Results 151 to 160 of about 13,579 (182)

A fast pulse time-delay estimation method for X-ray pulsars based on wavelet-bispectrum

Optik, 2020
Abstract X-ray pulsar-based navigation technology provides real-time aerospace information for spacecraft through the received X-ray photons. The time-delay estimation accuracy of the pulse integrated profile is one of the determinants of navigation accuracy.
Yangkun Wu, Zhiwei Kang, Jin Liu
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X-ray pulsar-based navigation method using one sensor and modified time-differenced measurement

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2017
X-ray pulsar-based navigation method using one sensor (XNAVO) could fix the position of satellites by sequentially observing X-ray pulsars at the cost of loading one X-ray sensor, which drops the demand on the loading capability of satellite and is feasible for practice. However, subjected to the current research status of astronomical measure and the
Yidi Wang, Wei Zheng, Dapeng Zhang, Qinyong Zhou, Shijun Xin   +4 more
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A Novel Celestial Aided Time-Differenced Pulsar Navigation Method Against Ephemeris Error of Jupiter for Jupiter Exploration

IEEE Sensors Journal, 2019
Subjected to the current observation technology, the planetary ephemerides which are used to predict the positions of planets are not accurately known. For Jupiter exploration, ephemeris error of Jupiter will greatly degrade the performance of navigation system.
Mingzhen Gui, Xiaolin Ning, Xin Ma, Jie Zhang   +3 more
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A New Pulse Time-of-Arrival Estimation Method for X-Ray Pulsar Navigation

2015
X-ray pulsar navigation (XPNAV) is an important technology for long time and high precious spacecraft autonomous navigation. XPNAV system can offer position, velocity and accurate time navigation information for spacecraft in near-earth orbit, geostationary orbit, elliptic orbit or interplanetary orbit. XPNAV has an extremely important military use and
Qingqing Lin, Ping Shuai, Liangwei Huang
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A Method for Measurement of the Pulse Arrival Time of the Radio Emission of Pulsars in a Wideband Optoelectronic Processor

Measurement Techniques, 2017
A method of measuring the pulse arrival time of the radio emission of pulsars is described. The method is based on the use of a wideband optoelectronic processor. A special feature of the processor is a special operating mode (time delay and integration mode) of a multi-element CCD photodetector in which the dispersion of the radio emission received by
A. P. Lavrov, S. A. Molodyakov
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Differential X-Ray Pulsar Navigation Method Based on Pulse Arrival Time Difference

2022
Jingjing Gao, Haiyan Fang, Jianyu Su
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Generalized Three-Cornered Hat Method and Its Application for the Construction of an Ensemble Pulsar Time Scale

Astronomy Letters, 2022
A. E. Rodin, V. A. Fedorova
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Magnetic resonance linear accelerator technology and adaptive radiation therapy: An overview for clinicians

Ca-A Cancer Journal for Clinicians, 2022
William A Hal, X Allen Li, Daniel A Low
exaly  

Time Delay Estimation Method for X-ray Pulsars Based on The Optimal Number of Bispectral Feature Points

2023 IEEE 3rd International Conference on Computer Communication and Artificial Intelligence (CCAI), 2023
Zhiwei Huang, Hua Zong, Yujia Xie, Nuoqi Xu   +3 more
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A Fast X-ray Pulsar Time Delay Estimation Method Based on Bispectral Feature Points and Cross-Correlation

2023 42nd Chinese Control Conference (CCC), 2023
Zhiwei Huang, Hua Zong, Qian Xu, Xiaomin Li   +3 more
openaire   +1 more source