a manner that preserves the high relative accuracy of a total station survey. See Wheaton et al. (2012) and the ReadMe page for more background.
Wheaton JM, Garrard C, Volk C, Whitehead K and Bouwes N. 2012. A Simple, Interactive GIS Tool for Transforming Assumed Total Station Surveys to Real World Coordinates - The CHaMP Transformation Tool. Submitted to Computers & Geosciences.42: 28-36. DOI: 10.1016/j.cageo.2012.02.003.
Help & Tutorial Info.
Support Contact Info.
This tool is useful for transforming smaller point clouds collected in assumed local coordinate systems and transforming to a real world coordinate system using approximate GPS coordinates. It preserves the relative accuracy of the original datasets.