[PSUBS-MAILIST] Underwater Navigation

Øystein Skarholm via Personal_Submersibles personal_submersibles at psubs.org
Wed Sep 4 16:03:37 EDT 2019


To start off with the price. for the X150 and X010 package, I paid
7500USD....approx. At first, the system had lots of bugs and issues. I was
on their back for a year. The position would jump all over the place due to
backscatter signals, especially on the flat sandy seabed and still surface.
With new software and firmware, I can now see the rov position directly on
google earth map or esri maps. The position is stable and the system seems
to be operating well. However, both these systems are intended to be the
sub, rov or divers position on the surface. You will not be able to see
your position from within the sub. BUT, it may be possible to use 2 of X150
as they are both transponders/transducers to be able to get the relative
position from the X150 on the sub onto a laptop onboard the sub. If they
have a software to do so is a different question....who knows.
FAnother option - this type of equipment is better suited
https://www.blueprintsubsea.com/pages/product.php?PN=BP01068 I have very
little knowledge about it.

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ons. 4. sep. 2019 kl. 18:30 skrev Cliff Redus via Personal_Submersibles <
personal_submersibles at psubs.org>:

> This Blueprint Subsea system looks promising.  Can you give some of your
> experience with the kit?  Also which transponders are you using and what
> was your cost?  Are the range numbers given at the web site in agreement
> with your experience.
>
> Cliff
>
> On Wednesday, September 4, 2019, 09:26:15 AM CDT, Øystein Skarholm via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> 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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-- 
Vennlig hilsen
Øystein Skarholm
91369599
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