For additional and more comprehensive definitions of the terms above, reference is made to the Glossary of Mapping Sciences. 6. Symbols, abbreviated terms, and notations ACCr the horizontal (radial) accuracy at the 95% confidence level – ACCz the vertical linear accuracy at the 95% confidence level – ASPRS American Society for Photogrammetry and Remote Sensing – CVA Consolidated Vertical Accuracy – FVA Fundamental Vertical Accuracy – GSD Ground Sample Distance – GNSS - Global Navigation Satellite System GPS Global Positioning System – INS Inertial Navigation System – NGPS Nominal Ground Point Spacing NPD Nominal Pulse Density NPS Nominal Pulse Spacing NSSDA National Standard for Spatial Data Accuracy NVA Non-vegetated Vertical Accuracy QA/QC Quality Assurance and Quality Control – the horizontal linear RMSE in the radial direction that includes both x- and y-coordinate errors. the horizontal linear RMSE in the X direction (Easting) RMSEy the horizontal linear RMSE in the Y direction (Northing) RMSEz the vertical linear RMSE in the Z direction (Elevation) RMSE Root Mean Square Error root-mean-square-difference in elevation (z) SVA Supplemental Vertical Accuracy – TIN Triangulated Irregular Network – VVA Vegetated Vertical Accuracy sample mean error, for x
For additional and more comprehensive definitions of the terms above, reference is made to the Glossary of Mapping Sciences. 6. Symbols, abbreviated terms, and notations ACCr – the horizontal (radial) accuracy at the 95% confidence level ACCz – the vertical linear accuracy at the 95% confidence level ASPRS – American Society for Photogrammetry and Remote Sensing CVA – Consolidated Vertical Accuracy FVA – Fundamental Vertical Accuracy GSD – Ground Sample Distance GNSS - Global Navigation Satellite System GPS – Global Positioning System INS – Inertial Navigation System NGPS Nominal Ground Point Spacing NPD Nominal Pulse Density NPS Nominal Pulse Spacing NSSDA National Standard for Spatial Data Accuracy NVA Non-vegetated Vertical Accuracy QA/QC – Quality Assurance and Quality Control the horizontal linear RMSE in the radial direction that includes both x- and y-coordinate errors. the horizontal linear RMSE in the X direction (Easting) RMSEy the horizontal linear RMSE in the Y direction (Northing) RMSEz the vertical linear RMSE in the Z direction (Elevation) RMSE Root Mean Square Error root-mean-square-difference in elevation (z) SVA – Supplemental Vertical Accuracy TIN – Triangulated Irregular Network VVA Vegetated Vertical Accuracy sample mean error, for x
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