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feld (feld@friedcheese.us)'s status on Saturday, 12-Apr-2025 15:59:27 JST feld
in reply to
@hyc @froge @rayckeith What would it take to convince the tractor manufacturers to integrate it though?

In conversation about a month ago from friedcheese.us permalink
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  Howard Chu @ Symas (hyc@mastodon.social)'s status on Saturday, 12-Apr-2025 15:59:28 JST Howard Chu @ Symas
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  - Haderach C. Kwisatch
  - CyberFrog
  @froge @rayckeith in any case, it seems like not much trouble to deploy, and certainly worth doing. https://mastodon.social/@hyc/112430694224002097
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    Howard Chu @ Symas (@hyc@mastodon.social)
    
    from Howard Chu @ Symas
    
    @Eka_FOOF_A@spacey.space @FlashMobOfOne@mastodon.art @jasonkoebler that's just idiotic. Farmers and tractors don't need *Global* positioning systems. They just need a few local marker towers that define the boundaries of their fields. A set of radio transmitters at the corners of their property could be tuned to whatever power output needed to cover their land, and it would take a cataclysmic celestial event to interfere with the signal.
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  Howard Chu @ Symas (hyc@mastodon.social)'s status on Saturday, 12-Apr-2025 15:59:30 JST Howard Chu @ Symas
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  - Haderach C. Kwisatch
  @rayckeith presumably satnavs also work for sea and aircraft, while this would only work for ground. No?
  
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  CyberFrog (froge@social.glitched.systems)'s status on Saturday, 12-Apr-2025 15:59:30 JST CyberFrog
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  - Howard Chu @ Symas
  - Haderach C. Kwisatch
  @hyc@mastodon.social @rayckeith@techhub.social it's likely to fail at sea, but most aircraft can easily receive ground based signals (even phones on airplanes over domestic airspace get 4g signal sometimes)
  
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  Haderach C. Kwisatch (rayckeith@techhub.social)'s status on Saturday, 12-Apr-2025 15:59:31 JST Haderach C. Kwisatch
  
  "GPS and similar satellite navigation systems revolutionized how you keep track of where you are and what time it is. However, it isn’t without its problems. For one, it generally doesn’t work very well indoors or in certain geographic or weather scenarios. It can be spoofed. Presumably, a real or virtual attack could take the whole system down.
  "Addressing these problems is a new system called Broadcast Positioning System (BPS). It uses upgraded ATSC 3.0 digital TV transmitters to send exact time information from commercial broadcast stations. With one signal, you can tell what time it is within 100 ns 95% of the time. If you can hear four towers, you can not only tell the time, but also estimate your position within about 100 m."
  https://hackaday.com/2025/04/11/gps-broken-try-tv/
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    GPS Broken? Try TV!
    
    from Al Williams
    
    GPS and similar satellite navigation systems revolutionized how you keep track of where you are and what time it is. However, it isn’t without its problems. For one, it generally doesn’…

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