hi Guillermo, here's some info on a snap based fast read out spectrometer for pulsar and frb: https://casper.berkeley.edu/wiki/Crab_Giant_Pulse_Project
it's not exactly what you want, but it might be a start: this snap based spectrometer has two inputs (two pols) at 2 Gsps, using an external dual 2 Gsps ADC board. you'd need to modify the design for four inputs at 1 Gsps using the on board adc's. i think there are some snap based four input 1Gsps correlators that might be closer to what you want. i suggest you check out the snap based tutorials. the above snap spectrometer does not do de-dispersion in real time. in our experiment, we write the high cadence spectral data to disk, and dedisperse later, using a desktop computer. if you want to do real time de-dispersion, you'd need to add a computer, perhaps with a GPU. best wishes, dan On Fri, Aug 10, 2018 at 9:37 AM Guillermo Gancio <ganci...@gmail.com> wrote: > Dear all, > > I would like to ask the following, if its possible.. > > I'm working in a radioastronomy observatory doing pulsar measurements with > two 30 meter antennas (one operational and a second one being upgraded). As > a Back-end we have at the moment a few Ettus boards with an instantaneous > BW of 50MHz each. > > We have the possibilitie to access a Casper SNAP board (due to the lower > price compared to a Roach2), with the aim to have 4 inputs sampled at > 500Mhz each (~1GHz BW per polarization ). > > As I'm just starting to read and study the Casper boards I have the > following question...(hope is not a too basic question). > > Is the FPGA present in the SNAP board capable to do such process? Or I > will have to distribute the process between the SNAP and a GPU/CPU.? Is any > example available? > > > Thanks to all for your time! > > Cheers. > > > www.iar.unlp.edu.ar > Guillermo M. Gancio > Head of Electronic Department. > > > From Android Device > > -- > You received this message because you are subscribed to the Google Groups " > casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu. > To post to this group, send email to casper@lists.berkeley.edu. > -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To post to this group, send email to casper@lists.berkeley.edu.
