3 ms·
> It used a method called vestigial sideband where a precise (1hz) people lot tone was used as a means to allow the stripping away of one half the waveform and
by Implicated 8y ago
> It used a method called vestigial sideband where a precise (1hz) people lot tone was used as a means to allow the stripping away of one half the waveform and then using that tone on the other end to reconstitute the missing side band. It is still used in communications today.
Quoted from Dennis Wingo, co-founder of the Lunar Orbiter Image Recovery Project, who has been commenting on the linked article.
- biggieshellz 8y ago"people lot tone" -> "pilot tone", I think.
- deleted 8y ago[deleted]
- acqq 8y agoThe description appears to be something more similar to the "reduced-carrier single-sideband." There's long history behind the variants of sideband modulation: https://en.wikipedia.org/wiki/Single-sideband_modulation https://en.wikipedia.org/wiki/Single-sideband_modulation In the same article, vestigal sideband is reported as used around that time for modems: https://en.wikipedia.org/wiki/Single-sideband_modulation#Vestigial_sideband_(VSB) https://en.wikipedia.org/wiki/Single-sideband_modulation#Ves...