Stuff You Should Know How GPS Works
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Feb 27, 2025 Explore the fascinating world of GPS technology, from its military origins to civilian navigation. Discover how trilateration works, calculating precise locations using clever techniques. The discussion also highlights vulnerabilities of the U.S. reliance on GPS and introduces alternative systems. Enjoy humorous analogies that explain challenges in accuracy, and learn about the cultural implications of GPS spoofing. Plus, a heartfelt tribute to an innovator who simplified complex topics enhances the conversation, blending technology and personal anecdotes.
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GPS Basics
- GPS uses satellites to determine a receiver's location based on radio signals and time calculations.
- This concept was understood before satellites existed, thanks to Dr. Ivan Getting.
KAL 007 Tragedy
- Korean Airlines Flight 007 deviated into Soviet airspace in 1983.
- This incident, where the plane was shot down, influenced the decision to make GPS publicly available.
GPS Technology
- GPS uses microwaves, not radio waves, to pinpoint locations, including altitude.
- Satellites transmit data like time, location, and ID using pseudo-random codes and varied frequencies.
