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

Table 1

Amplitude of signal components under the different SNR.

SNR	SNR1=-1		SNR2=-4		SNR3=-7		SNR4=-10
Signal component	Raw	Process	Raw	Process	Raw	Process	Raw	Process
	0.9999	0.9938	1.0260	1.0240	1.0370	1.0730	1.114	1.112
	0.4703	0.4826	0.5317	0.5482	0.7353	0.7533	0.5177	0.5234
	0.7299	0.7152	0.7116	0.7235	0.5110	0.4968	0.6800	0.6621
	0.8340	0.8324	0.8264	0.8142	0.8389	0.8338	0.8379	0.8923
Max difference	0.0123		0.0122		0.0360		0.0544