Radio Astronomy Software Defined Radio (Rasdr)

131•zeristor•8mo ago

Comments

Alpi•8mo ago

Anybody has experience using rasdr4? What is it capable of?

0xEF•8mo 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

User Manual: https://rasdr.org/release/1.2.4/RASDR-Users-manual-v1.7.5.pd...

SiempreViernes•8mo ago

I feel like 2a just says "It's for radio astronomy", is that what you mean?

0xEF•8mo 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•8mo ago

> Radio astronomy, from my outsider understanding, is not something a newbie just walks in the door and picks up on.

Unless you're Grote Reber.

https://en.wikipedia.org/wiki/Grote_Reber

lotrjohn•8mo ago

Awesome read. Ty for sharing.

>For nearly a decade he was the world's only radio astronomer.

teleforce•8mo ago

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].

[1] RFSoC 4x2 Kit:

https://www.amd.com/en/corporate/university-program/aup-boar...

[2] RFSoC book:

https://www.rfsocbook.com/

westurner•8mo ago

Are there Rydberg antenna SDRs for radio astronomy?

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?

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