Research on GNSS-R Tide Height Inversion Method Based on BDS-3/GPS Multi-Frequency Data

Mei Ming; Dongjie Yue; Shaolin Zhu

doi:10.3788/LOP213017

Journals >Laser & Optoelectronics Progress >Volume 60 >Issue 7 >Page 0701003 > Article

Laser & Optoelectronics Progress
Vol. 60, Issue 7, 0701003 (2023)

Research on GNSS-R Tide Height Inversion Method Based on BDS-3/GPS Multi-Frequency Data

Mei Ming^*, Dongjie Yue, and Shaolin Zhu

Author Affiliations

School of Earth Science and Engineering, Hohai University, Nanjing 211100, Jiangsu, China

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DOI: 10.3788/LOP213017 Cite this Article Set citation alerts

Mei Ming, Dongjie Yue, Shaolin Zhu. Research on GNSS-R Tide Height Inversion Method Based on BDS-3/GPS Multi-Frequency Data[J]. Laser & Optoelectronics Progress, 2023, 60(7): 0701003 Copy Citation Text

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Fig. 1. GNSS-R inversion of tide surface height

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Fig. 2. Flow chart of tide level inversion from SNR

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Fig. 3. Relationship between GPS inversion accuracy in different frequency bands and PROB. (a) GPS S1C; (b) GPS S2W; (c) GPS S1X; (d) GPS S5X

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Fig. 4. GPS tide level inversion result using scheme 1

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Fig. 5. GPS tide level inversion result using scheme 2

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Satellite system	Frequency band	Frequency /MHz	Channel /code	Type of SNR
	L1	1575.420	C/A	S1C
GPS	L2	1227.600	Z tracking and similar （AS on）	S2W
GPS	L2	1227.600	L2C（M+L）	S2X
BDS-3	L3	1176.450	I+Q	S5X
	B1	1561.098	I	S1I
	B2	1207.140	I	S7I
	B2a	1176.450	D+P	S5X
	B1C	1575.420	D+P	S1X
	B3	1268.520	I	S6I

Table 1. MAYG station GPS and BDS-3 satellite system data type

Frequency band	DOY
Frequency band	333 days	334 days	335 days	336 days	337 days	5 days
GPS S2X	0.5732	0.5436	0.5829	0.5008	0.4755	0.5373
GPS S5X	0.5835	0.5760	0.5750	0.4741	0.4459	0.5348
BDS S5X	0.5699	0.5759	0.5447	0.7937	0.7401	0.6512

Table 2. Inversion accuracy of GPS S2X, S5X, and BDS S5X

Frequency band	Parameter	DOY					5 days
Frequency band	Parameter	333	334	335	336	337	5 days
GPS S1C	Number of tide level inversion results	13	10	10	12	13	58
GPS S1C	RMSE /m	0.9330	1.0078	0.7564	1.0752	0.5612	0.8824
GPS S2W	Number of tide level inversion results	23	19	21	24	23	110
GPS S2W	RMSE /m	0.8161	1.0837	0.6990	0.8347	0.6480	0.8217
BDS S1X	Number of tide level inversion results	20	19	18	17	20	94
BDS S1X	RMSE /m	1.7340	1.5914	1.5013	1.6052	1.9647	1.6943
BDS S2I	Number of tide level inversion results	33	27	30	29	31	150
BDS S2I	RMSE /m	0.7671	1.0451	0.9666	1.0393	1.1435	0.9960
BDS S6I	Number of tide level inversion results	29	17	27	21	24	118
BDS S6I	RMSE /m	1.2424	1.4895	1.4975	1.4742	1.3968	1.4127
BDS S7I	Number of tide level inversion results	28	17	20	17	23	105
BDS S7I	RMSE /m	1.5133	1.7255	1.4970	1.3976	1.4962	1.5252

Table 3. Statistics of inversion results of GPS S1C and S2W and BDS S1X, S2I, S6I, and S7I frequency band using scheme 1

Frequency band	Number of tide level inversion results	RMSE /m
GPS S1C	19	1.0108
GPS S2W	60	0.7288
GPS S2X	98	0.5410
GPS S5X	98	0.5143
GPS	275	0.6205
BDS S1X	71	1.6384
BDS S2I	52	0.9340
BDS S5X	107	0.5618
BDS S6I	42	1.3413
BDS S7I	34	1.2940
BDS	306	1.1465

Table 4. Statistical of 5-day inversion results using 9 frequency bands of BDS and GPS in scheme 2

Frequency band	Parameter	DOY					5 days
Frequency band	Parameter	333	334	335	336	337	5 days
GPS S1C	Number of tide level inversion results	30	32	31	31	31	155
GPS S1C	RMSE /m	0.6267	0.6599	0.7441	0.5843	0.6135	0.6482
GPS S2W	Number of tide level inversion results	29	32	30	31	30	152
GPS S2W	RMSE /m	0.6842	0.7076	0.6433	0.5235	0.5921	0.6336
BDS S1X	Number of tide level inversion results	28	30	30	29	29	146
BDS S1X	RMSE /m	0.7394	0.6926	0.5184	0.6711	0.6362	0.6546
BDS S2I	Number of tide level inversion results	49	48	51	52	54	254
BDS S2I	RMSE /m	0.7526	0.5366	0.6235	0.7656	0.5627	0.6550
BDS S6I	Number of tide level inversion results	49	49	52	49	54	253
BDS S6I	RMSE /m	0.7482	0.5995	0.7720	0.7442	0.8056	0.7391
BDS S7I	Number of tide level inversion results	49	48	51	49	53	250
BDS S7I	RMSE /m	0.7922	0.5765	0.5556	0.7489	0.6983	0.6805

Table 5. Statistics of inversion results of GPS S1C and S2W and BDS S1X, S2I, S6I, and S7I frequency band using scheme 3

Mei Ming, Dongjie Yue, Shaolin Zhu. Research on GNSS-R Tide Height Inversion Method Based on BDS-3/GPS Multi-Frequency Data[J]. Laser & Optoelectronics Progress, 2023, 60(7): 0701003

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