A New Modeling Approach for a Priori Uncertainties of Laser Tracker Angle Measurements
- Michigan State University, East Lansing, MI (United States)
Methods for modeling the uncertainty in laser tracker angle measurements vary within the metrology industry, leading to confusion and questionable stochastic modeling for survey network adjustments and error propagation analysis. Interpreting the published laser tracker manufacturer performance specifications to determine an a priori sigma value for weighting azimuth and zenith angle measurements can be confusing and has led to differing implementations. Furthermore, this paper proposes a unique way to model survey network a priori laser tracker angular uncertainties based on laser tracker manufacturersβ published maximum permissible error (MPE) values referenced to current standards for weighting survey network measurements. This paperβs proposed model takes into account the disparate effects that pointing errors, target centering errors, and leveling errors have on azimuth and zenith angular uncertainties for measurements with steep sightings and at near ranges.
- Research Organization:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0000661
- OSTI ID:
- 1986434
- Journal Information:
- Journal of Surveying Engineering, Vol. 149, Issue 4; ISSN 0733-9453
- Publisher:
- American Society of Civil Engineers (ASCE)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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