I am working on a mobile robot controlled via a wireless 2.4 GHz link.The receiver is connected to the Arduino Uno which serves onboard as the main controller. The most critical (and main) input channel coming from the receiver produces a very noisy signal, which leads to lots of minor changes in the output of the actuators, even though these are not needed.

Plot of the input of the Arduino in a 30 second interval.

I am looking for libraries that can perform efficient smoothing. Are there any signal smoothing libraries available for the Arduino (Uno)?