Real-Time Modeling of Regional Tropospheric Delay Based on Multicore Support Vector Machine

Table 3

Final ZTD fitting and forecast accuracy statistical results of the five models for five consecutive days, with the final ZTD as the true value.

Modeling method	Bias^true (mm)						RMSE (mm)
	HKQT	HKSL	HKNP	HKCL	HKWS	HKST	HKQT	HKSL	HKNP	HKCL	HKWS	HKST
FP	0.27	1.49	2.83	11.06	−0.19	3.42	11.85	8.04	9.25	19.04	8.81	7.85
BP	−0.02	1.30	1.91	10.49	−0.69	3.27	11.70	8.31	9.57	19.21	8.72	7.84
SVM	0.72	1.70	2.76	12.05	−0.70	2.49	11.69	8.19	9.22	19.32	8.66	7.65
SUM	0.31	1.56	2.47	11.06	−0.61	3.05	11.75	8.18	9.35	19.16	8.75	7.76
MS	0.15	1.21	1.23	11.06	−0.02	3.05	10.95	8.02	9.18	19.02	8.68	7.58
Mean	0.29	1.45	2.24	11.14	−0.44	3.06	11.59	8.15	9.31	19.15	8.72	7.74