Space/ground based pulsar timescale for comprehensive PNT system

doi:10.7498/aps.70.20210288

	Space/ground based pulsar timescale for comprehensive PNT system
	Zhou Qing-Yong 1,2,3; Wei Zi-Qing 1,2; Yan Lin-Li 4; Sun Peng-Fei 5; Liu Si-Wei 1,2; Feng Lai-Ping 1,2; Jiang Kun 6; Wang Yi-Di 7; Zhu Yong-Xing 1,2; Liu Xiao-Gang 1,2
刊名	ACTA PHYSICA SINICA
	2021-07-05
卷号	70 期号:13 页码:13
关键词	positioning navigation timing pulsar time atomic time pulse TOA
ISSN号	1000-3290
DOI	10.7498/aps.70.20210288
英文摘要	The comprehensive positioning navigation timing (PNT) system in China is a multi-source information fusion system with BeiDou navigation satellite system (BDS) as a core. The high-precision millisecond pulsar timing can enhance the long-term stability of the BDS time benchmark and maintain a space-time benchmark for future deep-space users. In this paper, a ground-based pulsar time service system is proposed for detecting and improving the time benchmark of BDS. The preliminary designs and functions of the system are outlined. At the same time, the method of establishing space and ground-based pulsar time is studied. The ground radio timing data from the international pulsar timing array (IPTA), the X-ray timing data from the neutron star interior composition explorer (NICER) in space, and the simulation data from the 500-meter spherical radio telescope (five-hundred-meter aperture spherical radio telescope, FAST) for three millisecond pulsars are used to analyze the stability of ground/space-based pulsar time. The research results are as follows. The annual stability of the PSR J0437-4715 ground-based pulsar time based on IPTA data is 3.30 x 10(-14), and the 10-year stability is 1.23 x 10(-15), respectively. The existence of pulsar red noise can reduce the time stability of the pulsar. The annual stability of the PSR J1939+2134 ground-based pulsar time is 6.51 x 10(-12). We find that the accuracy of the pulse time of Arrival(TOA) is an important factor that restricts the stability of space-based pulsar time. Based on NICER space X-ray timing data, the stability of the pulsar time for PSR J1824-2452A is 1.36 x 10(-13) in one year. Finally, the simulation analysis of the FAST's data without considering the influence of red noise is completed, and we find that the PSR J1939+2134 ground-based pulsar time based on the FAST has an annual stability of 2.55 x 10(-15), a 10-year stability of 1.39 x 10(-16), and a 20-year stability of 5.08 x 10(-17). It demonstrates that the powerful pulsar observation capability of FAST will help to improve the accuracy of ground-based pulsar time and enhance the long-term stability of the comprehensive PNT system time benchmark in China.
资助项目	State Key Development Program for Basic Research of China[2020YFB0505800] ; National Science Foundation of China[42004004] ; National Science Foundation of China[42074006] ; National Science Foundation of China[11903001] ; Key Research Foundation of Education Ministry of Anhui Province[KJ2019A0787] ; Doctor Foundation of Anhui Jianzhu University 2019[2019QDZ14] ; National Social Science Foundation of China[2020-SKJJ-C-043]
WOS关键词	MILLISECOND PULSARS
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000672791600040
资助机构	State Key Development Program for Basic Research of China ; State Key Development Program for Basic Research of China ; National Science Foundation of China ; National Science Foundation of China ; Key Research Foundation of Education Ministry of Anhui Province ; Key Research Foundation of Education Ministry of Anhui Province ; Doctor Foundation of Anhui Jianzhu University 2019 ; Doctor Foundation of Anhui Jianzhu University 2019 ; National Social Science Foundation of China ; National Social Science Foundation of China ; State Key Development Program for Basic Research of China ; State Key Development Program for Basic Research of China ; National Science Foundation of China ; National Science Foundation of China ; Key Research Foundation of Education Ministry of Anhui Province ; Key Research Foundation of Education Ministry of Anhui Province ; Doctor Foundation of Anhui Jianzhu University 2019 ; Doctor Foundation of Anhui Jianzhu University 2019 ; National Social Science Foundation of China ; National Social Science Foundation of China ; State Key Development Program for Basic Research of China ; State Key Development Program for Basic Research of China ; National Science Foundation of China ; National Science Foundation of China ; Key Research Foundation of Education Ministry of Anhui Province ; Key Research Foundation of Education Ministry of Anhui Province ; Doctor Foundation of Anhui Jianzhu University 2019 ; Doctor Foundation of Anhui Jianzhu University 2019 ; National Social Science Foundation of China ; National Social Science Foundation of China ; State Key Development Program for Basic Research of China ; State Key Development Program for Basic Research of China ; National Science Foundation of China ; National Science Foundation of China ; Key Research Foundation of Education Ministry of Anhui Province ; Key Research Foundation of Education Ministry of Anhui Province ; Doctor Foundation of Anhui Jianzhu University 2019 ; Doctor Foundation of Anhui Jianzhu University 2019 ; National Social Science Foundation of China ; National Social Science Foundation of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10672]
专题	中国科学院国家授时中心
通讯作者	Yan Lin-Li
作者单位	1.State Key Lab Geog Informat Engn, Xian 710054, Peoples R China 2.Xian Inst Surveying & Mapping, Xian 710054, Peoples R China 3.Univ Informat Engn, Sch Geospatial Informat, Zhengzhou 450052, Peoples R China 4.Anhui Jianzhu Univ, Sch Math & Phys, Hefei 230601, Peoples R China 5.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 6.Beijing Inst Commun & Tracking Technol, Beijing 100090, Peoples R China 7.Natl Univ Def Technol, Coll Aerosp & Mat Engn, Changsha 410073, Peoples R China 8.Acad Armored Force Engn, Dept Fdn, Beijing 100072, Peoples R China
推荐引用方式 GB/T 7714	Zhou Qing-Yong,Wei Zi-Qing,Yan Lin-Li,et al. Space/ground based pulsar timescale for comprehensive PNT system[J]. ACTA PHYSICA SINICA,2021,70(13):13.
APA	Zhou Qing-Yong.,Wei Zi-Qing.,Yan Lin-Li.,Sun Peng-Fei.,Liu Si-Wei.,...&He Zhen-Ni.(2021).Space/ground based pulsar timescale for comprehensive PNT system.ACTA PHYSICA SINICA,70(13),13.
MLA	Zhou Qing-Yong,et al."Space/ground based pulsar timescale for comprehensive PNT system".ACTA PHYSICA SINICA 70.13(2021):13.