Research and progress of Beidou satellite navigation system

Sun, Fuping; Shuai, Liu; Zhu, Xiangwei; Bao-hong, Men

doi:10.1007/s11432-012-4724-2

Cited by 38 publications

(20 citation statements)

References 20 publications

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“…Simulation conditions 1: select visible BeiDou satellites with a good geometric condition [17,18] and its parameters are shown in Table 1. Six satellites are in simulation, therefore, the dimension of the Parity Residual is 2.…”

Section: Performance Comparison Of Raim and Mcraim Algorithmmentioning

confidence: 99%

A new RAIM algorithm based on multivariate cumulative sum and its improvement

Ran

Jin

Gan³

2016

Neurocomputing

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Section: Performance Comparison Of Raim and Mcraim Algorithmmentioning

confidence: 99%

A new RAIM algorithm based on multivariate cumulative sum and its improvement

Ran

Jin

Gan³

2016

Neurocomputing

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“…Binary offset subcarrier (BOC) modulation is a modern navigation signal modulation method that is widely used in global navigation satellite systems (GNSS) including Global Positioning System (GPS), Galileo, and BeiDou navigation satellite system (BDS) [1][2][3]. Compared with traditional binary phase shift keying (BPSK) modulation, BOC-modulated signal has better spectrum utilization, anti-interference capability, and theoretically higher pseudo-noise ranging performance [4].…”

Section: Introductionmentioning

confidence: 99%

High-Precision Pseudo-Noise Ranging Based on BOC Signal: Zero-Bias Mitigation Methods

Tang

et al. 2019

Applied Sciences

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In high precision applications based on binary subcarrier offset (BOC) signals, zero-bias of the digital discriminator is an error of importance. Unlike the thermal noise error, zero-bias is a fixed deviation that is challenging to eliminate by filtering in the time domain. In this paper, a statistical error analysis model for the zero-bias of BOC signal's digital phase discriminator is established. The evaluation of the zero-bias is inseparable from the spreading code sequence and the initial phase of the signal through defining the concept of statistics maximum and statistics standard deviation. Based on the zero-bias statistical error analysis model, two receiver parameter design methods, namely, the baseband signal sampling frequency and the early-late correlation interval, are proposed. The performance of the algorithm is simulated on account of the limited bandwidth, Doppler frequency offset and thermal noise. The simulation results prove that the proposed algorithm can suppress the standard deviation of zero-bias within one phase resolution, which contributes substantially to the improvement of the measurement accuracy of pseudo-noise ranging.

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“…The first phase of this system was to provide an operational service over the Asia-Pacific regions and this was completed by the end of 2012. The ongoing second phase is to establish a system consisting 5 Geostationary Earth Orbit (GEO), 3 Inclined Geo-Synchronous Orbit (IGSO) and 27 Medium Earth Orbit (MEO) satellites, and is scheduled to be completed in 2020 (Sun et al 2012). During the period of this study, there were 5 GEO, 6 IGSO and 3 MEO satellites in orbit.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a regional real-time precise positioning system based on GPS/BeiDou observations in Australia

Ding

Tan

Chen

et al. 2018

Advances in Space Research

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The performance of real-time (RT) precise positioning can be improved by utilizing observations from multiple Global Navigation Satellite Systems (GNSS) instead of one particular system. Since the end of 2012, BeiDou, independently established by China, began to provide operational services for users in the Asia-Pacific regions. In this study, an regional RT precise positioning system in Australia is developed to evaluate the performance of GPS/BeiDou observations in providing high precision positioning services for users. Fixing three hourly updated satellite orbits, RT correction messages are generated and broadcasted by processing RT observation/navigation data streams from AUSCORS at the server side. At the user side, RT PPP is realized by processing RT data streams and the RT correction messages received. RT clock offsets, for which the accuracy reached 0.07 and 0.25 ns for GPS and BeiDou, respectively, can be determined. Based on these corrections, an accuracy of 12.2, 30.0 and 45.6 cm in the North, East and Up directions was achieved for the BeiDou-only solution after 30 minutes while the GPS-only solution reached 5.1, 15.3 and 15.5 cm for the same components at the same time. A further improvement of 43.7, 36.9 and 45.0 percent in the three directions, respectively, was achieved for the combined GPS/BeiDou solution. After the initialization process, the North, East and Up positioning accuracies were 5.2, 8.1 and 17.8 cm, respectively, for the BeiDou-only solution, while 1.5, 3.0, and 4.7 cm for the GPS-only solution. However, we only noticed a 20.9% improvement in the East direction was obtained for the GPS/BeiDou solution, while no improvements in the other directions were detected. It is expected that such improvements may become bigger with the increasing accuracy of the BeiDou-only solution.

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Research and progress of Beidou satellite navigation system

Cited by 38 publications

References 20 publications

A new RAIM algorithm based on multivariate cumulative sum and its improvement

A new RAIM algorithm based on multivariate cumulative sum and its improvement

High-Precision Pseudo-Noise Ranging Based on BOC Signal: Zero-Bias Mitigation Methods

Evaluation of a regional real-time precise positioning system based on GPS/BeiDou observations in Australia

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