theapplicationofcointegrationtheoryinensemblepulsartimescalealgorithm

NTSC-IR > 守时理论与方法研究室

	theapplicationofcointegrationtheoryinensemblepulsartimescalealgorithm
	Gao Feng; Tong Minglei; Gao Yuping; Yang Tinggao; Zhao Chengshi
	2019
发表期刊	researchinastronomyandastrophysics
ISSN	1674-4527
卷号	19 期号:7
摘要	Employing multiple pulsars and using an appropriate algorithm to establish ensemble pulsar timescale can reduce the influences of various noises on the long-term stability of pulsar timescale, compared to a single pulsar. However, due to the low timing precision and significant red noises of some pulsars, their participation in the construction of ensemble pulsar timescale is often limited. Inspired by the principle of solving non-stationary sequence modeling using co-integration theory, we put forward an algorithm based on co-integration theory to establish an ensemble pulsar timescale. It is found that this algorithm can effectively suppress some noise sources if a co-integration relationship between different pulsar data exists. Different from the classical weighted average algorithm, the co-integration method provides the chance for a pulsar with significant red noises to be included in the establishment of an ensemble pulsar timescale. Based on data from the North American Nanohertz Observatory for Gravitational Waves(NANOGrav), we found that the co-integration algorithm can successfully reduce several timing noises and improve the long-term stability of the ensemble pulsar timescale.
语种	英语
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/9694
专题	守时理论与方法研究室
作者单位	中国科学院国家授时中心
第一作者单位	中国科学院国家授时中心
推荐引用方式 GB/T 7714	Gao Feng,Tong Minglei,Gao Yuping,et al. theapplicationofcointegrationtheoryinensemblepulsartimescalealgorithm[J]. researchinastronomyandastrophysics,2019,19(7).
APA	Gao Feng,Tong Minglei,Gao Yuping,Yang Tinggao,&Zhao Chengshi.(2019).theapplicationofcointegrationtheoryinensemblepulsartimescalealgorithm.researchinastronomyandastrophysics,19(7).
MLA	Gao Feng,et al."theapplicationofcointegrationtheoryinensemblepulsartimescalealgorithm".researchinastronomyandastrophysics 19.7(2019).