(meteorobs) Possible Innovation ? - fireball movies with scattersound

[stange34 at sbcglobal.net]

Just a suggestion for your consideration if you have established a confirmed 
direct scatter connection to specific Fireball events on camera.

A research effort  into characterizing Fireballs by way of scatter signal 
envelope would be unique. These areas of application might be using sideband 
trapizoidal modulation shape or something similar(remember the trapizoid on 
early post Korean War sideband?)  to determine some of the following 
possibilities. (I assume you are a radio amateur).

a) Angle of attack, either approaching or receeding,
b) Direction,
c) Velocity (Speed & Direction),
d) Length of any trains as a means of determining its additional effect on 
scatter,
e) Mass, or physical ablation diameter/length,
f) Ablation temperature,
g) Additional significant meteor characteristics you may think of....

Putting scatter into a "more structured science" beyond simple detection 
would advance knowledge in meteor science. My opinion, however small.

YCS


----- Original Message ----- 
From: "Thomas Ashcraft" <ashcraft at heliotown.com>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2007/10/31 17:56
Subject: (meteorobs) Possible Innovation ? - fireball movies with 
scattersound


>
> Oct 31, 2007
>
> Greetings Meteor Observers.
>
> Here is an update on my fireball capture system ( video and radio) and I
> have a question for the experts.
>
> I am now recording optically all night with an all sky camera and
> fisheye lens and have added a second forward scatter radio into my
> system. I am working at 61.250 MHz and 83.250 MHz. ( Both radios are
> ICOM PCR 1000 models).  The system is now capturing fireballs with
> stereo sound.
>
> Question :  Has anyone else made movies of fireballs with sound like
> this?  I am wondering if this is original work or some sort of possible
> innovation?
>
> Here is a webpage with a sample movie with stereo forward scatter :
> http://www.heliotown.com/Fireball_Video_Oct_30_2007_Ashcraft.html
> :
> :
> And below are a couple of movies ( mono sound in these cases) that
> exhibit sonic detail of the fireball trail as the fireball flares.
> (Below movies are choice of .mp4 or .divx)
>
> http://www.heliotown.com/fb20071026_0755UTspec.divx          3 MB
> http://www.heliotown.com/fb20071026_0755UTspec.mp4          3.4 MB
> :
> http://www.heliotown.com/fb20071022_054550utNICE.divx      1.1 MB
> http://www.heliotown.com/fb20071022_054550utNICE.mp4      3 MB
>
> Many thanks for any references to other related work.
> .
> Clear skies,
> Thomas Ashcraft
> ashcraft(at)heliotown.com
>
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