Re: Navy Taps Lasers for Subsea Telegraph

Jack Linthicum ha scritto:

Nope, just the info in that article. Even if the range was under 1000
miles,
wouldn't it still be useful for communicating between subs and/or
surface
ships for better coordination?

If this tech can be used to communicate with subs, could it also be
adapted for sub detection?

I was once tasked with looking into the idea of using neutrinos for
communications with submarines. The response was an antenna with a
volume of 10,000 cubic kilometers was needed. The laser idea is just
as loony. Look at any device that uses a laser. The laser signature is
a dot, at a 1000 miles that dot is multiple miles wide and less dense
in proportion. You don't get a return signal so what are your chances
of hitting a 10,000 square foot target at 1000 miles?

Add to this that even in tactical scenarios (CVBG protection and cruise missile attacks are the two tactical scenario in wchich friendly forces can have a precise idea of the whereabout & course of the SSN/SSGN) a boat should have the maximum freedom of action, and a laser, even embarked on a helo/RPV, being a pinpoint device, can't have reasonable hopes of establishing contact.

of course, whatever despatch craft/vessel assigned to undersea relay is the same thing as a big downward pointing arrow "submarine here".....

Back to drawing board, I fear....

Best regards from Italy,
Dott. Piergiorgio.
.

Relevant Pages

  • Re: Navy Taps Lasers for Subsea Telegraph
    ... If this tech can be used to communicate with subs, ... The laser idea is just ... at a 1000 miles that dot is multiple miles wide and less dense ...
    (sci.military.naval)
  • Re: Navy Taps Lasers for Subsea Telegraph
    ... laser that could be used to communicate with submarines." ... Anything under 1000 miles ... If this tech can be used to communicate with subs, ...
    (sci.military.naval)
  • Re: Bad News for Moon Hoax Buffs fuck nasa
    ... Then you d understand the laser is said to be reflected back over it's ... The colector is at the same point the laser is. ... IF you dont know the exsact distance your colector will be 1/2 mile ... BUT as the earth is 16 miles off at NOON from the moon. ...
    (sci.physics)
  • I tried the laser "tracking" trick
    ... Even using a collimating scope ... With this scope, at a distance of five miles, ... The cockpit of a Continental Airlines 737 was illuminated by a laser ...
    (sci.astro.amateur)
  • Re: The Missing Secrets Of Nikola Tesla
    ... The laser will go far but you cant aim it. ... Nothing stops a 5 inch round at 10,000 miles per second. ... its resistance to suden impulsive force with 350 tesla pulling and 350 ... no fire pin no moving parts. ...
    (sci.physics)