Protocol for self-alignment of laser-through-air ethernet links
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Content is copyright
© 2002 Matthew Astley
$Id: laser-align1.about.html,v 1.3 2002/09/28 02:25:30 mca1001 Exp $
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My comments on the paper
It seemed necessary to publish some other information about
this paper to supplement or explain it.
Oh, and to mention again that the paper is not finished
yet. Sorry about that. One day. I always have other things to
do.
This page was sparked by
Derek Weston's
comment on the paper - it doesn't seem very clever for me to hand out
hyperlinks to an ever-changing to-do list.
Random thoughts
The neighbour problem
As it stands, you can't easily use a RONJA-type system to
talk to someone three doors down on the same side of the street.
My suggested solution to this is to (get permission to) attach a
small, slightly convex mirror to the front of one of the houses
opposite.
This doesn't seem like a lot to ask - certainly it is less than having
some weird electronic thing sitting there using electricity and taking
space, and it shouldn't need servicing very often.
In order to hit your friend down the street you're going to need much
finer control of the beam, but apart from that everything should
continue just as normal!
References and links from the paper
Copies of some of the references, since their hyperlinks are probably
more useful in this form:
- Twibright Labs,
"Ronja"
- Realtime Control,
"UPN Laser Transceiver"
- TODO: 802.2 standard link
- Godred Fairhurst,
"3rd level EG 3567 course",
ERG, University of Aberdeen, April 2002
- TODO: I can't get any sense out of
the K3PGP site
at the moment, and I don't remember what it was I found there exactly.
- David A. Johnson, P.E.,
"Imagineering on-line magazine", April 2002
- Matthew Skala,
"On free networking", May 1999
- Samuel M. Goldwasser,
"Sam's Laser FAQ", 1994 - 2002
- AFRL,
"Development of Laser Data Link for Airborne Operations"
- Canon,
"DT-50 Technology"
- Optical Access,
"Terescope"
Of course copying things makes them go out of date and fall out of
sync with each other. This is considered normal by programmers.