GPS jamming is emerging as an increasingly prevalent — and troubling — weapon of war

The war with Iran is laying bare the dangers posed to commercial ships and planes by the rise of GPS interference in and around conflict zones.
Future Farming

RTK-GPS: everything you need to know and tips

A textbook example of the usefulness of RTK-GPS: follow-up operations such as planting potatoes and later ridging.
IEEE

Open-Loop Tracking of Rising and Setting GPS Radio-Occultation Signals From an Airborne Platform: Signal Model and Error Analysis

Abstract: Global Positioning System (GPS) radio-occultation (RO) is an atmospheric sounding technique utilizing the received GPS signal through the stratified atmosphere to measure refractivity, which ...