GPS receiver phase biases estimable in PPP-RTK networks: dynamic characterization and impact analysis

doi:10.1007/s00190-017-1085-z

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	GPS receiver phase biases estimable in PPP-RTK networks: dynamic characterization and impact analysis
	Yuan, Yunbin; Liu, Teng; Zhang, Baocheng
刊名	JOURNAL OF GEODESY
	2018-06-01
卷号	92 期号:6 页码:659-674
关键词	Global Positioning System (GPS) PPP-RTK Receiver phase bias (RPB) Integer ambiguity resolution Multipath
ISSN号	0949-7714
DOI	10.1007/s00190-017-1085-z
英文摘要	The integer ambiguity resolution enabled precise point positioning (PPP-RTK) has been proven advantageous in a wide range of applications. The realization of PPP-RTK concerns the isolation of satellite phase biases (SPBs) and other corrections from a network of Global Positioning System (GPS) reference receivers. This is generally based on Kalman filter in order to achieve real-time capability, in which proper modeling of the dynamics of various types of unknowns remains crucial. This paper seeks to gain insight into how to reasonably deal with the dynamic behavior of the estimable receiver phase biases (RPBs). Using dual-frequency GPS data collected at six colocated receivers over days 50-120 of 2015, we analyze the 30-s epoch-by-epoch estimates of L1 and wide-lane (WL) RPBs for each receiver pair. The dynamics observed in these estimates are a combined effect of three factors, namely the random measurement noise, the multipath and the ambient temperature. The first factor can be overcome by turning to a real-time filter and the second by considering the use of a sidereal filtering. The third factor has an effect only on the WL, and this effect appears to be linear. After accounting for these three factors, the low-pass-filtered, sidereal-filtered, epoch-by-epoch estimates of L1 RPBs follow a random walk process, whereas those of WL RPBs are constant over time. Properly modeling the dynamics of RPBs is vital, as it ensures the best convergence of the Kalman-filtered, between-satellite single-differenced SPB estimates to their correct values and, in turn, shortens the time-to-first-fix at user side.
资助项目	Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; National Natural Science Foundation of China[41604031] ; National Natural Science Foundation of China[41774042] ; National Natural Science Foundation of China[41574015] ; National key Research Program of China Collaborative Precision Positioning Project[2016YFB0501900] ; Natural Science Foundation of Jiangxi Province[20161BAB213087] ; K.C. Wong Education Foundation ; CAS
WOS研究方向	Geochemistry & Geophysics ; Remote Sensing
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000431873300005
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/5172]
专题	中国科学院武汉植物园
通讯作者	Zhang, Baocheng
作者单位	Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Yunbin,Liu, Teng,Zhang, Baocheng. GPS receiver phase biases estimable in PPP-RTK networks: dynamic characterization and impact analysis[J]. JOURNAL OF GEODESY,2018,92(6):659-674.
APA	Yuan, Yunbin,Liu, Teng,&Zhang, Baocheng.(2018).GPS receiver phase biases estimable in PPP-RTK networks: dynamic characterization and impact analysis.JOURNAL OF GEODESY,92(6),659-674.
MLA	Yuan, Yunbin,et al."GPS receiver phase biases estimable in PPP-RTK networks: dynamic characterization and impact analysis".JOURNAL OF GEODESY 92.6(2018):659-674.