Initial assessment of the COMPASS/BeiDou-2 regional navigation satellite system

Montenbruck, Oliver; Hauschild, André; Steigenberger, Peter; Hugentobler, Urs; Teunissen, Peter; Nakamura, Shigenari

doi:10.1007/s10291-012-0272-x

Cited by 327 publications

(194 citation statements)

References 17 publications

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“…However, this is expected to be improved with new BDS satellites launched into orbit and a more densified tracking network in the near future [19,38]. In addition, although the RMS values of the along-track and cross-track components are larger than those of the radial component, the positioning users on the Earth's surface are less sensitive to errors in along-track and cross-track directions than to those in the radial direction; the orbit errors in the along-track and cross-track directions may therefore have a less significant impact on the accuracy of user positioning [24].…”

Section: Discussionmentioning

confidence: 99%

Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service

Wang

et al. 2018

Remote Sensing

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Precise Point Positioning (PPP) is a popular technology for precise applications based on the Global Navigation Satellite System (GNSS). Multi-GNSS combined PPP has become a hot topic in recent years with the development of multiple GNSSs. Meanwhile, with the operation of the real-time service (RTS) of the International GNSS Service (IGS) agency that provides satellite orbit and clock corrections to broadcast ephemeris, it is possible to obtain the real-time precise products of satellite orbits and clocks and to conduct real-time PPP. In this contribution, the real-time multi-GNSS orbit and clock corrections of the CLK93 product are applied for real-time multi-GNSS PPP processing, and its orbit and clock qualities are investigated, first with a seven-day experiment by comparing them with the final multi-GNSS precise product 'GBM' from GFZ. Then, an experiment involving real-time PPP processing for three stations in the Multi-GNSS Experiment (MGEX) network with a testing period of two weeks is conducted in order to evaluate the convergence performance of real-time PPP in a simulated kinematic mode. The experimental result shows that real-time PPP can achieve a convergence performance of less than 15 min for an accuracy level of 20 cm. Finally, the real-time data streams from 12 globally distributed IGS/MGEX stations for one month are used to assess and validate the positioning accuracy of real-time multi-GNSS PPP. The results show that the simulated kinematic positioning accuracy achieved by real-time PPP on different stations is about 3.0 to 4.0 cm for the horizontal direction and 5.0 to 7.0 cm for the three-dimensional (3D) direction.

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Section: Discussionmentioning

confidence: 99%

Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service

Wang

et al. 2018

Remote Sensing

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“…Code DIF is represented as ∆∇P IF1 − ∆∇P IF2 , and phase DIF is represented as ∆∇Φ IF1 − ∆∇Φ IF2 after the integer ambiguities on ∆∇Φ IF1 and ∆∇Φ IF2 have been correctly removed. The DIF can eliminate the geometric term, ionospheric delay, and tropospheric delays, and thus it only reflects a weighted sum of triple-frequency DD noise [12]. We computed the DIF values of all DD pairs for all epochs over each baseline and then computed the root mean square (RMS) of the DIF values.…”

Section: Experimental Analysesmentioning

confidence: 99%

“…delays, and thus it only reflects a weighted sum of triple-frequency DD noise [12]. Observation weighting…”

Section: Experimental Analysesmentioning

confidence: 99%

BeiDou System (BDS) Triple-Frequency Ambiguity Resolution without Code Measurements

Chu

Yang

2018

Remote Sensing

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Phase and code measurements achieve ambiguity resolution in medium-or long-baseline computation. However, the code multipath effect on Global Navigation Satellite Systems (GNSS) phase and code measurements is a main source of error for ambiguity resolution, in particular the code multipath. The BeiDou System (BDS) of China is fully operational in the Asia-Pacific region and provides triple-frequency (B1, B2 and B3) measurements. Although previous research about BDS triple-frequency baseline computation indicated that using triple-frequency measurements improves the performance of ambiguity resolution, the respective methods are still impacted by code multipath since the code measurements are incorporated in the methods. Therefore, it is of interest to further improve the ambiguity resolution of BDS triple-frequency baseline computation by excluding the code multipath. We propose a modified phase-only method that only uses triple-frequency phase measurements to achieve BDS ambiguity resolution and evaluate the performance of the method. Observations from experimental medium and long baselines were collected with Trimble NetR9 receivers. The related ambiguity-resolution performances are computed with the phase-only method and a generalized phase-code method. The results show that the phase-only ambiguity resolution is feasible and generally performs better than the phase-code ambiguity resolution, but the improvement is subject to phase noise and satellite geometry.

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“…For BeiDou, such studies are somewhat limited, e.g. (Montenbruck et al, 2013;ElMowafy and Hu, 2014;and El-Mowafy, 2014b). Furthermore, while GPS, GLONASS and Galileo have MEO satellites, BeiDou additionally has Geostationary (GEO) and Inclined Geosynchronous Orbit (IGSO) satellites, which require different modelling as shown in ElMowafy (2014c).…”

Section: Used Parameters In the Error Modelmentioning

confidence: 99%

Pilot Evaluation of Integrating GLONASS, Galileo and BeiDou with GPS in Araim

El‐Mowafy

2016

Artificial Satellites

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ABSTRACT:In this pilot study, availability of the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) when integrating various combinations of satellite constellations including; Galileo, GLONASS and BeiDou with GPS is investigated. The Multiple Hypothesis Solution Separation method was applied using one month of real data. The data was collected at stations of known positions, located in regions that have different coverage levels by the tested constellations. While most previous studies used simulated data, the importance of using real data is twofold. It allows for the use of actual User Range Accuracy (URA) received within the satellite navigation message, which is a fundamental component for computation of the integrity protection level; and the computation of vertical position errors to validate the integrity approach. Results show that the vertical position error was always bounded by the protection level during the test period and the ARAIM availability can reach 100% of the time when using all constellations even though some constellations are yet incomplete.

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Initial assessment of the COMPASS/BeiDou-2 regional navigation satellite system

Cited by 327 publications

References 17 publications

Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service

Validation and Assessment of Multi-GNSS Real-Time Precise Point Positioning in Simulated Kinematic Mode Using IGS Real-Time Service

BeiDou System (BDS) Triple-Frequency Ambiguity Resolution without Code Measurements

Pilot Evaluation of Integrating GLONASS, Galileo and BeiDou with GPS in Araim

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