EEVblog 1547 (Part 2) - PINGing the Voyager 2 Space Probe!
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Published 2023-06-07
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Low noise receivers: safe.nrao.edu/wiki/pub/Main/GalenWatts/Reid_DESCAN…
00:00 - Tour of the Canberra Deep Space Tracking Complex control room.
01:49 - Tracking Schedule
03:35 - Receiver system front end controls for Voyager 2
04:54 - Voyager 2 time reference
06:20 - Subcarrier and Symbols
07:02 - Multi Convolutional Decoder
07:57 - Spectrum Display
08:32 - Antenna controls, beam width and accuracy
10:43 - Signal path display
11:51 - Why doesn't the DSNnow signal level match the actual signal level?
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#NASA #space #Voyager
All Comments (21)
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Fantastic to see the real details of the space comm! Thanks for the video! You'd think 20W from that far away would be a lot more challenging to receive. I'm surprised at how easy it is for them to pick up the signal. Now of course the bit rate is 160 bits per second, but with 10 dB SNR they must have a pretty low bit error rate. What a communications achievement from such an old spacecraft!
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OMG Dave, this is absolutely some of the coolest stuff I have ever seen. I'm not an electronics or RF engineer, just an IT engineer and an amateur radio operator, so I understand all these concepts and all the reasoning and science, and it just blows my mind the figures being discussed. This is an awesome set of videos. Thank you to CDSCC and you for all the access and work required to share this video with the world. I'm just awestruck. Jealous of your access. Cheers mate!
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Aging [74] Canadian man here. I was 29 when the two Voyagers launched, and I've been fascinated by their images of the outer planets for all the intervening years. Truly great voyages of discovery. My humble thanks to all the folks who keep in touch with these wonderful spacecraft for their dedicated service to all humanity. God bless you all...
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A thing of beauty, a joy forever. This antenna is an engineering marvel. The mechanical and RF accuracy is mind blowing!
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How lucky you are to land a tour like this! Thank you so much for sharing with the class!🤓
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Great video! I would love more content like this - reputable nerds going to cool places and just getting things shown, without any dumbing down! Pity there wasn't a RF waterfall display showing the blips received by Voyager 2.
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I want him as my teacher, his voice is so calm and he explains everything so clearly
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So fantastic-- been absolutely obsessed with the Voyager craft for the longest time, gone even so far as to try to dig into the DSNNow data to learn more about what this process looks like, so seeing these insights has been an absolute treat!
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man, that's awesome. you're literally communicating with something outside our solar system, it's going interstellar ! also yeah the antennas are monsters. love that.
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I had the privilege of visiting there a while back, absolutely fascinating place... Richard is a top bloke and very dedicated individual.
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Did a double take when Richard was talking about communicating with MER1 as we lost contact in 2018 unfortunately, then remembered it was a re-upload from 2017. Awesome content regardless, cheers!
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About time you put up part 2, I can only hold my breath for so long. Thanks heaps Dave.
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this is soo intense been following these beautiful space crafts from the start these space probes still operational! from the LATE seventies technology and still going with coms its just truly amazing , I just love this project i hope communication continues till loss of signal (will be a sad day for us followers) thank you for the tour of work center
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NOP is my favorite command of all time.
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As a telecommunications engineer, this is fascinating - thanks!
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Such an amazing experience, thank you Dave!
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Brilliant, Dave. I love the footage of the dish turning too. 👍
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For those curious, the OS seems to be Oracle Solaris 10, or something equivalent.
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Really neat stuff! Such precision in such a large machine! I'll be in my bunk.
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Thank you so much, Dave; I have worked on physical layer modems for 30 years (from the first voiceband modems). I enjoyed this so much. Thank you.
