In this lesson, we will also continue the discussion of elevation data in more depth, including many additional forms and formats for the representation of terrain as a base map layer. Photogrammetry was historically the primary approach to elevation data creation; in recent years, technologies such as lidar and IFSAR have surpassed photogrammetric methods for large area collection. We won't have time to discuss the design and operation of those technologies (they are covered in other courses in the remote sensing curriculum); but, we will discuss the elevation products that are generated from all remote sensing technologies.
We will also continue the discussion of specifications and standards; in this case, focusing on those that drive elevation data development at the federal, state, and county level in the United States. This, and the discussion of orthophoto standards, will set the stage for a discussion of data validation, accuracy assessment, and quality assurance/quality control methods which are a critical part of the overall base mapping mission.
At the end of this lesson, you will be able to:
If you have any questions now or at any point during this week, please feel free to post them to the Lesson 4 Questions and Comments Discussion Forum in Canvas.