Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

Dan, This is HF, but similar concept of a low cost receiver, with integrated GPS, tacked onto a single board computer. https://www.kickstarter.com/projects/1575992013/kiwisdr-beaglebone-software-defined-radio-sdr-with Lou -- View this message in context:

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

We are trying to use simple time of arrival so using a 1PPS sync of a GPS should bee good enough. For this Mega Burst detector, much can be learned with out the need for VLBI type of resolution. This is sort of like the LIGO gravity wave detector -- View this message in context:

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

They (likely) have hardware designed specifically for their task that is higher cost and quality. On Fri, Apr 1, 2016 at 10:35 AM, wrote: > The main thing is that these bursts are *weak* (< 1Jy typically), and > *short duration*. Detecting a CW weak source with smaller

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

The main thing is that these bursts are *weak* (< 1Jy typically), and *short duration*. Detecting a CW weak source with smaller antennae is feasible, because you can use long integration times. You have no such option here, unless you're talking about hundreds or thousands of dipoles, all phase

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

There are 3 options that I can think of: 1) Use multiple SDRs at each location. 2) Run an optimization algorithm as a post processing step to figure out what the phase synchronization should be. 3) If there is a transmitting satellite near there in frequency, use that to determine what the

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

VLBI guys usually have a local H1 maser clock, they go through a complex synchronization ritual prior to the start of observations. H1 masers have short-term stability on the order of 1e-16. GPS synchronization would be a *starting point* for such things. On 2016-04-01 08:42, madengr wrote:

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

What would it take to get phase coherency, say at 1 GHz, on a global scale; short of running cables? I assume with a moderate priced GPSDO one can get 10E-12 stability, so that would be 0.01 Hz frequency stability at 1 GHz. Does that mean you can integrate for 10 seconds and stay within 0.1

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

On 03/31/2016 11:10 PM, Dan wrote: Hello Radio Heads, Back in 2001 a burst at 1.4 Ghz from the sky was detected and is known as the Lorimer burst. Since then, other groups have detected FRB…Fast Radio Bursts that are very strong, appear to be extragalactic, and short…milliseconds in duration.

Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested

On 03/31/2016 11:10 PM, Dan wrote: Hello Radio Heads, Back in 2001 a burst at 1.4 Ghz from the sky was detected and is known as the Lorimer burst. Since then, other groups have detected FRB…Fast Radio Bursts that are very strong, appear to be extragalactic, and short…milliseconds in duration.

[Discuss-gnuradio] radio astronomy fast radio burst help requested

Hello Radio Heads, Back in 2001 a burst at 1.4 Ghz from the sky was detected and is known as the Lorimer burst. Since then, other groups have detected FRB…Fast Radio Bursts that are very strong, appear to be extragalactic, and short…milliseconds in duration. The current theories included