Updated: March 2021
Problem
In the
Position Accuracy in Mountainous Terrain tutorial, you’re asked to load a GPS Prediction Support File (PSF). The instructions say to go to the GPS Satellite Performance Webpage, which works:
https://navigationservices.agi.com/GNSSWeb/PAFPSFViewer.aspx.
At the top of the page, you’re supposed to select the link ftp.agi.com/pub/Catalog/PSF and navigate to a file. This link and the other link, ftp.agi.com/pub/Catalog/PAF, are currently not functioning. When you load the link in Chrome, you get a “Not Found / The requested URL /pub/Catalog/PSF was not found on this server” message.
Our Web Team is aware of this and is working to fix the issue.
Solution
The file that you are supposed to download is attached to this FAQ. Please use this one so that you can continue in the tutorial and the certification.
