Feature Frequency Extraction Based on Principal Component Analysis and Its Application in Axis Orbit

Figure 6

The time and frequency domains of reconstructed signal. (a) The time domain of the reconstructed signal via the first set of eigenvalues. (b) Amplitude spectrum of Figure 6(a). (c) The time domain of the reconstructed signal using the second set of eigenvalues. (d) Amplitude spectrum of Figure 6(c). (e) The time domain of the reconstructed signal using the third set of eigenvalues. (f) Amplitude spectrum of Figure 6(e). (g) The time domain of the reconstructed signal using the fourth set of eigenvalues. (h) Amplitude spectrum of Figure 6(g).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)