[PSUBS-MAILIST] Inertial navigation, 3-axis

[via Personal_Submersibles]

Hi Hank,
 
I'm a bit delayed in getting back to you.  Below are some  links regarding 
Inertial Navigation Systems (INS).  Some are specifically  designed for 
underwater applications.  The modules have become  quite small (1" square).  My 
desire is to have the entire track display  onscreen and download it to a 
thumb drive at the end of the mission.  
 
One of the advantages of 3-axis INS is that it can provide  heading, depth, 
rate of ascent/descent, speed independent of current, drift,  tilt, etc.
 
Obviously a starting point has to be established on the  surface (GPS or 
other position reference and compass heading).   However in many situations 
such as when operating from a lake  ramp, you could just label the launch as 
"Starting Point" and call the  initial heading "0" or whatever no matter 
which direction you're headed  assuming you're going to be returning to the 
starting point.
 
SBG Systems has been making rapid advancements in accuracy and  cost 
reduction for INS.  However inertial changes in small, manned  submersibles are 
much smaller than in submarines, boats, and aircraft.  If  I were to the point 
of putting together a system, I would contact them for  advice on which 
components to use to build it.
 
Jim
 
 
SBG Systems:
 
http://www.sbg-systems.com/products/subsea-inertial-systems-overview
 
http://www.sbg-systems.com/products/inertial-systems-overview
 
http://www.sbg-systems.com/docs/Article-SBG-SYSTEMS-ON&T.pdf
 
http://www.sbg-systems.com/products/ig-30-3d-compass
 

Sparkfun:
 
https://www.sparkfun.com/products/12916
 
https://www.sparkfun.com/search/results?term=compass&what=products
 
OceanServer:
 
http://www.oceanserver-store.com/
 
http://www.ocean-server.com/compass.html?gclid=CKHazZGbiLMCFQpgMgodAQgALg
 
 
 
 
 
 
 
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