Yes, entirely feasible if you kind of "fudge and pray" on the practical realities. Even 10,000Jy is a tiny signal when cast in the context of a small antenna (2-3dBi).
But can the technical infrastructure be built with relatively-cheap SDR-based kit, and Gnu Radio? Absolutely. On 2016-04-01 11:14, Dan McKenna wrote: > Marcus, > > Thank you for your replies > > Yes, No way with a dipole at a signal flux of 30J > > In discussions with two of our faculty members I was told that > the bursts can be 10,000 J and attempts to find an afterglow > have not yielded certain results. > > it is not known if any big antenna was really pointing at the burst such > that the real gain of the antenna relative to the source position is known. > > This project is looking for the Big Bursts > > Yes the V/UHF bands are very busy so the big key is the identification of > a burst that sweeps through the 10 Mhz bandwidth within certain criteria. > > The network would then be used to further process events using time of arrival > as the second filter. > > We would also like to make this work using two orthogonally polarized > antennas > > Does this seem more reasonable? > > D. > > The Lorimer burst was 30Jy peak, lasting only a few milliseconds. You > need instruments with *LARGE* effective apertures to "see" such an > event, and I have doubts about the ability to use a mere ca 20 > dipoles globally distributed to synthesize such an aperture. Most of the > FRB events that have been logged are a *LOT* smaller than the Lorimer > event. Since those stations would likely not be phase-coherent, > then any spectra adding would only improve sensitivity by > sqrt(N)--you don't get to effectively use the sum of the effective > apertures of > the individual stations. > > The CHIME observatory, currently entering early operations near > Penticton, BC, has FRBs as a secondary objective, and their antenna > can hardly be described as "a dipole or two". > > But, you're the astronomer, so perhaps there's something critical that > I've missed... > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio [1] Links: ------ [1] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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