Sinusoidal Frequency Modulation Fourier-Bessel Series for Multicomponent SFM Signal Estimation and Separation

Table 2

Major subject of the three IF estimation methods.

	The proposed method	The FB-based method	The SFMFT-based method
Analyzing subject	Phase track	Frequency content	Phase track
Key parameter	-resolution,; signal length	Signal length	Signal length
Key parameter; selection	: as large as possible,		As large as possible
Resolution limit	No theoretical limit	, roughly 0.5 Hz	No theoretical limit
Acceptable SNR	Roughly 0 dB	Roughly 0 dB	Roughly 8 dB