ASPRS Positional Accuracy Standards for Digital Geospatial Data – Edition 1, Version 1.0, November 2014
“The objective of the ASPRS Positional Accuracy Standards for Digital Geospatial Data is to replace the existing ASPRS Accuracy Standards for Large-Scale Maps(1990), and the ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data(2004) to better address current technologies.
This standard includes positional accuracy standards for digital orthoimagery, digital planimetric data and digital elevation data. Accuracy classes, based on RMSE values, have been revised and upgraded from the 1990 standard to address the higher accuracies achievable with newer technologies. The standard also includes additional accuracy measures, such as orthoimagery seam lines, aerial triangulation accuracy, lidar relative swath-to-swath accuracy, recommended minimum Nominal Pulse Density (NPD), horizontal accuracy of elevation data, delineation of low confidence areas for vertical data, and the required number and spatial distribution of checkpoints based on project area.” ASPRS Positional Accuracy Standards for Digital GeoSpatial Data, p. 3.
“The objectives of the standard are to provide a common set of terminology and definitions for the documentation of digital geospatial data. The standard establishes the names of data elements and compound elements (groups of data elements) to be used for these purposes, the definitions of these compound elements and data elements, and information about the values that are to be provided for the data elements.” FGDC Content Standard for Digital Geospatial Metadata, p.iv.
For more information on the FGDC CSDGM metadata standard, please visit their webpage.
For an easy to use, graphical guide on creating FGDC metadata, click here.
For information on the RIGIS Minimum Metadata Requirements, click here.
To view the full list of USGS standards, please visit the link above. Below find a few standards that apply to some USGS-based datasets featured on RIGIS.