Figure 8From: Multiharmonic Frequency Tracking Method Using The Sigma-Point Kalman Smoother(a) Spectrogram of residuals using the EKS tracking of a photosensor insect activity signal. (b) Spectrogram of residuals using the FBSL-SPKS tracking of a photosensor insect activity signal.EKS residuals (NMSE = 0.104)FBSL-SPKS residuals (NMSE = 0.038)Back to article page