Earlier quoted context omitted.
Why would we expect faster than fibre?
Also, as pointed out elsewhere, the number of hops is the biggest contributor to latency.
[deleted]
Starlink's laser system is beaming 42 petabytes of data per day
61–70 of 469 posts
Re: Starlink's laser system is beaming 42 petabytes of data per day
#62Earlier quoted context omitted.
Is this a serious question? You think SpaceX developed the industry-leading orbital rocket, launched hundreds of times to deliver thousands of in-house developed satellites utilizing homegrown, novel argon gas ion thrusters, to develop a global satellite internet system using inter-satellite laser links, their own in-house developed, incredibly inexpensive phased array antenna system, and everything else, and they fo…
This is HN. Everyone here is more intelligent, capable and aware than people who are industry professionals in their specific field.
I guess the fact that musk says mean things on twitter has to discredit his massive dominance in three industries.
Re: Starlink's laser system is beaming 42 petabytes of data per day
#63Earlier quoted context omitted.
Take a look at the slides from the presentation, I think the geometry clearly shows cross-plane links in the mesh. Having worked on these types of systems, I've had more difficulty with the lookahead angles (rx from where the target was, tx to where it will be due to speed of light) than the tracking -- fine tracking performance was required for all modes, and it largely became a GNC and acquisition time issue (since…
GNC?
Guidance navigation and/or control
Re: Starlink's laser system is beaming 42 petabytes of data per day
#64Earlier quoted context omitted.
Take a look at the slides from the presentation, I think the geometry clearly shows cross-plane links in the mesh. Having worked on these types of systems, I've had more difficulty with the lookahead angles (rx from where the target was, tx to where it will be due to speed of light) than the tracking -- fine tracking performance was required for all modes, and it largely became a GNC and acquisition time issue (since…
GNC?
Guidance, navigation and control
Re: Starlink's laser system is beaming 42 petabytes of data per day
#65I have absolutely no idea how that number relates to any comparable operation. Can anyone add a banana for scale?
Re: Starlink's laser system is beaming 42 petabytes of data per day
#66Global internet traffic is estimated to be 3 yottabytes per day. So Starlink is now carrying one of out every 77 million parts of worldwide traffic. Wow, that's small. EDIT: there's some confusion information out there. With a more conservative estimate of 150.7 exabytes per month, Starlink gets 1 part of 119, which is more impressive.
The quoted number is only for inter-satellite laser links, not for other methods of information transmission.
Most of the traffic is probably just bounced off the satellite down to the nearby ground station still.
Re: Starlink's laser system is beaming 42 petabytes of data per day
#67I have absolutely no idea how that number relates to any comparable operation. Can anyone add a banana for scale?
10 minutes of 4k video is ~30GB.
Re: Starlink's laser system is beaming 42 petabytes of data per day
#68[flagged]
Is this a serious question? You think SpaceX developed the industry-leading orbital rocket, launched hundreds of times to deliver thousands of in-house developed satellites utilizing homegrown, novel argon gas ion thrusters, to develop a global satellite internet system using inter-satellite laser links, their own in-house developed, incredibly inexpensive phased array antenna system, and everything else, and they fo…
OP was likely referring to this[1] which did in fact have lines like "tesla isn't encrypting their firmware and it's really easy to glean information from the vpn with a packet cap because nothing inside the vpn (was) encrypted".
So yeah, it's possible they did.
1. (best version I can find sorry) https://www.reddit.com/r/EnoughMuskSpam/comments/99sbwa/form...
Re: Starlink's laser system is beaming 42 petabytes of data per day
#69I have absolutely no idea how that number relates to any comparable operation. Can anyone add a banana for scale?
10 minutes of 4k video is ~30GB.
Knowing the size of a video file is exactly not the information, that would help me put this number in a meaningful perspective with any comparable operation.
How do I think of 42 petabytes in terms of an ISP? Is that a lot? How does it compare to other satellite providers? How does it compare to 4G capacities? Is this a small country worth of traffic or just any ol' data center? I have no intuition about traffic at this scale.
Re: Starlink's laser system is beaming 42 petabytes of data per day
#70I have absolutely no idea how that number relates to any comparable operation. Can anyone add a banana for scale?
If you've got a laptop with a terrabyte drive, it would be 42,000 full laptops worth of data.