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. 2013 May 31;13(6):7224–7249. doi: 10.3390/s130607224

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© 2013 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — Residual plots of systematic errors in the horizontal angle observations (θ) from point-based self-calibration for hybrid-type scanners: B₁ is the horizontal direction scale factor error, B₂ + B₃ are the horizontal circle eccentricity, B₄ + B₅ are the non-orthogonality of horizontal encoder and vertical axis, B₆ is the horizontal collimation axis error, B₇ is the trunnion axis error, B₈ is the horizontal eccentricity of collimation axis, and B₉ + B₁₀ are the trunnion axis wobble.