Great stuff, imagine doing radio astronomy with this more capable RFSoC SDR platform with 50% discount for academics at around USD2K [1]. It also has free textbook to go with it [2].
Anybody has experience using rasdr4? What is it capable of?
0xEF · 2d ago
It's a bit niche in the radio hobby, but very cool. That said, it is marketed to a very specific type of radio hobbyist which is probably best explained by looking at the first few sections of the manual, specifically around section 2a if you want to get a better sense of who this is for
I feel like 2a just says "It's for radio astronomy", is that what you mean?
0xEF · 2d ago
Sort of. We have to understand what a SARA project is, how and where DSP would be employed, etc...hence why I mentioned its pretty niche. Radio astronomy, from my outsider understanding, is not something a newbie just walks in the door and picks up on. You have to have some experience with typical SDR use, data collection, etc.
pfdietz · 2d ago
> Radio astronomy, from my outsider understanding, is not something a newbie just walks in the door and picks up on.
> How many astral signals does a receiver need to fix to determine lat/long/altitude given the current time?
> How many astral signals does a receiver need to fix to determine to infer the current time, given geometrically-impossible triangulation and trilateration solutions given the known geometry of the cosmos and the spherical shape of the earth?
[1] RFSoC 4x2 Kit:
https://www.amd.com/en/corporate/university-program/aup-boar...
[2] RFSoC book:
https://www.rfsocbook.com/
User Manual: https://rasdr.org/release/1.2.4/RASDR-Users-manual-v1.7.5.pd...
Unless you're Grote Reber.
https://en.wikipedia.org/wiki/Grote_Reber
>For nearly a decade he was the world's only radio astronomer.
What sensitivity (?) is necessary to navigate by the EMF of stars?
FWIU this is called astronometry? There's probably a better word than "astral"?:
From https://news.ycombinator.com/item?id=44054783 :
> How many astral signals does a receiver need to fix to determine lat/long/altitude given the current time?
> How many astral signals does a receiver need to fix to determine to infer the current time, given geometrically-impossible triangulation and trilateration solutions given the known geometry of the cosmos and the spherical shape of the earth?