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Progress of BeiDou time transfer at NTSC
Metrologia, 2018Time transfer using global navigation satellite system (GNSS) is a primary method of remote atomic clock comparisons. As of today, there are four operational GNSS systems, namely GPS, GLONASS, Galileo and BeiDou Navigation Satellite System (BDS or BeiDou). All of them can continuously provide position, navigation and time services.
Wei Guang +5 more
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BeiDou Time Transfer Between PTB and NTSC
The Precise Time and Time Interval Systems and Applications Meeting, 2018GNSS time transfer is a primary method for remote atomic clock comparisons. There are four global satellite navigation systems in operation, named GPS, GLONASS, Galileo and BeiDou. To guarantee the precision, the accuracy and the robustness of Coordinated Universal Time (UTC) generation, multi-techniques strategy has been encouraged by Consultative ...
Wenjun Wu +5 more
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Doppler-Aided Algorithm for BeiDou Position
2013Real-time GNSS positioning rely mainly on pseudorange and carrier-phase. The pseudorange is not accurate because of a lot of noise and interference in environment. High-precision carrier-phase used to smooth pseudorange. While, when cycle slip occurs, the carrier-phase measurement is bias.
Dengyun Lei, Weijun Lu, DunShan Yu
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Measurements of Beidou Antenna for Iridium Communication
2019 IEEE 2nd International Conference on Electronic Information and Communication Technology (ICEICT), 2019With the increasing demand for large-scale data transmission and data security in deep sea observation and detection, Iridium and Beidou dual-mode communication has become the main approach in the field of China’s ocean observation and detection. However, the size and weight of the two antennas are not easy to reduce, which presents a challenge to the ...
Tingting Lyu +3 more
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Asynchronous and time-differenced RTK for ocean applications using the BeiDou short message service
Journal of Geodesy, 2023Zhiteng Zhang +4 more
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Analysis of preliminary results from distributed autonomous timekeeping on Beidou-3 satellites
GPS Solutions, 2023Wei Zhou +6 more
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BeiDou-1 Signal Simulation for Passive Location
2012As BeiDou-1 (BD-1) receivers are widely applied in communication, power and defense construction areas nowadays, the technology of assessing receivers based on simulators attracts more attention. However, due to the particular retransmission characteristics in BD-1 and the lagging research on relatively signal simulator, the simulator without ephemeris
Jianwei Zhan +4 more
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Viterbi Decoder Design of Beidou RDSS Receiver
Applied Mechanics and Materials, 2013Firstly, the convolutional encoding with constraint length of 7 is used as the channel coding scheme in Beidou RDSS system. In addition, in receiver design Viterbi Decoder serves as the decoder of convolutional encoding. Finally, the optimized design of hardware construction in traditional Viterbi compared with that in decoder is introduced to reduce ...
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Characteristics Analysis of BeiDou Melbourne-Wübbena Combination
2015Melbourne-Wubbena (MW) combination, which has characteristics of geometry-free and ionosphere-free (first-order), has been often used for cycle slip detection and facilitating ambiguity resolution in GNSS dual-frequency data processing. The constellation of BeiDou Navigation Satellite System (BDS) is different from that of GPS.
Xiyang He, Xiaohong Zhang
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