How GPS Works, And How It Got Better Than The Designers Ever Imagined
Why Hacker News recommends it
Recommended as a solid history and explanation of GPS, especially when GPS outages or accuracy come up.
What it is
Scott Manley covers how GPS works and how civilian accuracy went from a planned 100 meters to about one meter. He explains the technology and the removal of restrictions that made this possible.
Recommended by 3 HN commenters across 3 different months, 2023 to 2025.
What Hacker News said
Strong rec rezonant · 2024-02 · on “Cellular outage in U.S. hits AT&T, T-Mobile and Verizon users”
The sibling response here covers all of the points I would say. Scott Manley has a nice video covering the history of GPS and how it works, well worth a watch [this video] It's not as simple as you think.
Recommends franky47 · 2023-09 · on “Official U.S. government information about the Global Positioning System (GPS)”
For a video form of this topic, Scott Manley did a review of how GPS actually performed better than initially designed: [this video]
Recommends nancyminusone · 2025-06 · on “Show HN: I Built a Site That Curates Weird YouTube Rabbit Holes Daily”
Don't mean to be rude, but your deep dives could be deeper. I clicked on 'How GPS works' expecting to see a certain Scott Manley video [0] there. Instead, it's 10 shorts I'd put firmly at the 'like n subscribe' end of the scale. Think I'll stick to my own curated list of creators for now. [0] [this video]