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

Table 7

Broadcast ephemeris orbit error-correction table.

Satellite type	PRN	RMS/m					Improvement rate
		Real	LSTM	BPNN	PSO-BPNN	IPSO-BPNN	LSTM	BPNN	PSO-BPNN	IPSO-BPNN
MEO	C19	0.791	0.658	0.518	0.242	0.205	16.90%	34.6%	69.5%	74.1%
	C20	0.810	0.682	0.533	0.260	0.214	15.80%	34.2%	67.9%	73.6%
	C21	0.818	0.705	0.531	0.259	0.145	13.80%	35.1%	68.3%	82.3%
	C22	0.814	0.659	0.534	0.246	0.156	19.00%	34.3%	69.7%	80.8%
	C23	0.854	0.718	0.560	0.258	0.137	16.00%	34.5%	69.8%	84.0%
	C24	0.849	0.706	0.562	0.277	0.143	16.80%	33.8%	67.3%	83.2%
	C25	0.737	0.63	0.480	0.322	0.213	14.50%	34.9%	56.3%	71.1%
	C26	0.714	0.695	0.467	0.221	0.119	2.70%	34.6%	69.0%	83.4%
	C27	0.722	0.639	0.467	0.224	0.161	11.50%	35.3%	68.9%	77.7%
	C28	0.724	0.63	0.473	0.341	0.123	12.90%	34.7%	52.9%	83.1%
	C29	0.723	0.616	0.465	0.339	0.198	14.80%	35.7%	53.1%	72.6%
	C30	0.674	0.663	0.438	0.211	0.181	1.60%	35.0%	68.7%	73.1%
	C32	0.797	0.737	0.515	0.301	0.130	7.60%	35.3%	62.2%	83.7%
	C33	0.809	0.641	0.527	0.246	0.145	20.70%	34.8%	69.6%	82.1%
	C34	0.702	0.642	0.458	0.422	0.120	8.50%	34.8%	39.9%	82.9%
	C35	0.718	0.574	0.466	0.222	0.151	20.00%	35.0%	69.1%	79.0%
	C36	0.744	0.641	0.484	0.367	0.198	13.80%	34.9%	50.6%	73.4%
	C37	0.773	0.701	0.516	0.246	0.135	9.30%	33.2%	68.3%	82.5%
	C41	0.594	0.525	0.386	0.184	0.106	11.60%	35.0%	69.1%	82.1%
	C42	0.602	0.485	0.394	0.221	0.152	19.40%	34.5%	63.3%	74.7%
	C43	0.673	0.596	0.436	0.212	0.118	11.50%	35.2%	68.6%	82.4%
	C44	0.729	0.625	0.480	0.321	0.172	14.30%	34.1%	56.0%	76.4%
	C45	0.773	0.694	0.507	0.239	0.198	10.30%	34.4%	69.1%	74.4%
IGSO	C38	0.863	0.814	0.555	0.281	0.121	5.60%	35.7%	67.4%	86.0%
	C39	0.621	0.469	0.422	0.211	0.123	24.50%	32.0%	65.9%	80.2%
	C40	0.618	0.606	0.413	0.209	0.122	2.00%	33.1%	66.1%	80.2%