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Using ground relays with Starlink

Mark Handley · explainer · Watch on YouTube

Networking & internet infrastructureSpace exploration & spaceflight

What it is

Mark Handley of UCL explains, with simulation visualizations, how early Starlink satellites without inter-satellite links could still give low-latency wide-area communication by hopping via ground relays. He shows it can beat fibre on many long paths.

Why Hacker News recommends it

Cited in Starlink latency debates as a clear visual analysis showing sub-100ms latency is plausible even without inter-satellite links.

  • 5 people recommended it
  • 2 different months
  • 2 strong recommendations
  • first 2020, last 2020

What HN commenters said

  1. “as Mark Handley has elegantly pointed out in his incredible video”

    Shows low latency without inter-satellite links

    sneak, 2020-06 · Strong recommendation · in “Realtime Starlink Satellite Map”

  2. “I would highly recommend the video linked from this article”

    Detailed simulation of routing between satellites and ground stations

    thamer, 2020-10 · Strong recommendation · in “Starlink Packet Routing”

  3. “This [1] is a good youtube explanation of how a hybrid between Starlink and ground stations could still improve connectivity”

    Good explanation of hybrid Starlink and ground station connectivity

    gadders, 2020-06 · Recommendation · in “SpaceX Starlink is now its own ASN and present at the Seattle Internet Exchange”

  4. “If you want a really great visualization and latency estimates for starlink check out the models and videos this guy came up with”

    Great visualization and latency estimates for Starlink

    cagenut, 2020-06 · Recommendation · in “FCC has “serious doubts” that SpaceX can deliver latencies under 100ms”

  5. “This YouTube video (along with others on this channel) does a good job of explaining how this could work.”

    Explains how relays could work, including boats as repeaters

    sacred_numbers, 2020-06 · Recommendation · in “Realtime Starlink Satellite Map”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: starlink, satellite networking, latency, ground relays, simulation

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