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Topic: i need RSSI value to distance calculation formula (Read 440 times) previous topic - next topic

anbu123

any formula for finding distance from rssi values

mauried

There isnt one .
RSSI is useless for measuring distance.

anbu123

Any other methods for finding distance between access point and client device??

PaulS

Quote
Any other methods for finding distance between access point and client device??
A tape measure.
The art of getting good answers lies in asking good questions.

NicoleClicquot

#4
Mar 06, 2018, 12:45 pm Last Edit: Mar 06, 2018, 12:52 pm by NicoleClicquot
Funny question... :)
No there is not a general formula as RSSI is different in every location.

However, on 1 local fixed location:
It is possible to measure RSSI with most devices/libraries....
It is also possible to measure actual distance with a tape measure....
So just move your device away from the access point in a straight line and write down the RSSI values with every meter further away from the access point.

You could then display that saying something like
if (RSSI > 10) then 1 meter
if (RSSI > 20) Then 2 meters

However, it is not linear and has a lot of other variables.
RSSI is not stable so your outcome would be a ball park number.
However, could be fun to play around with it, dependent on your application.
Let us know you progress and application / project...

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