Table 4.

VS Estimates for Three Distances.

Subject	Gender	Height (cm)	Method	Parameter	7 m	10 m	12 m
I	Female	158	Proposed	Frequency (Hz)	0.37	0.31	0.31
				Range Error (m)	0.04	0.05	0.08
				SNR (dB)	−4.87	−6.76	−10.4
II	Female	163	FFT+ Window	Frequency (Hz)	0.14	0.20	0.20
				Range Error (m)	0.15	0.27	11.7
				SNR (dB)	−9.08	−13.7	−15.6
IV	Male	182	FFT	Frequency (Hz)	11.7	11.7	11.7
				Range Error (m)	6.70	9.70	11.7
				SNR (dB)	−29.4	−31.9	−32.2