Adaptive noise cancelling and timefrequency techniques for rail surface defect detection
Adaptive noise cancelling technique (ANC) theory is given. Application of ANC has been made for rail surface defect detection. A comparison between multiple timefrequency techniques has been made. The experiments proved ANC is an effective tool to eliminate unwanted noises. STFT, SPWVT, CWT and WT present different advantages and disadvantages.
adaptive noise cancelling wheelrail contact timefrequency analysis signal processing