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Mailing List Logs for ShadowRN

From: David Buehrer <dbuehrer@****.ORG>
Subject: Re: 2000 Leagues V1.2
Date: Fri, 1 Nov 1996 11:51:48 -0700
Peter Coxon wrote:
|
|>Why Radar instead of Sonar? And, it's a whole lot easier
|>to wire-guide the torpedo to the target that's been
|>identified by the system (and cheaper, you don't waste
|>money on a guidance system in the torpedo itself).
|>
|>And, I'm not sure though, ultra sound has pretty piss poor
|>range underwater (or maybe short range resolution).

|Okay, What is the definitive long range high quality under water system,
|idea's? Ultra sound doesn't seem to be too popular, Radar in the above article
|was just me taking the longest range painter from FOF and bunging it in
|there...with 1/10th range....

Active sonar is works almost the same as radar. It sends out a wave of
sound and the sound reflects off of targets. Then you do some math and you
know where everything is. It gets a little more complicated when you start
taking into account temperature differences in water and some wierd
reflections that can occur. Unless you really know a lot about sonar I
wouldn't worry about it too much.

Passive sonar is a misnomer. There is no sonar involved. You have
accoustic sensors that listen for noise. The sensitivity of the sensors
and the filtering abilities of the system program decide what you can and
cannot hear (and it also depends on how quiet the other guy is). And
temperature differences play a big part. If something is under a
temperature differential the differential can block or muffle sound.

And, if you're using active sonar and the other guy has passive sensors,
he'll know exactly where you are.

And torpedoes launched from subs have a minimum range. Well, actually the
torpedoes are set *not* to detonate within a certain distance of the sub
that fired them (because the force of shock wave travels pretty far). This
can be disabled though.

And there are two types of torpedoes. Wire guided torpedoes are controled
by the sub that launched them. Other torpedoes have their own sonar and
seeking software (and they do not discriminate, if they lose their target
they start circling and go after the first thing they find). And fast
torpedoes make a lot of noise. But if you're really sneaky you'll find
your target with passive, send a nice slow (quiet) wire guided torpedoe at
him, and take him out without him even knowing what happened.

|Ps. Thnax for the quick reply, it's currently 5:22PM here and I check my email
|every hour aprx.

I get bored at work too :)

-David

/^\/^\/^\/^\/^\/^\/^\ dbuehrer@****.org /^\/^\/^\/^\/^\/^\/^\
"His thoughts tumbled in his head, making and breaking
alliances like underpants in a dryer without Cling Free."
~~~http://www.geocities.com/TimesSquare/1068/homepage.htm~~~~

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