I do not want to know when they pass through my device(I keep envisioning
shooting at/through a picture frame).  I just want to know where they passed
through.  If the Z axis is the line of travel I just want to know the X-Y
positions at the plane of the "picture frame".
As far as accuracy goes, I am thinking in multiples of the diameter of the
pieces of shot.  Maybe +-1 or 2 diameters.

Tony



-----Original Message-----
From: Bob Ammerman [mailto:RAMMERMAN@PRODIGY.NET]
Sent: Monday, January 22, 2001 5:30 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: Multiple small object detection


So, are you or are you not interested in the time domain?

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

----- Original Message -----
From: Anthony Bussan <TBUSSA@WOODWARD.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, January 22, 2001 6:05 PM
Subject: Re: [EE]: Multiple small object detection


> I know you guys are probably thinking that I could just shoot at a piece
of
> paper and then look at it.  I do appreciate the KISS solution, but this is
> already where I am at.  When you are "patterning" the shot from a shotgun,
> you try to get the best distribution to optimize your chances of hitting
the
> clay bird.
> This weekend, after patterning 6 kinds of shells, through two different
> guns, with 3 different choke tubes each, and at several distances from the
> target paper, I ended up with nearly 100 pieces of paper hanging in the
> shop.  4 by 4 foot paper takes up a little room anyway.  Then you have to
> manually count over 300 holes on each piece, for now we ignore the holes
> outside of a certain diameter.  Then you look for gaps in the pattern and
> subjectively judge the different combinations.
> I would like to be able to electronically capture the shot pattern to
speed
> things up a lot, and then put together some software to analyze it and
graph
> it out.  Some statistical methods could be employed too.
>
> Thanks to everyone, I really appreciate the help so far!
>
> Tony
>
> olin:
> >Does the device have to work more than once?
>
> simon:
> you're thinking "big sheet of cardboard" ? think i have seen a similar
> technique used before ... :)
>
> --

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