Hidden Point Bar Method for High-Precision Industrial Surveys

Abstract

Precise three-dimensional positioning by the hidden point bar method is investigated. The investigation includes development of both closed form and least squares solutions, as well as calibration of the hidden point bar. The method is applied in the field at the University of Calgary Central Heating and Cooling Plant. In this application, known movements are introduced and then recovered using the hidden point bar method. The differences between known and recovered movements are