Hi Clifford and All,
Thanks for your responses. After looking into our design further, it looks
like we are moving toward a somewhat narrower bandwidth, which makes it
compatible with the Skarab ADC. Since this is an entirely new platform for
me, I'll need some help visualizing the architecture
I can think of three ways to operate non-2^N antennas...
1) "fake" F-engine inputs: This is what MeerKAT does right now when it has
fewer than 2^N antennas. We just multicast copies of redundant the data into
unused F-engine inputs. It doesn't save you any hardware and is wasteful,
because yo
Hi Jason,
Thanks for the quick estimate. If we are targeting 10 antennas, can't the
correlator be made to work with only 10 F engines? The packets of the
missing F engines would just not arrive at the X-engine, and hence the
associated baselines would be zeroed or just ignored. We might also de
Hi Dale
The CASPER packetised correlator (that PAPER/HERA/KAT-7/MeerKAT etc are all
using) would scale simply to your needs. You could easily build it out of
ROACH2s or SKARABs at your scales. It would be a bit more expensive than the
SWARM-type solution, in that it'd need additional hardware b
hi dale,
i'd be happy to talk to you on the phone about pros and cons of different
options if you'd like.
jack also told me a bit about your plans - he'd be good at providiing
advise on the different options..
dan
510-418-0546
On Tue, Nov 7, 2017 at 9:29 AM, Gary, Dale E. wrote:
> Dear Jonat
Dear Jonathan (and the rest of the CASPER list, in case anyone has
additional comments),
I am looking into a new project that would require processing around 2 GHz
of bandwidth on of-order 10 (but more than 8) dual-polarization antennas.
Our science case calls for at least 4096 frequency channels.
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