Previous Week 120: PLSS Double Proportioning Calculations for those studying for the PS/FS & CST Exams Next Week 118: Artificial Intelligence in Geomatics Week 119: GNSS / GPS Basics 1 min read7 months ago Watch LaterRemove Cinema Mode FacebookXLinkedInEmail Steven J. Martin, PLS, presents this week on GNSS / GPS Basics. Latest Posts Week 132: Drone Survey Accuracy & How to Prove It 1 week ago Week 131: Datums & Reference Frames 3 weeks ago Week 130: Getting organized for the FS & CST exams 1 month ago