Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data
文献类型：期刊论文
| 作者 | Deng, Yongtao1,2; Jin, Shuanggen2,3 |
| 刊名 | UNIVERSE
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 8期号:7页码:18 |
| 关键词 | X-ray pulsar navigation pulsar timing JPL DE ephemerides XPNAV-I satellite orbit determination |
| DOI | 10.3390/universe8070360 |
| 英文摘要 | Solar system ephemeris is very important for pulsar timing and navigation. In order to explore the effect of different precision ephemerides on X-ray pulsar timing and navigation, the differences between timing and navigation results with four JPL Development Ephemerides based on the data of X-ray pulsar navigation-I (XPNAV-I) were compared and analyzed in this paper. For pulsar timing, the ephemeris has a systematic effect on time scale conversion (nanosecond difference), light-travel delay (millisecond difference) and timing residuals (microsecond difference), and the pulse profile phase can reflect the systematic deviation caused by different ephemerides in the timing calculation. The timing results show that it is necessary to compile the pulsar timing model based on the newer ephemeris. For navigation, based on the significant enhancement of pulse profile with orbit-dynamic (SEPO), the absolute error between simulation orbit and actual orbit is less than 2 km for each ephemeris, and the differences between simulation orbits are less than 1 km. The orbit position accuracy calculated by the ephemeris used in pulsar timing parameter calculation is the highest (DE200 in this paper), which explains the necessity of using a unified ephemeris in the calculation of timing and navigation with satisfying its internal self-consistency. |
| 资助项目 | National Key Research and Development Program[2021YFA0716100] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000831854600001 |
| 资助机构 | National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/87880]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Jin, Shuanggen |
| 作者单位 | 1.Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200444, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Henan Polytech Univ, Sch Surveying & Land Informat Engn, Jiaozuo 454000, Henan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Yongtao,Jin, Shuanggen. Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data[J]. UNIVERSE,2022,8(7):18. |
| APA | Deng, Yongtao,&Jin, Shuanggen.(2022).Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data.UNIVERSE,8(7),18. |
| MLA | Deng, Yongtao,et al."Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data".UNIVERSE 8.7(2022):18. |
入库方式： OAI收割
来源：国家天文台
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