[PSUBS-MAILIST] Surface controlled drones

[via Personal_Submersibles]

Good questions; underwater com is something we all want to  improve.  Could 
you please introduce yourself, tell general location?   There may be some 
PSUBS members close to you.
 
Best regards,
Jim Todd
Missouri, USA
 
 
In a message dated 6/2/2014 4:27:44 P.M. Central Daylight Time,  
personal_submersibles at psubs.org writes:

Hey I am  a submersible enthusiast and an expert engineer.

One thing that is  bugging me is why communication with devices at great 
depths (the very bottom  of the ocean) seems to be so hard.

The thing I am working on is  miniature drones fully equipped and deployed 
en masse to scan and collect data  from the bottom of the ocean.

Primarily, I want to find Amelia Earharts  wreckage ;)

My question is, would it be difficult to create an  underwater device that 
can communicate via microwave to  surface?

Microwaves on the electromagnetic spectrum can pass through  things in a 
line of sight manner if there is nothing obstructing  them.

But I am weak on my physics and maybe the several billion tons of  water 
that it has to pass through would squelch the signal.

Is there a  means of telecommunication with high enough bandwidth to 
transfer signals from  that distance and that depth?

Although our earth is covered 70% of  water. I think we have seen 
technology come to the point where a mass  deployment of small controllable drones 
equipped with detection devices could  search the sea floor.

I would great appreciate your input.

Sent  from my  iPad
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