EVOLUTION Machine Learning for Ionosphere Prediction THE T H E I INDUSTRY’S N D U S T R Y ’ S M MOST O S T T TRUSTED R U S T E D T TECHNICAL E C H N I C A L R RESOURCE E S O U R C E S SINCE I N C E 1 1990 9 9 0 MODERN NORTHSTAR Starlink LEO PNT Across Land, Air, Stratosphere and Arctic Seas + ROBOTIC ROVERS REVOLUTIONIZE MILITARY RUNWAY ASSESSMENT JANUARY/FEBRUARY 2026 | Vol 37 | No 1 GPSWORLD.COM