RTK/PPK vs GPCs: Which One Do You Need?

Hosted by Eric Andelin CP, Senior Workflow Specialist with guest speaker David Alamillo, Photogrammetry Specialist. Drones with precise positioning such as RTK/PPK are becoming common with those using them for mapping purposes. This leads to the question: how precise does positioning need to be to create accurate maps from photogrammetry? With options such as RTK and PPK, image location can be determined within centimeters. So, do these actually help to produce better maps? And how do you verify the accuracy of maps produced using this technology? Is there ever a time where GCP’s are not necessary? And can maps made without RTK/PPK enabled systems be as accurate as those with? Join David and I as we discuss these options and go over the processing workflows for each. Specifically, attendees will learn the following: ● What is the difference between RTK and PPK ● How RTK/PPK affects aerial triangulation ● When are GCPs needed ● How accuracy is validated Chapters. 00:00 - Intro 00:45 - Topics 03:30 - What is the difference between RTK and PPK 16:05 - How RTK/PPK affects aerial triangulation 22:50 - When are GCPs needed 26:25 - How accuracy is validated