An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers

doi:10.3390/s21051596

	An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers
	Shen, Pengli 1,2,3; Cheng, Fang 1,2,3; Lu, Xiaochun 1,2,3; Xiao, Xia 1,2,3; Ge, Yulong 1,2,3
刊名	SENSORS
	2021-03-01
卷号	21 期号:5 页码:15
关键词	BDS-3 tropospheric delay positioning performance precise point positioning (PPP) orbit comparison clock differences analysis centers
DOI	10.3390/s21051596
英文摘要	A quality evaluation of precise products for BDS-3 constellations is presented for the first time in this contribution. Then, the tropospheric delay retrieval and positioning performance of BDS-3 precise point positioning (PPP) solutions using the precise products (gbm, wum, iac, sha, cnt) with observations from 24 stations from DOY 280 to 317 in 2020 was comprehensively investigated. The orbit comparisons present consistencies of 0.09-0.22 m for the C19-C37 satellites and of 0.5-1.2 m for the C38-C46 satellites among the final products. The standard deviation (STD) values of the clock differences of iac showed the best agreement with those of gbm, followed by wum, sha. The clock differences performance of cnt was the worst. For BDS-3 PPP solutions with five Analysis centers (ACs) products, the median convergence times of static PPP mode incorporating the gbm, wum, iac, sha, and cnt products were 31.0, 33.5, 34.5, 37.8, and 72.0 min, respectively; the median convergence times of kinematic PPP model incorporating the same products were 40.5, 41.0, 50.5, 55.0, and 94.0 min, respectively. The positioning accuracies in the static and kinematic modes were approximately 1-4 cm, 2-6 cm in the horizontal and vertical components, respectively. With the final products in kinematic mode, the performance of PPP with real-time products (cnt) is poorer than all PPP with final products. The median of ZTD accuracies of the five products gbm, wum, iac, sha, and cnt were 7.84, 7.58, 7.04, 7.19, and 10.1 mm, respectively, and the accuracy differences were very small among five AC products (gbm, wum, iac, sha).
资助项目	West Light Foundation of The Chines Academy of Sciences[XAB2018B20] ; K.C. Wong Education Foundation
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000628544900001
资助机构	West Light Foundation of The Chines Academy of Sciences ; West Light Foundation of The Chines Academy of Sciences ; K.C. Wong Education Foundation ; K.C. Wong Education Foundation ; West Light Foundation of The Chines Academy of Sciences ; West Light Foundation of The Chines Academy of Sciences ; K.C. Wong Education Foundation ; K.C. Wong Education Foundation ; West Light Foundation of The Chines Academy of Sciences ; West Light Foundation of The Chines Academy of Sciences ; K.C. Wong Education Foundation ; K.C. Wong Education Foundation ; West Light Foundation of The Chines Academy of Sciences ; West Light Foundation of The Chines Academy of Sciences ; K.C. Wong Education Foundation ; K.C. Wong Education Foundation
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10735]
专题	中国科学院国家授时中心
通讯作者	Shen, Pengli
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Precise Positioning & Timing Technol, Xian 710600, Peoples R China
推荐引用方式 GB/T 7714	Shen, Pengli,Cheng, Fang,Lu, Xiaochun,et al. An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers[J]. SENSORS,2021,21(5):15.
APA	Shen, Pengli,Cheng, Fang,Lu, Xiaochun,Xiao, Xia,&Ge, Yulong.(2021).An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers.SENSORS,21(5),15.
MLA	Shen, Pengli,et al."An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers".SENSORS 21.5(2021):15.