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Polynomial regression calculation of the Earth's position based on millisecond pulsar timing
Tian Feng1; Tang ZhengHong1; Yan QingZeng1; Yu Yong1
2012
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume12Issue:2Pages:219
AbstractPrior to achieving high precision navigation of a spacecraft using X-ray observations, a pulsar rotation model must be built and analysis of the precise position of the Earth should be performed using ground pulsar timing observations. We can simulate time-of-arrival ground observation data close to actual observed values before using pulsar timing observation data. Considering the correlation between the Earth's position and its short arc section of an orbit, we use polynomial regression to build the correlation. Regression coefficients can be calculated using the least square method, and a coordinate component series can also be obtained; that is, we can calculate Earth's position in the Barycentric Celestial Reference System according to pulse arrival time data and a precise pulsar rotation model. In order to set appropriate parameters before the actual timing observations for Earth positioning, we can calculate the influence of the spatial distribution of pulsars on errors in the positioning result and the influence of error source variation on positioning by simulation. It is significant that the threshold values of the observation and systematic errors can be established before an actual observation occurs; namely, we can determine the observation mode with small errors and reject the observed data with big errors, thus improving the positioning result.
KeywordPRECESSION-NUTATION MODEL EPHEMERIS PACKAGE TEMPO2 POLE autonomous positioning millisecond pulsar pulsar timing regression analysis
Language英语
Funding Project[National Natural Science Foundation of China] ; [National Science Foundation of Shanghai, China]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/63118
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tian Feng,Tang ZhengHong,Yan QingZeng,et al. Polynomial regression calculation of the Earth's position based on millisecond pulsar timing[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(2):219.
APA Tian Feng,Tang ZhengHong,Yan QingZeng,&Yu Yong.(2012).Polynomial regression calculation of the Earth's position based on millisecond pulsar timing.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(2),219.
MLA Tian Feng,et al."Polynomial regression calculation of the Earth's position based on millisecond pulsar timing".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.2(2012):219.
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