4 years, 11 months ago.

nrf51 dongle calculate distance, weird values

hi

I used the nrf51 dongle to receive advertisement packet from other nrf51 dongle. I used this formule, d = 10 ^ ((TxPower - RSSI) / 20) From this link below https://forums.estimote.com/t/determine-accurate-distance-of-signal/2858 .

Example, txpower = -59, and received rssi is -80. d = 10 ^ ((21) / 20) = 11.2m

However, even the distance in between the two dongles are around 1m, it display very weird distance value like 10-20m. Is it the calculation method wrong? or is the antenna poor performance?

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