I'm trying to scope the hardware required for SERENDIP-type science
piggy-backing on DSN down-link (passive, no transmitter) tracks.
As a baseline, I'm assuming one ROACH per antenna per activity.
Possible activities would be:
* searching for pulsars and transient pulses
* SETI
*
hi tom,
there's a lot of current work in the areas you asked about:
terry filiba recently ported the ibob based pulsar instrumentation to roach,
(peter mcmahon and she developed this for parkes pulsar work).
jonathan kocz and mathew bailes are working on roach porting as well.
see peter's
Hi Tom,
One of the main bandwidth limitations in pulsar processing is the length of
the dedispersion chirp function, which goes down quadratically with
increasing frequency. Generally people split the band up into several ~4 MHz
channels and coherently dedisperse each one separately. Each of these
Dan Werthimer wrote:
each GPU can handle 100 to 200 MHz dual pol depending on whether
you are doing coherent dedispersion (timing), or spectroscopy
(searching).
matthew and jonathan are the experts at reading data from ibob/roach
and
using CPU cluster to do pulsar/transient search.
john
On Fri, 29 Jan 2010, Tom Kuiper wrote:
Dan Werthimer wrote:
each GPU can handle 100 to 200 MHz dual pol depending on whether
you are doing coherent dedispersion (timing), or spectroscopy (searching).
matthew and jonathan are the experts at reading data from ibob/roach and
using CPU
On Friday 29 January 2010 10:18:42 pm John Ford wrote:
Dan Werthimer wrote:
each GPU can handle 100 to 200 MHz dual pol depending on whether
you are doing coherent dedispersion (timing), or spectroscopy
(searching).
matthew and jonathan are the experts at reading data from
ibob/roach
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