(meteorobs) VLF Meteor Observations

Jean-L. RAULT f6agr at orange.fr
Tue Mar 20 13:20:23 EDT 2012


Hi George

My ELF/VLF observations are performed thanks to a broadband E-field 
receiver (5 Hz to 24 kHz @-3dB), using a digital recorder for storing 
the data.
The data are then processed and analysed manually, thanks to some 
spectral analysis softwares.

See 
http://hal.archives-ouvertes.fr/docs/00/63/85/48/PDF/rault-vlf_offprint.pdf 
for details

Regards

Jean-Louis Rault





Le 20/03/2012 13:43, drobnock a écrit :
> Hi
> Thomas Ashcraft and Jean Claude and others have been in the process of
> receiving VLF signatures from meteors. I believe the signatures they are
> receiving are meteors with visual magnitudes of plus 5 or greater.
> Although this information is not always given. Also they are showing
> some correlation between forward scatter and VLF noise generated by the
> meteor. The forward scatter frequency is identified in  the 40 to 100
> mhz range.
>
> My question is, those conducting observations to detect VLF signatures,
> are you using a broad frequency response with your receivers  -- .01 to
> 100khz -- or are you conducting your observations with in a know
> received frequency? Whilst doing my observations, my receiver is tuned
> to 3200 hertz or 3.2 khz with a third  harmonic detectable.  I am not
> automated, so by observations are visual and unfiltered.  I would be
> interested in your responses.
> George John Drobnock
>
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