Rssi

Inconsistant Variation in BLE Beacon RSSI Values for Distance Measurement

Inconsistant Variation in BLE Beacon RSSI Values for Distance Measurement
  1. How accurate is RSSI for distance?
  2. How to calculate distance from the RSSI value of the BLE beacon?
  3. How is ble RSSI calculated?
  4. How far is RSSI?

How accurate is RSSI for distance?

With the combination of the mentioned improvement methods a RSSI-based micro-location system using beacons can achieve accuracy of 1-3 meters.

How to calculate distance from the RSSI value of the BLE beacon?

You can calculate the distance information from RSSI value with this formula: Distance = 10^((Measured Power - Instant RSSI)/10*N). N is the constant for the environmental factor.

How is ble RSSI calculated?

Distance = 10 ^ ((Measured Power -RSSI)/(10 * N))

How far is RSSI?

The signal strength depends on distance and Broadcasting Power value. At maximum Broadcasting Power (+4 dBm) the RSSI ranges from -26 (a few inches) to -100 (40-50 m distance).

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