Noncontact Detection and Analysis of Respiratory Function Using Microwave Doppler Radar

Table 2

Polynomial modelling and DTW performance evaluation.

(a) Polynomial order evaluation

Order	Inhalation		Exhalation
	RMSE	Corr	RMSE	Corr
1		0.9912		0.9918
2		0.9921		0.9919
3		0.9998		0.9999
4		1		1
5		1		1

(b) Performance evaluation of random breathing component with selected model

Breathing component	Polynomial model	MSE	Corr	Class
Fast inhalation	Normal		0.933	Fast
	Fast		0.989
Normal inhalation	Normal		0.999	Normal
	Fast		0.954
Fast exhalation	Normal		0.972	Fast
	Fast		0.999
Normal exhalation	Normal		0.999	Normal
	Fast		0.958