Hi,
for a given cell, it gives you the average position of the cell
coverage, based on where it has been "seen" by openbmap logs.
I am not sure if the signal strength is being used in computing that
position. You should ask on the openbmap website, as I have not worked
very much on the algorithm.
Nevertheless what I know is that signal strength is very inaccurate,
because it is subject (a lot) to interferences (reflection, going
through material, etc.).
Onen
On 15/06/12 13:26, robin wrote:
hi,
I had seen that they also provide an online api, though as far as I understand
for each cell that your phone sees it you can get the gps data of the cell. So
now you have eg the coordinates and signal strengths from 4 cells how do you
calculate where you are. Is there a function for the have fast the signal de-
creases in regards to your distance to the cell? are all cells signaling with
the same signal strenght / amount of energy? The android/iphone gsm lokating
mechanism works very accurate, but I have no idea how they do it.
best regards
robin
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Onen
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