GPS/GLONASS Combined Precise Point Positioning With the Modeling of Highly Stable Receiver Clock in the Application of Monitoring Active Seismic Deformation

Chen, X.; Lu, Cuixian; Guo, Biao; Guo, Fei; Ge, Maorong; Li, X.; Schuh, Harald

doi:10.1029/2017jb015060

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…Notably, the noise coefficients have been provided in previous studies; in fact, it has been verified that the empirical values are not the optimal choice for PPP position accuracy [ 26 ].…”

Section: Analysis Of Position and Troposphere With Clock Modellingmentioning

confidence: 99%

The Benefits of Receiver Clock Modelling in Satellite Timing

Qin

Wang

et al. 2021

Sensors

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Satellite timing is an effective and convenient method that has been widely accepted in the time community. The key to satellite timing is obtaining a clean receiver clock offset. In this paper, instead of regarding the receiver clock offset as white noise, a two-state stochastic clock model involving three kinds of noise was conceived and used in PPP filter estimation. The influence of clock type and sampling time on satellite timing performance was first analysed. In addition, the kinematic scheme and static scheme were both investigated for meeting the demands of multi-occasional users. The values show that the model works well for both the kinematic scheme and static scheme; in contrast to that of the white noise model, the timing stability is enhanced at all the sampling times. For the six stations, especially when the averaging time is less than 1000 s, the average stability improvement values of the kinematic scheme are 75.53, 43.24, 75.00, 69.05, 40.57, and 25.45%, and the average improvement values of the static scheme are 65.49, 77.94, 56.71, 60.78, 64.41, and 39.41%. Furthermore, the enhancement magnitude is related to clock type. For a high-stability clock, the improvement of the kinematic scheme is greater than that of the static scheme, whereas for a low-stability clock, the improvement of the kinematic scheme is less than that of the static scheme.

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Section: Analysis Of Position and Troposphere With Clock Modellingmentioning

confidence: 99%

The Benefits of Receiver Clock Modelling in Satellite Timing

Qin

Wang

et al. 2021

Sensors

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“…PPP has quickly become very popular for high-precision applications. Chen et al (2018) showed, for example, how PPP using combined GPS and GLONASS measurements has become an effective method for monitoring crustal deformation caused by earthquakes.…”

Section: Positioning Modesmentioning

confidence: 99%

GPS, Data Acquisition, and Analysis

Bruyninx¹,

Aerts²,

Legrand³

2019

Encyclopedia of Solid Earth Geophysics

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“…3. Порівняльна характеристика систем з параметрами необхідних даних, отриманих із праць [1,4,7,16], для закону збереження механічної енергії подана в табл.…”

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Global Positioning Systems in Traction Calculations With Calculation of Wheelset Wear of Rolling Stock

Barybin¹,

Falendysh²,

Hatchenko³

et al. 2020

Collected Scientific Works of Ukrainian State University of Railway Transport

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Анотація. У статті розглянуті питання встановлення впливу різних видів складових основного й додаткового опору, визначена необхідність отримання інформації з систем глобального позиціонування GPS/ГЛОНАСС поїзних локомотивів та її використання в тягових розрахунках, встановлена величина зносу деталей і вузлів екіпажної частини. Визначено рівняння основного опору заданого об'єкта дослідження на базі закону збереження механічної енергії та порівняльної технічної характеристики систем навігації. Ключові слова: GPS/ГЛОНАСС, тягові розрахунки, екіпажна частина, математичне моделювання, локомотив. Abctract. The article deals with global positioning systems integrated on VL11 locomotives. The scheme of operation and comparative characteristics of the accuracy of information from GPS and GLONASS systems are given. Expressions of the main resistance components of the friction forces in rolling stock bearings, rolling friction of wheels on rails, resistance forces on track irregularities, air resistance forces and sliding friction forces of wheels on rails are established. Expressions of components of additional resistance are established: resistance forces from bows, curves, resistance when starting from a place, from low temperatures and wind. The speed dependence is constructed using the specified formulas for the specified calculation parameters. The paper uses the law of conservation of mechanical energy, as the main factor takes into account all the effects on the rolling stock, the movement of the train. Shown graphically with a high-speed graph of the tracking section of the considered stage. Based on the law of conservation of mechanical energy, the real value of the main drag forces of cars on the Shebelinka-Zanki tracking section is established, the possibility of obtaining in real time is proved, and it is proposed to use it to optimize the consumption of fuel and energy resources for train traction. The paper considers the issues of establishing the actual technical parameters of the rolling stock crew by approximating (lianerization) the curve of theoretical smallpox resistance to the real one. An algorithm for searching for technical parameters of the crew part is proposed. The statement about the need to introduce mathematical modeling methods in the locomotive economy in order to establish rational traction costs, search for optimal operating modes and mass practical testing.

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GPS/GLONASS Combined Precise Point Positioning With the Modeling of Highly Stable Receiver Clock in the Application of Monitoring Active Seismic Deformation

Cited by 11 publications

References 23 publications

The Benefits of Receiver Clock Modelling in Satellite Timing

The Benefits of Receiver Clock Modelling in Satellite Timing

GPS, Data Acquisition, and Analysis

Global Positioning Systems in Traction Calculations With Calculation of Wheelset Wear of Rolling Stock

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