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Publication Details
| Published Date: | |
|---|---|
| Authors: | Chris Blackburn, Daniel Sawyer, Craig Shakarji |
| Company: | CMSC |
| Print Format: | Technical Paper |
| Citation: | Chris Blackburn, Daniel Sawyer, Craig Shakarji, "Common-Path Method for Laser Tracker Ranging Calibration," The Journal of the CMSC, Vol. 9, No. 1, Spring 2014 |
Abstract
In this article, we present an alternative to the back-to-back method of testing laser tracker ranging systems. Our approach uses a common air path for both the measurement and reference laser beams. This technique allows for more accurate determination of the reference length by greatly reducing the dead path for the reference length. Accuracy is also improved because of the use of a single optic. This eliminates error sources due to offsets between the front- and rear-facing optics used in the back-to-back method. Furthermore, the technique simplifies the execution of the ranging test by allowing for a novel alignment procedure that is also presented.
