An innovative technique for rapid and accurate collection of preliminary survey and mapping in pipeline route selection has been developed by Aerotech L.L.C. and implemented by Lakehead Pipe Line Company, Limited Partnership. The technique involves GPS referenced digital imagery and laser scanned topographical data collected on an aerial platform. Accuracy of laser scanned topographical features up to ± 10 cm absolute ± 2 cm relative can be easily achieved. The data is processed and formatted for AutoCAD and GIS applications such as ArcView.

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