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RSSI to Distance Conversion
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function calculateDistance(rssi) { | |
var txPower = -59 //hard coded power value. Usually ranges between -59 to -65 | |
if (rssi == 0) { | |
return -1.0; | |
} | |
var ratio = rssi*1.0/txPower; | |
if (ratio < 1.0) { | |
return Math.pow(ratio,10); | |
} | |
else { | |
var distance = (0.89976)*Math.pow(ratio,7.7095) + 0.111; | |
return distance; | |
} | |
} |
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