HOW TO CALCULATE RSSI USING TX POWER AND INSTANT RSSI VALUE AND ENVIORNMENTAL FACTOR

RE: HOW TO CALCULATE RSSI USING TX POWER AND INSTANT RSSI VALUE AND ENVIORNMENTAL FACTOR

dejans — Tue, 13 Sep 2022 11:43:57 GMT

Hi,

If you calculate as shown below with N=2,

distance = 10^((-56.2+66.5)/(10*2)) = 10^(10.3/20) = 3.27 m

If you choose bigger N, you are expected to get smaller distance.

Although distance measurement based on RSSI can provide some approximate distance estimate, the distance value will not be accurate as path loss factor N depends on the environment.

Best regards,
Dejan

RE: HOW TO CALCULATE RSSI USING TX POWER AND INSTANT RSSI VALUE AND ENVIORNMENTAL FACTOR

Embel_Tech — Tue, 13 Sep 2022 08:54:56 GMT

Hi,

Distance = 10 ^ ((Tx – RSSI)/(10 * N))

For example

if i m taking readings for beacon interval of 5 sec my observation is...

-> getting rsssi value for 3 meter is -66.5

-> Tx(by observation 1 meter rssi) is -56.2

-> if taking N is 2 or 3 or 4

my calculated distance is not showing expected distance 3 or approx. 3 meter

so how to fix formula or value of N.????

RE: HOW TO CALCULATE RSSI USING TX POWER AND INSTANT RSSI VALUE AND ENVIORNMENTAL FACTOR

dejans — Fri, 09 Sep 2022 13:40:58 GMT

HI,

Could you provide the values for the parameters that you included in your calculation?

Could you please also provide more information about your testing environment?

[quote user=""]calculation are wrong/ not matched with expected [/quote]

Can you provide more information why you think that calculations are wrong? Could you specify what is expected?

Best regards,
Dejan