A Study of Smartphone GNSS Positioning Based on BDS Observations

doi:10.11871/jfdc.issn.2096-742X.2022.04.009

Abstract

Abstract:

[Objective] The Beidou navigation satellite system (BDS) is an essential national space infrastructure designed and built entirely by China. It aims to provide navigation, positioning, and timing services for users worldwide. At present, the mass low-cost intelligent equipment satellite positioning is mainly based on the US's Global Positioning Systems (GPS). The emergence of BDS can effectively reduce the dependence on GPS. Research on the application of BDS in low-cost smart devices, especially smartphones, is of great significance for the BDS industry development, economic and social services, and improvement of people's livelihood. [Methods] In this study, the quality of the raw BDS observations of the smartphones from Huawei Mate40, Mate30, P40, and P30 in the region of China was analyzed by comparing with the GPS data collected simultaneously by code minus carrier method and the positioning performance under static, low speed, medium speed, and high-speed dynamic scenarios is evaluated using single point positioning and real-time kinematic pseudo-range difference method. [Results] The results show that the number of viewed satellites, observation noise, and positioning performance of BDS satellites tracked by smartphones in China is better than that of GPS. [Conclusions] Finally, it can demonstrate that the BDS system developed by China could provide better positioning services for low-cost equipment for mass users.

Key words: android smartphone, global navigation satellite system, BeiDou navigation satellite system, single point positioning, real-time kinematic pseudo-range difference

XU Li,YUAN Yunbin. A Study of Smartphone GNSS Positioning Based on BDS Observations[J]. Frontiers of Data and Computing, 2022, 4(4): 88-102, https://cstr.cn/32002.14.jfdc.CN10-1649/TP.2022.04.009.

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名称	处理器	GNSS芯片	卫星跟踪
HP30	麒麟980	Hi1103	G(L1+L5)/R(G1)/E(E1+E5a)/C(B1I)/J(L1+L5)
HM30	麒麟990	Hi1105	G(L1+L5)/R(G1)/E(E1+E5a)/C(B1I)/J(L1+L5)
HP40	麒麟990	Hi1105	G(L1+L5)/R(G1)/E(E1+E5a)/C(B1I+B1C+B2a)/J(L1+L5)
HM40	麒麟9000	Hi1105	G(L1+L5)/R(G1)/E(E1+E5a)/C(B1I+B1C+B2a+B2b)/J(L1+L5)

		SPP				RTD
		北	东	天	平面	北	东	天	平面
HP40	G	5.75	6.51	10.41	8.68	5.49	6.36	9.72	8.40
	C	2.05	2.08	5.61	2.92	1.10	1.56	4.48	1.91
	GC	2.28	1.65	4.51	2.81	0.94	1.29	3.69	1.60
HM40	G	11.39	13.47	9.83	17.64	11.16	13.75	9.72	17.71
	C	2.44	1.71	4.46	2.98	1.20	1.27	3.91	1.74
	GC	2.22	1.38	3.74	2.61	0.94	1.01	3.19	1.38
HP30	G	3.68	2.19	5.91	4.28	1.57	1.78	5.31	2.38
	C	2.48	1.42	4.18	2.85	1.15	1.16	3.91	1.63
	GC	2.75	1.28	3.41	3.03	0.80	0.95	2.69	1.24
HM30	G	3.29	2.72	10.02	4.27	2.66	2.35	9.12	3.55
	C	1.80	1.33	4.97	2.24	1.81	1.14	4.09	2.13
	GC	1.85	1.24	4.17	2.22	1.51	1.00	3.70	1.81