🚀 go-pugleaf

Josh916 wrote:
> On Mar 21, 3:33 pm, Donald <Don...@dontdoithere.com> wrote:
> 
>>Josh916 wrote:
>>
>>>The project is to locate a r/c boat in a roughly 2 to 3m^2 water
>>>filled box, hence the transmitters or recievers will only be on the 3
>>>or 4 walls of the box.
>>
>>>It will need to be fairly accurate considering the size of the box
>>>relative to the size of the boat (i.e down to cm's).
>>
>>>We are also considering placing a webcam above the box and using image
>>>processing to locate the boat, however I thought we might get more
>>>accurate results using RSSI.
>>
>>>I hope that helps.
>>
>>>Josh
>>
>>>On Mar 21, 2:44 am, chuck <nos...@nospam.org> wrote:
>>
>>>>Josh916 wrote:
>>
>>>>>I would like to use RSSI to locate an object in a 3D space. The space
>>>>>will be a square box with transmitters located on the 4 corners. An
>>>>>object will be place at certain positions within the box and I want to
>>>>>be able to determine its location inside the box. Much like an
>>>>>internal GPS.
>>
>>>>>I would like to know what components (IC's?) I need to perform such a
>>>>>task.
>>
>>>>>Or if anyone else has any other more effective methods to acheive such
>>>>>a task your comments are welcomed.
>>
>>>>>Thanks,
>>
>>>>>Josh
>>
>>>>GPS doesn't use RSSI, of course.
>>
>>>>Is the task you want to perform the use of RSSI, or the determination of
>>>>position location with a box? What kind of accuracy do you hope to achieve?
>>
>>>>Have you considered ultrasonic distance measurement?
>>
>>>>Chuck
>>
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>>
>>Josh,
>>
>>Your idea has been tried by big governments with big budgets.
>>
>>NO, it will not work.
>>
>>If you care to read a little, you may find a not so cheap way of doing
>>what you want:http://en.wikipedia.org/wiki/Pseudolite
>>
>>google has lots of links:http://www.google.com/search?hl=en&c2coff=1&sa=X&oi=spell&resnum=0&ct...
>>
>>good luck
>>
>>If you find a way of getting this done, in any home made way,
>>please let us know.
>>
>>donald- Hide quoted text -
>>
>>- Show quoted text -
> 
> 
> Thanks for everyones help, RSSI was mentioned to me by a fellow
> academic and I'm at the stage of researching its possiblilites.
> 
> He seems to think that it is possible.

This I would like to see.

I too tried in college to use ultra-sonic devices.

It was just too difficult to get a signal that would work.

I will admit the technology has improved 1,000 fold over the years.

However, physics has not.

Good Luck

I would be very interested in how you both get this done.

donald


> 
> I will keep looking into it as I also have a backup plan using the
> webcam.
> 
> ---------------
> AS FOR PHIL ALLISON I THINK YOU SHOULD LOOK AT THIS WEBSITE:
> http://members.iinet.com.au/~rutlidge/alanindex.html IT SEEMS YOUR
> REPUTATION PROCEEDS YOU.
> ---------------
>