Efficient Method of Firing Angle Calculation for Multiple Launch Rocket System Based on Polynomial Response Surface and Kriging Metamodels

Table 8

Effect of correlation function of Kriging on prediction accuracy of maximum range.

Correlation function	MAE (m)	MRE (%)	RMSE (m)
Cubic	61.45	0.025	11.53
Exp	363.70	0.124	59.98
Gauss	135.14	0.057	31.80
Linear	372.36	0.127	60.67
Matern32	286.50	0.104	46.79
Matern52	146.48	0.061	33.42
Spherical	351.18	0.147	59.27
Spline	50.56	0.021	10.56