GPS rules everything. A new satellite launch keeps a big upgrade rolling - CNET
Do you know how GPS works? - Bareways
Global positioning system is our best navigation network, but this may change in five years - ABC News
What on Earth is the Global Positioning System? > U.S. Department of Defense > Story
GPS: A $1.4 Trillion Economic Engine | RTI
Satellites like Elon Musl's Starlink are the next front in space war
Global Positioning System - Wikipedia
A Condensed History of the Global Positioning System (GPS)
What Happens If GPS Fails? - The Atlantic
War in Space May Be Closer Than Ever - Scientific American
Brief History of GPS | The Aerospace Corporation
China and Russia Could Cripple the US With a Space Attack, but the US Is Pushing Back
Army ponders satellite partners for 'Lonestar' GPS interference warning system - Breaking Defense
How to fight a war in space (and get away with it) | MIT Technology Review
Shot-Down Over Ukraine, Russian Su-34 Fighter Jet 'Shockingly' Found With ' GPS Taped To Its Dashboard'
Six ways satellites make the world a better place
Air Force: GPS Satellites Vulnerable to Attack
How would a military force go about shooting down or otherwise disabling navigation satellites (GPS, Glonass, Beidou, etc.) in the event of a war? - Quora
GPS Isn't Very Secure. Here's Why We Need A Backup | WIRED
GPS World - The Business and Technology of Global Navigation and Positioning
India's Satellite-Shoot-Down Test Should Raise Fears About Space Junk
Lesson 1: The GPS Signal
Why the Military Released GPS to the Public
Anti-satellite weapons: History, types and purpose | Space
Putin is holding GPS hostage. Here's how to get it back.
Everything You Need to Know About GPS Tracking – Tracki
India joined exclusive club with anti-satellite missile test: Here's what it means for the world
GPS Satellites | Lockheed Martin
