Topic outline

  • Positional Accuracy Standards for Digital Geospatial Data

    Credits: 4 PDH

    PDH Course Description:

    The purpose of this course is to align mapping accuracy standards with the American Society for Photogrammetry and Remote Sensing (ASPRS) Positional Accuracy Standards for Digital Geospatial Data (ASPRS, 2014), and to identify potential user positional accuracy “needs” (not “wants”) for common applications. Traditionally, aerial mapping data has been acquired and developed according to either National Map Accuracy Standards (NMAS, Bureau of the Budget, 1947) or ASPRS Accuracy Standards for Large-Scale Maps (ASPRS, 1990). Both of these standards pertain to graphic maps with a published scale and contour interval and are generally considered to be obsolete for modern mapping with digital cameras and LiDAR sensors.

    Topics:

    • Map Standards Evolution
    • Accuracy Standards for Photogrammetry and LiDAR Mapping
    • Horizontal/Vertical Accuracy Standards
    • Non-Standard Highest Accuracy
    • Orthoimagery Accuracy Examples
    • Accuracy Testing in Vegetated and Non-Vegetated Terrain
    • LiDAR Relative Accuracy Swath-to-Swath
    • Accuracy Reporting and Statistics
    • Low Confidence Areas
    • Lineage of Map Accuracy Standards
    • Comparison with Prior Standards
    • Check Points, Guidelines
    • Lidar Base Specifications

    To take this course:

    1.) Enroll in Course: Click below to enroll:
    (must be logged into your user account)


    2.) Study: Once enrolled, click below to begin the course:

    Download the Study Guide

    3.) Test: Once you've thoroughly read the course materials, please click below to take the final examination.

    Take the final exam

    4.) Certificate: A passing grade of 70% or higher on the exam, is required to receive the certificate of completion for this PDH course.
         NOTE: After the exam is completed, you will need to return to this page, in order to print (download) the certificate of completion.

    Print the Certificate of Completion

    Intended Audience: This course is intended for professional land surveyors, as well as civil, land development, transportation, hydraulic, and other engineering professionals whose job description may require an intermediate knowledge of positional accuracy standards for digital geospatial data .
    Publication Source: USACE

    Donald Parnell, PE

    • Topic 1