7 ms·

I would have thought that being built in the 70s, data transmission from the voyagers would still be analog, but apparently not. According to the press kit for

I would have thought that being built in the 70s, data transmission from the voyagers would still be analog, but apparently not. According to the press kit for the voyager[1] missions, all data was sent digital and there's details on what was sent at what data rate. So it seems like they must have previously just sampled the data differently. Maybe specifically because they weren't looking for this particular kind of phenomena, so a higher sample rate wasn't seen as necessary? [1] https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770079866.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/197700...

drmpeg 7y ago
Even satellites built in 1967 were digital. https://destevez.net/2020/03/decoding-les-5/ https://destevez.net/2020/03/decoding-les-5/
scottlocklin 7y ago
Voyager used one of the most beautiful error correcting codes; the Golay codes. https://en.wikipedia.org/wiki/Binary_Golay_code https://en.wikipedia.org/wiki/Binary_Golay_code Also best 1 page paper ever (<tm> Elwyn Berlekamp): https://www.lama.univ-savoie.fr/pagesmembres/hyvernat/Enseignement/1718/info607/TP-Golay/golay_paper.pdf https://www.lama.univ-savoie.fr/pagesmembres/hyvernat/Enseig...