Test of pulsar navigation with POLAR on TG-2 space station

Zheng, S.; Ge, M. Y.; Han, Danxiang; Wang, Wenbin; Chen, Yong; Lu, Fangjun; Bao, Tianwei; Chai, Jun; Dong, Yongwei; Feng, MingZi; He, J.; Huang, Y.; Kong, M. N.; Li, Han-Cheng; Li, Lü; Li, Zheng-Heng; Liu, Jiang-Tao; Liu, Xin; Shi, Hongyuan; Song, Lulu; Sun, Jianchao; Wang, RuiJie; Wang, Yuan-Hao; Wen, X. Y.; Wu, B. Y.; Xiao, H.; Xiong, S. L.; Xu, Hong-He; Xu, Min; Zhang, Juan; Zhang, Laiyu; Zhang, Li; Zhang, Xiaofeng; Yongjie, Zhang; Zhao, Y.; Zhang, Shuang‐Nan

doi:10.1360/sspma2017-00080

Cited by 34 publications

(18 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the calculated clock frequency f , the absolute time of each event is computed by equation t abs = (t loc − t 1 )/f + T 1 , where t loc is the local timestamp of the event and t abs is the reconstructed absolute GPS time of the event in the unit of second. Using the absolute time of each event reconstructed with the GPS-timestamp pairs and taking the temperature effect into account, the study of evolution of the spin frequency for the Crab pulsar as presented in ZHENG et al 2017 shows that the spin frequency evolution result for the Crab pulsar achieved using POLAR's data is consistent with that using Fermi's data, which means that the time system of POLAR is accurate and stable. ZHENG et al 2017 also demonstrates that the sigma of the time residuals for the Crab pulsar observed by POLAR is 84µs, which includes both the error in the reconstructed absolute time for POLAR and also the non-zero red noise of the spin frequency for the Crab pulsar.…”

Section: Absolute Time Reconstructionmentioning

confidence: 78%

Observation data pre-processing and scientific data products generation of POLAR

Li¹,

Sun²,

Song³

et al. 2019

Res. Astron. Astrophys.

Self Cite

View full text Add to dashboard Cite

POLAR is a compact space-borne detector initially designed to measure the polarization of hard X-rays emitted from Gamma-Ray Bursts in the energy range 50-500 keV. This instrument was launched successfully onboard the Chinese space laboratory Tiangong-2 (TG-2) on 2016 September 15. After being switched on a few days later, tens of gigabytes of raw detection data were produced in-orbit by POLAR and transferred to the ground every day. Before the launch date, a full pipeline and related software were designed and developed for the purpose of quickly pre-processing all the raw data from POLAR, which include both science data and engineering data, then to generate the high level scientific data products that are suitable for later science analysis. This pipeline has been successfully applied for use by the POLAR Science Data Center in the Institute of High Energy Physics (IHEP) after POLAR was launched and switched on. A detailed introduction to the pipeline and some of the core relevant algorithms are presented in this paper.

show abstract

Section: Absolute Time Reconstructionmentioning

confidence: 78%

Observation data pre-processing and scientific data products generation of POLAR

Li¹,

Sun²,

Song³

et al. 2019

Res. Astron. Astrophys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the method used in [22] can be applied. The Crab pulsar navigation method test with POLAR data has been preliminarily studied and proved to be quite promising [23], and more work can be done on this. Besides, the potential for polarization analysis of the Crab pulsar with POLAR data is also expected to be performed after finalizing current studies on Crab spectral measurements using the POLAR data.…”

Section: Expectation On Future Workmentioning

confidence: 99%

Overview of the POLAR mission

Sun¹

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

Self Cite

View full text Add to dashboard Cite

“…In 2018, the United States announced their SEXTANT (Station Explorer for X-ray Timing and Navigation Technology) flight experiments with a position error less than 10 km [13]. In addition, China also verified the feasibility of XNAV, in principle, using real data from TG-2 (Tiangong-2) Spacelab and the Insight-HXMT (Insight-Hard X-ray Modulation Telescope) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Stellar Angle-Aided Pulse Phase Estimation and Its Navigation Application

Wang

Zheng

et al. 2021

Aerospace

View full text Add to dashboard Cite

X-ray pulsar-based navigation (XNAV) is a promising autonomous navigation method, and the pulse phase is the basic measurement of XNAV. However, the current methods for estimating the pulse phase for orbiting spacecraft have a high computational cost. This paper proposes a stellar angle measurement-aided pulse phase estimation method for high Earth orbit (HEO) spacecraft, with the aim of reducing the computational cost of pulse phase estimation in XNAV. In this pulse phase estimation method, the effect caused by the orbital motion of the spacecraft is roughly removed by stellar angle measurement. Furthermore, a deeply integrated navigation method using the X-ray pulsar and the stellar angle is proposed. The performances of the stellar angle measurement-aided pulse phase estimation method and the integrated navigation method were verified by simulation. The simulation results show that the proposed pulse phase estimation method can handle the signals of millisecond pulsars and achieve pulse phase estimation with lower computational cost than the current methods. In addition, for HEO spacecraft, the position error of the proposed integrated navigation method is lower than that of the stellar angle navigation method.

show abstract

Test of pulsar navigation with POLAR on TG-2 space station

Cited by 34 publications

References 10 publications

Observation data pre-processing and scientific data products generation of POLAR

Observation data pre-processing and scientific data products generation of POLAR

Overview of the POLAR mission

Stellar Angle-Aided Pulse Phase Estimation and Its Navigation Application

Contact Info

Product

Resources

About