Stochastic model assessment of low-cost devices considering the impacts of multipath effects and atmospheric delays

doi:10.1016/j.measurement.2021.110619

NTSC-IR > 导航与通信研究室

	Stochastic model assessment of low-cost devices considering the impacts of multipath effects and atmospheric delays
	Yuan, Haijun 1; Zhang, Zhetao 1; He, Xiufeng 1; Li, Guihua 1; Wang, Siyao 2
	2022
发表期刊	MEASUREMENT
ISSN	0263-2241
卷号	188 页码:15
摘要	A proper stochastic model is urgently required in Global Navigation Satellite System (GNSS) data processing, whereas deficient knowledge of stochastic model often occurs, especially for low-cost devices such as low-cost receivers and smartphones. The stochastic modeling for low-cost devices considering the impacts of multipath effects and atmospheric delays is systematically studied in this paper. Firstly, two stochastic model assessment methods for low-cost devices are deduced. Secondly, the stochastic modeling including measurement precision and physical correlation for the low-cost receiver and smartphone is comprehensively investigated with singledifferenced residuals by using different baseline lengths. The results show that the measurement precisions of short baseline and medium-long baseline for the low-cost receiver are worse than zero baseline due to the systematic errors. The code measurement precisions are similar between short baseline and medium-long baseline, whereas the phase measurement precisions of medium-long baseline are larger than short baseline. Moreover, the measurement precisions of the smartphone are much worse than the low-cost receiver and the C/ N0-dependent function is more suitable for the smartphone measurements. For the physical correlation, the measurements of zero baseline are free of cross correlation, but the cross correlation can exist in short baseline and medium-long baseline. The phase measurements of the low-cost receiver are free of temporal correlation for zero baseline, but the code measurements show a certain temporal correlation. Meanwhile, the temporal correlations of the low-cost receiver can exist in short baseline and they are larger than zero baseline due to the multipath effects. In the medium-long baseline, the temporal correlations of code measurements are similar with short baseline both for the low-cost receiver and smartphone, whereas the temporal correlations of phase measurements become larger than short baseline. It can be concluded that the unmodeled errors such as multipath effects and atmospheric delays should be taken into account in the realistic stochastic model assessment including measurement precision and physical correlation for the low-cost devices. Meanwhile, different baseline lengths may consider the baseline-specific stochastic model better in realistic precise positioning.
关键词	GNSS Stochastic modeling Low-cost receiver Smartphone Unmodeled error
资助者	Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.measurement.2021.110619
关键词[WOS]	GPS ; PRECISION
语种	英语
资助项目	Natural Science Foundation of Jiangsu Province[BK20200530] ; National Natural Science Foundation of China[42004014] ; National Natural Science Foundation of China[41830110] ; China Postdoctoral Science Foundation[2020M671324] ; Jiangsu Planned Projects for Postdoctoral Research Funds[2020Z412] ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities[B210202109]
资助者	Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Jiangsu Planned Projects for Postdoctoral Research Funds ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Science and Technology Innovation Project for Overseas Students in Nanjing ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Multidisciplinary ; Instruments & Instrumentation
WOS记录号	WOS:000763545300006
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/13813
专题	导航与通信研究室
通讯作者	Zhang, Zhetao
作者单位	1.Hohai Univ, Sch Earth Sci & Engn, Nanjing 211100, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Haijun,Zhang, Zhetao,He, Xiufeng,et al. Stochastic model assessment of low-cost devices considering the impacts of multipath effects and atmospheric delays[J]. MEASUREMENT,2022,188:15.
APA	Yuan, Haijun,Zhang, Zhetao,He, Xiufeng,Li, Guihua,&Wang, Siyao.(2022).Stochastic model assessment of low-cost devices considering the impacts of multipath effects and atmospheric delays.MEASUREMENT,188,15.
MLA	Yuan, Haijun,et al."Stochastic model assessment of low-cost devices considering the impacts of multipath effects and atmospheric delays".MEASUREMENT 188(2022):15.