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From: | mleech |
Subject: | Re: [Discuss-gnuradio] radio astronomy fast radio burst help requested |
Date: | Fri, 01 Apr 2016 10:35:05 -0400 |
User-agent: | Roundcube Webmail/1.0.2 |
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 coherent. For example, to equal the collecting area of Parkes, you'd need (at 500MHz): Parkes gain: 45dBi Dipole gain: 2.15dBi 45 - 2.15 = 42.85dB(antenna) Almost 20,000 simple half-wave dipole antenna required, and they'd all need to be phase-coherent. If I've botched the math, please correct me.
On 2016-04-01 10:20, Alexander Levedahl wrote:
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