Results 171 to 180 of about 7,830 (211)

BeiDou Navigation Satellite System and its time scales

Metrologia, 2011
The development and current status of BeiDou Navigation Satellite System are briefly introduced. The definition and realization of the system time scales are described in detail. The BeiDou system time (BDT) is an internal and continuous time scale without leap seconds. It is maintained by the time and frequency system of the master station.
Chunhao Han, Yuanxi Yang, Zhiwu Cai
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The BeiDou navigation satellite system

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
The BeiDou Navigation Satellite System (BDS) is a global navigation satellite system to be developed independently by China. It will provide positioning, navigation, and timing services with a global coverage by 2020. It can be used for transport, weather forecast, fishing, forestry, telecommunications, hydrological monitoring, and mapping. The service
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Electrically Small Antenna for BeiDou Chinese Navigation Satellite System

2020 23rd International Microwave and Radar Conference (MIKON), 2020
A concept of electrically small antenna for BeiDou BD2 B3 Chinese navigation satellite system was developed and studied. Three main miniaturized techniques: antenna loading by using high permittivity materials, making some part of antennas virtual by using ground planes and short circuits, and optimizing geometry have been employed in the design ...
Yevhen Yashchyshyn, Dmytro Vynnyk, Volodymyr Haiduchok, Ivan Solskii, Changying Wu, Grzegorz Bogdan   +5 more
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A novel satellite selecting algorithm for BeiDou navigation satellite system

2015 International Conference on Wireless Communications & Signal Processing (WCSP), 2015
In the future, BeiDou Navigation Satellite System (BDS) will has a more widely application in various fields, and high accuracy and fast positioning will be increasingly demanded. Satellite selecting algorithm has a vital influence on positioning accuracy and speed. Therefore, optimal algorithm to select satellites is one of important steps; it will be
Wen Li, Lidong Zhu
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Vehicle information system design based on Beidou Navigation Satellite System

2015 IEEE International Conference on Information and Automation, 2015
Beidou Navigation Satellite System is one of the four major world navigation satellite systems, which is widely used in China and will be spread to the whole world in future. Thus, developing the system has great economic value and social significance.
Liquan Deng, Sipan Ye
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Analysis of system time performance in BeiDou satellite navigation system

2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum, 2015
As same as other satellite navigation systems, the time difference is considered as one of the basic observations in Beidou satellite navigation system. Therefore, an accurate and stable system time is crucial to realize the system function. Based on the inverse decomposition method, this paper analyzes the requirements of Beidou system time (BDT) on ...
Jun Lu, Ye Ren, Xiaohui Li, Ya Liu, Shougang Zhang   +4 more
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Service Continuity Assessment of Beidou Satellite Navigation System

2019
Beidou satellite navigation system (BDS) is a global satellite navigation system built by China. It will provide global coverage of all-weather, all-time, high accuracy, high reliability positioning, navigation and timing services around 2020. With the development of BDS application, users’ requirements for accuracy, integrity, availability, continuity
Shuo Wang, Rui Xue, Lei Zheng
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High efficiency power amplifier for Beidou satellite navigation system

2015 IEEE 16th International Conference on Communication Technology (ICCT), 2015
In this paper, high efficiency power amplifier for Beidou satellite navigation system is presented. The continuous Class-F PAs will be promising candidate for performances of broadband efficiency and power. Meanwhile, stability networks are also integrated into the layout to prevent low-frequency oscillations.
null Kai Wang, null Zhiqun Cheng, null Kaikai Fan, null Shuai Chen, null Guohua Liu, null Hui Wang   +5 more
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Comparsion between timing methods in BeiDou satellite navigation system

2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013
BeiDou satellite navigation provides the RDSS two-way timing and RNSS timing. In this paper, the basic principles of these two timing methods are illustrated, and the factors which affect the precision for the two methods are analyzed. Compared with the wildly used RNSS timing method, the RDSS timing method can only be used by a limited number of users,
Hai Sha, Pengpeng Li, Jianwei Zhan, Bo Xu, Gang Ou   +4 more
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Performance Monitoring of BeiDou Navigation Satellite System Ionospheric Grid

2015
The correction principle, definition and usage of the ionospheric grid of BeiDou navigation satellite system (BDS) are introduced. Based on the BDS ionospheric grid information received by BDS receivers, and compared with ionosphere delay evaluated using double-frequency measurements, the correction performance of BDS ionospheric grid in different ...
Hui Zhang, Daliang Gong, Mo Wu, He Zhao, Long Bai   +4 more
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