Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

I dont get it, How does latency affect bandwidth here?




Because we're not stationary, and nor is the moon. Latency means greater dispersion, and lower successful return rates.

Latency itself doesn't mean squat. Throw a pair of trancievers into deep space and no relative motion and all bitrate limiting factors (dispersion, multipath, doppler shift- I'm sure there's more) disappear besides SNR/inverse square and retransmission.

Going beyond intuition- secondary reasoning says since GSO bandwidth & bitrate is acceptable for TV and sat phones by the hundred.

Tercheriary is we have/had a few hundred bps from Voyager II and that's a might bit further out than the moon, and it was called out that using an 80meter dish it could be pushed to a little over 1kbps- which means at some point inverse square becomes the only non-neglegiable factor.

So please, explain with something besides repeatedly saying "latency." Even if I'm wrong, they're strong enough counters to deserve more than a single word.


... I'd love to see, this particular project, "throw a pair" of tranceivers into deep space.



Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: