[PSUBS-MAILIST] Underwater Navigation

[Øystein Skarholm via Personal_Submersibles]

Check this out for navigation. I myself use the one from Blueprint subsea.

USBL Blueprint Subsea <https://www.blueprintsubsea.com/seatrac/index.php>

Underwater GPS
<https://bluerobotics.com/product-category/sensors-sonars-cameras/underwater-gps/>



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ons. 4. sep. 2019 kl. 15:22 skrev Cliff Redus via Personal_Submersibles <
personal_submersibles at psubs.org>:

> We need a PSub wis kid to make a DIY version of this kit.
>
> Cliff
>
> Sent from my iPhone
>
> On Sep 4, 2019, at 12:12 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Cliff,
> Just got a price on the Subsonus you referenced. Part of the reply is
> below...
>    "A kit for the vessel (item code: SUBSONUS-SURFACE-KIT), includes the Subsonus
> USBL, pole mounting bracket, a GNSS Compass, PoE-Injectors and cables.
> Provide a boat, a pole, power and a network and you'll have yourself a
> tracking solution that you could mobilise immediately.
> This surface kit is US$22,800."
> Alan
>
>
>
>
> On 1/09/2019, at 1:29 AM, Cliff Redus via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alan, an alternative would be to order an off-the-shelf USBL
> https://en.wikipedia.org/wiki/Short_baseline_acoustic_positioning_system system
> like Subsonus | Advanced Navigation
> <https://www.advancednavigation.com/product/subsonus>
>
>
>
>
> On Saturday, August 31, 2019, 05:54:47 AM CDT, Alan via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> I was looking at GPS receivers for my sub, mainly for estimating my
> surface speed & determining my range based on my power consumption.
> But it occurred to me that you could make a similar system to GPS for
> underwater navigation.
> Have 4 buoys placed around your intended dive location that have GPS
> receivers & ultrasonic transmitters. With a bit of electronics the
> submarine
> could locate itself with trilateration ( as in GPS) in relation to the 4
> bouys.
> The 4 buoys in turn are locating their position off satellites & relaying
> this
> information via the ultrasonic transmitters to the sub. This way the pilot
> could use charts to plot where they were & where they had been.
> It wouldn't matter too much if the buoys were blown about or if they moved
> in the current as they would update their position.
> It may be helpful for grid searching.
> If you wanted to get more serious you could put small motors on the buoys
> that automatically held them in position as Minnkota are now doing with
> their radio controlled motor.
> Or is this already done?
> Alan
>
> You bolt this unit to the top of your sub and drop the corresponding
> tender transponder into the water and  the sub (as well as the tender)
> knows its submerged GPS location real time.  Tender knows it's GPS location
> and the surface unit calculates the relative location of the sub then sends
> the calculated GPS location back to the sub real time.  There are a number
> of these USBL systems.  For the Psub community, the trick would be to
> standardize on one that does not cost an arm and a leg.
>
> Cliff
>
>
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-- 
Vennlig hilsen
Øystein Skarholm
91369599

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