On 07/30/2010 01:01 PM, Matt Ettus wrote:
>
> With RAID arrays or SSDs, it isn't that hard anymore to sustain 100
> MB/s recording to disk. With 4 and 6 core systems and the i7
> architecture you can get more than 5X the performance of your laptop.
>
> There are a lot of applications using the full 25 MHz of RF bandwidth.
> You just need to pay a lot of attention to efficiency of your program
> and algorithms.
>
> Matt
>
>
For reference, an early version of my IRA radio astronomy receiver was
able to do single-channel
at 16MHz bandwidth, using a Core 2 Extreme 9770 and 8GB of memory and
a USRP1.
The IRA code does a number of things
o compute total power over the entire bandwidth
o compute an FFT with 1Hz resolution (that's a 16 million point FFT)
o do a SETI analysis of the resulting FFT
o do a transient signal analysis of the total power data
o run a narrowband interference filter based on an FFT filter
o run a GUI with lots of bells 'n whistles
--
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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