Photogrammetric and other network applications

Learning goal

Your goals in this part of the project are:

  1. To look at and describe applications of geodetic networks, including a first “shallow dive” look at aerial photogrammetry
  2. To create a study guide / study notes that will help your peers understand the same

Guidance questions

I provide the following guidance questions:

1. Name, describe, and provide examples of at least 10 different areas of application / ways in which geodetic networks are applied in practice. One of these can be photogrammetry, which will also be treated below.

2. Name and refer to at least three different software packages used for carrying out geodetic network adjustments of the kinds we have studied in this course, at least one of which was built / is sold in Calgary.

3. In aerial photogrammetry:

3a. Briefly, what is aerial photogrammetry?

3b. And the concept of aerial triangulation? In the big picture, why do we want to do it?

3c. Describe and provide a sketch or figure that shows the difference between individual images, strips, and blocks.

3d. What is a tie point? And what kind of image overlap do we look for in each “direction”? Include these concepts in your sketch or figure, or create another one.

3e. What does absolute orientation mean? How many and what are the key parameters being estimated?

3f. What is the difference between an independent model adjustment, and a bundle (or bundle-block) adjustment? Which is preferred and why?

3g. What role do ground-based control points and networks play in a photogrammetric adjustment? (No problem if you’ve already addressed this above – just summarize here.)

Resources

I will provide some key resources in addition to the resources you can find online.


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The following schedules are for Alex’s in-class students: