Investigations of Angle Bias Errors in Laser Velocimetry Measurements

摘要

IN 1987, a panel of recognized experts in the field of laser velocimetry was assembled and tasked with addressing problems of statistical bias errors in laser velocimetry (LV). One source of statistical bias addressed by the panel was fringe bias or, more appropriately, angle bias. Angle bias had been studied theoretically, and limited experimental data supporting the theory had been published. Although the panel members had confidence that the theoretical predictions were accurate, additional detailed experiments were recommended to confirm the quantitative accuracy of the theory. Following this recommendation, angle bias experiments have been conducted at West Virginia University and will be discussed in this paper.