An Introduction of a Robust OMA Method: CoS-SSI and Its Performance Evaluation through the Simulation and a Case Study

Table 4

CoS-SSI results.

		Mode 1				Mode 2				Mode 3
		(Hz)	Error ()		Error ()	(Hz)	Error ()		Error ()	(Hz)	Error ()		Error ()
Theoretical value		7.0119	Null	1.12%	Null	19.6468	Null	3.15%	Null	28.3904	Null	4.55%	Null
SNR = 10	S1	7.0275	0.22%	2.17%	93.75%	19.3324	1.60%	4.45%	41.27%	28.5183	0.45%	6.53%	43.52%
	S2	7.0118	0	1.97%	75.89%	19.3377	1.57%	5.91%	87.62%	28.5781	0.66%	6.71%	47.47%
	S3	7.0405	0.41%	5.17%	361.61%	19.3322	1.6%	3.92%	24.44%	28.5076	0.41%	5.83%	28.13%
SNR = 0.5	S1	7.0170	0.07%	3.47%	209.82%	19.5947	0.27%	5.14%	63.17%	28.4288	0.14%	6.53%	43.52%
	S2	7.0234	0.16%	2.58%	130.36%	19.5935	0.27%	3.74%	18.73%	28.5125	0.43%	3.50%	23.08%
	S3	7.0220	0.14%	4.45%	297.32%	19.5887	0.30%	3.51%	11.43%	28.4736	0.29%	5.53%	21.54%