- All Implemented Interfaces:
- RssiFilter
public class ArmaRssiFilter
extends Object
implements RssiFilter
This filter calculates its rssi on base of an auto regressive moving average (ARMA)
It needs only the current value to do this; the general formula is n(t) = n(t-1) - c * (n(t-1) - n(t))
where c is a coefficient, that denotes the smoothness - the lower the value, the smoother the average
Note: a smoother average needs longer to "settle down"
Note: For signals, that change rather frequently (say, 1Hz or faster) and tend to vary more a recommended
value would be 0,1 (that means the actual value is changed by 10% of the difference between the
actual measurement and the actual average)
For signals at lower rates (10Hz) a value of 0.25 to 0.5 would be appropriate