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20 results on '"Rao, Yongnan"'

1. Pulsar Timing Observations with Haoping Radio Telescope

Author

Luo, Jintao, Gao, Yuping, Yang, Tinggao, Zhao, Chengshi, Tong, Minglei, Rao, Yongnan, Li, Yifeng, Li, Bian, Zhu, Xingzhi, Qiao, Haihua, and Lu, Xiaochun

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We report pulsar timing observations carried out in L-band with NTSC's 40-meter Haoping Radio Telescope (HRT), which was constructed in 2014. The observations were carried out using the pulsar machine we developed. Timing observations toward millisecond pulsar J0437-4715 obtains a timing residual (r.m.s) of 397ns in the time span of 284 days. And our observations successfully detected Crab pulsar's glitch that happened on July 23rd, 2019., Comment: 10 pages, 8 figures, accepted for publication in RAA (Res. Astron. Astrophys.)

Published
2020
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3. A New Joint Tracking Method of BeiDou B1C Signal and Its Influence on Signal Quality Evaluation

Author

Hao, Zhenyuan, He, Chengyan, Guo, Ji, Lu, Xiaochun, Rao, Yongnan, Wang, Meng, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Wu, Qihui, editor, Zhao, Kanglian, editor, and Ding, Xiaojin, editor

Published
2021
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4. Advanced GNSS Spoofing Detection: Aggregated Correlation Residue Likelihood Analysis.

Author

Ji, Ning, Rao, Yongnan, Wang, Xue, and Zou, Decai

Subjects
*GLOBAL Positioning System, *MONTE Carlo method, *CORRELATORS
Abstract

Compared to conventional spoofing, emerging spoofing attacks pose a heightened threat to security applications within the global navigation satellite system (GNSS) due to their subtly designed signal structures. In response, a novel spoofing detection method entitled aggregated correlation residue likelihood analysis (A-CoRLiAn) is proposed in this study. Requiring only the addition of a pair of supplementary correlators, A-CoRLiAn harnesses correlation residues to formulate a likelihood metric, subsequently aggregating weighted decisions from all tracked satellites to ascertain the presence of spoofing. Evaluated under six diverse spoofing scenarios (including emerging challenges) in the Texas Spoofing Test Battery (TEXBAT) via Monte Carlo simulations, A-CoRLiAn yields a detection rate of 99.71%, demonstrating sensitivity, robustness, autonomy, and a lightweight architecture conducive to real-time implementation against spoofing threats. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Algorithm Research on High-Precision Tracking of Beidou-3 B1C Signal

Author

Guo, Yao, Wang, Xue, Lu, Xiaochun, Rao, Yongnan, He, Chengyan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martin, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Sun, Jiadong, editor, Yang, Changfeng, editor, and Yang, Yuanxi, editor

Published
2019
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6. Quality Assessment of Galileo E1A Signal

Author

Yang, Dejin, Rao, Yongnan, Shi, Huihui, Lu, Xiaochun, Kang, Li, Wang, Xue, He, Chengyan, Wang, Meng, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martin, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Sun, Jiadong, editor, Yang, Changfeng, editor, and Yang, Yuanxi, editor

Published
2019
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8. An Improved Abnormity Detection Method for Atomic Clock Frequency Based on Chi-Squared Statistics

Author

Song, Huijie, Dong, Shaowu, Jiang, Meng, Rao, Yongnan, Yuan, Haibo, Zhang, Hong, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Ruediger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Sun, Jiadong, editor, Yang, Changfeng, editor, and Guo, Shuren, editor

Published
2018
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17. BDS-3 RNSS technical characteristics and service performance

Author

GUO Shuren, CAI Hongliang, MENG Yinan, GENG Changjiang, JIA Xiaolin, MAO Yue, GENG Tao, RAO Yongnan, ZHANG Huijun, and XIE Xin

Subjects
technical characteristics, assessment, service performance, lcsh:Mathematical geography. Cartography, lcsh:GA1-1776, BDS-3
Abstract

A detailed description of BDS-3 including constellation design, different types of services, signal structure, coordinate and time frame, mechanics of orbit determination and time synchronous is provided. A RNSS service performance assessment parameters list is provided. It consists of parameters about time and coordinate frame, signal quality, signal in space accuracy and service performance. Tracking data is collected from stations globally distributed, and performance of BDS-3 initial service is assessed. From results, ratio bias of signal component effective power is less than 0.25 dB, S curve bias is less than 0.3 ns, position dilution of precision (PDOP) availability of current constellation is better than 85% at global level, signal-in-space ranging error is 0.48 m(RMS), signal-in-space availability reached 99.78%, signal-in-space continuity reached 99.99%, UTC offset error is 19.1 ns. All of them fulfill the design specification and requirements of BDS open service performance standard. Compared to BDS-2 satellites, current BDS-3 constellation realized global coverage and achieved a better performance in signal-in-space error, signal-in-space availability and signal-in-space continuity.

Published
2019

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