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Article #2019

Re: Using RSSI to locate an object

#2019
From: Josh916
Date: Wed, 21 Mar 2007 04:56
84 lines
4342 bytes
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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>
> >>- Show quoted text -
>
> 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.

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.
---------------
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From: "Josh916" <jkacen@gmail.com>
Newsgroups: sci.electronics.design,aus.electronics,sci.electronics.basics
Subject: Re: Using RSSI to locate an object
Date: 20 Mar 2007 21:56:10 -0700
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