A method in a wireless communication terminal including generating a first averaged signal measurement on a first carrier frequency, wherein the first averaged signal measurement is based on a first averaging period, producing a first filter output based on the first averaged signal measurement weighted by a first weight, generating a second averaged signal measurement on the first carrier frequency, wherein the second averaged signal measurement is based on a second averaging period, and producing a second filter output based on the first filter output and based on the second averaged signal measurement weighted by a second weight, wherein the first weight is less than the second weight if the second averaging period is greater than a threshold.