BDS-3 Broadcast Ephemeris Orbit Correction Model Based on Improved PSO Combined with BP Neural Network

Table 6

C39 broadcast ephemeris orbit error-correction table.

Model	x			y			z
	Mean/m	STD/m	RMS/m	Mean/m	STD/m	RMS/m	Mean/m	STD/m	RMS/m
Real	0.385	0.473	0.470	0.316	0.396	0.393	0.881	0.993	0.986
BPNN	0.262	0.328	0.326	0.215	0.258	0.256	0.568	0.653	0.648
PSO-BPNN	0.131	0.165	0.164	0.125	0.160	0.159	0.283	0.329	0.327
IPSO-BPNN	0.109	0.135	0.134	0.116	0.149	0.148	0.226	0.271	0.269
LSTM	0.390	0.489	0.486	0.284	0.353	0.350	0.623	0.780	0.774