rssi and link physical distance are related in a complex way.
It depends on the absortion of microwaves in the enviroment.
http://www.cs.berkeley.edu/~kamin/pubs/whitehouse02calamari.pdf
As far as TOSSIM is concerned I don't think power setting and received
strength are implemented, so simulations won't work.
this paper is indeed a good starting point, there are many others.
for practical use i'll look into an of-the-shelf implementation.
wireless group of ti (formerly chipcon) has a location engine, licensed from motorola, build into the cc2031 with 802.15.4 radio.
here is a reference: http://www.chipcon.com/files/Radiolocation_Engine_WP.pdf
unfortunately the mcu in the SoC is based on the 8051 core.
we haven't heard of any tinyos compatible platform based on it.
seems it's only been used for zigbee.
regards,
Claro.
Yinying Yang wrote:
> I am wondering how to use the signal strength to compute the distance
> between the sender and the receiver. I think there should be some
> relationship between the RSSI and the transmission range. Is there any
> formula about this or any tool can be used in TOSSIM?
>
> Thank you.
>
> Yinying Yang
_______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
