Continuous Wavelet Diagnostics (CWT)

Using continuous Complex Morlet wavelets, Sonon tracks scale-wise kurtosis and blade flutter modulation index.

Diagnosed Failure Modes

• Propeller Micro-Cracks: Rotational subharmonics ($0.5\times, 1.5\times$ rotor fundamental).
• Motor Bearing Spalls: High-frequency spectral kurtosis exceedances ($\text{Kurtosis} > 4.5$).
• Structural Resonance: Airframe modal vibration peak shifts.