Hi all,
I have an interest in radioastronomy. I plan to make simple beamforming
phase array (primary with 4 and later with 8 antennas) with USRP (later
with 2) and GNU Radio. I am inspired by LOFAR radiotelescope.
Now I collect all available information about using GNU Radio and USRP
for it.
Martin, could you send more information about your solution, project
(url etc.) ?
Thanks,
Pavol
PS: I haven't USRP yet. However, I am buying my first USRP, right now :)
Martin Dvh wrote:
Carles Fernandez wrote:
How well are they synchronized?
They run off the same 64 MHz clock, so are synchronised.
I have even used two connected USRPs running of the same clock (one is master
and exports its clock to the slave USRP)
(You use an additional flatcable between the USRPS and an align software block
in gnuradio which aligns the samples)
This gives you 8 ADCs. This means 8 real channels or 4 complex channels.
I used this setup for a phase array with 4 DBSRX daughterboards.
(DBSX daughterboards use complex sampling so they need two ADCs)
DBSRX boards also support the GPS frequencies and are a lot cheaper, so you
might want to consider them.
But they are receive only.
You can even go higher and connect 4, 8 or 16 USRPS.
_______________________________________________
Discuss-gnuradio mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
