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

Wang, Liang; Li, Zishen; Ge, Maorong; Neitzel, Frank; Wang, Zhiyu; Yuan, Hong

doi:10.3390/rs10020337

Cited by 74 publications

(51 citation statements)

References 30 publications

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“…In this section, we further validated the performance of real-time products by the PPP technique. The PPP software used in this experiment, named RTPosNavi_AOE (version 1.0.17a, Beijing, China), was developed by the Academy of Opto-Electronics (AOE) based on the open-source software RTKLIB (version 2.4.3, Japan) [19]. The PPP rover used for this validation was conducted in static and kinematic modes, respectively, but the data processing strategy was all designed as kinematic mode, i.e., the estimated parameters of rover coordinates in two neighboring epochs were considered as independent.…”

Section: Positioning Results Of Real-time Ppp With Igs Stationsmentioning

confidence: 99%

Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

Wang

et al. 2018

IJGI

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The real-time State Space Representation (SSR) product of the GNSS (Global Navigation Satellite System) orbit and clock is one of the most essential corrections for real-time precise point positioning (PPP). In this work, the performance of current SSR products from eight analysis centers were assessed by comparing it with the final product and the accuracy of real-time PPP. Numerical results showed that (1) the accuracies of the GPS SSR product were better than 8 cm for the satellite orbit and 0.3 ns for the satellite clock; (2) the accuracies of the GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) SSR product were better than 10 cm for orbit RMS (Root Mean Square) and 0.6 ns for clock STD (Standard Deviation); and (3) the accuracies of the BDS (BeiDou Navigation Satellite System) and Galileo SSR products from CLK93 were about 14.54 and 4.42 cm for the orbit RMS and 0.32 and 0.18 ns for the clock STD, respectively. The simulated kinematic PPP results obtained using the SSR products from CLK93 and CLK51 performed better than those using other SSR products; and the accuracy of PPP based on all products was better than 6 and 10 cm in the horizontal and vertical directions, respectively. The real-time kinematic PPP experiment carried out in Beijing, Tianjin, and Shijiazhuang, China indicated that the SSR product CLK93 from Centre National d'Etudes Spatiales (CNES) had a better performance than CAS01. Moreover, the PPP with GPS + BDS dual systems had a higher accuracy than those with only a GPS single system.

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Section: Positioning Results Of Real-time Ppp With Igs Stationsmentioning

confidence: 99%

Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

Wang

et al. 2018

IJGI

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“…The study involved the determination of the convergence time of the Trimble R10 receiver, in RTK measurements, for a single baseline <14 km, for the accuracy of horizontal and vertical measurements ≤0.05 m using only Galileo satellites [ 15 ]. The convergence time included the RTK measurement initialization time, which was counted from the moment the mobile receiver “rover” was connected to the assistance system (correction from KRUR—single reference station) until the assumed accuracy of the solution was achieved (≤0.05 m).…”

Section: Methodsmentioning

confidence: 99%

Validation of the Accuracy and Convergence Time of Real Time Kinematic Results Using a Single Galileo Navigation System

Siejka

2018

Sensors

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For the last two decades, the American GPS and Russian GLONASS were the basic systems used in global positioning and navigation. In recent years, there has been significant progress in the development of positioning systems. New regional systems have been created, i.e., the Japanese Quasi-Zenith Satellite System (QZSS) and Indian Regional Navigational Satellite System (IRNSS). A plan to build its own regional navigation system named Korean Positioning System (KPS) was announced South Korea on 5 February 2018. Currently, two new global navigation systems are under development: the European Galileo and the Chinese BeiDou. The full operability of both systems by 2020 is planned. The paper deals with a possibility of determination of the user’s position from individual and independent global navigation satellite system (GNSS). The article is a broader concept aimed at independent determination of precise position from individual GPS, GLONASS, BeiDou and Galileo systems. It presents real time positioning results (Real Time Kinematic-RTK) using signals from Galileo satellites only. During the test, 14 Galileo satellites were used and the number of simultaneously observed Galileo satellites varied from five to seven. Real-time measurements were only possible in certain 24-h observation windows. However, their number was completed within 6 days at the end of 2017 and beginning of 2018, so there was possible to infer about the current availability, continuity, convergence time and accuracy of the RTK measurements. In addition, the systematic errors were demonstrated for the Galileo system.

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“…European Space Agency's Space Operations Centre in Darmstadt, Germany (ESA/ESOC), Deutsches GeoForschungs Zentrum (GFZ), GMV Aerospace and Defense (GMV), Natural Resources Canada (NRCAN), and Wuhan University WUHAN. Real-time PPP was assessed for static and kinematic applications using GPS only [13], GPS + GLONASS [14], GPS + GLONASS + BeiDou [15], and GPS + GLONASS + Galileo + BeiDou [10] [16] [17]. Galileo-only PPP and its contribution to GPS PPP were investigated using the final precise ephemeris for both static and post-processed kinematic modes [18].…”

Section: Centre National D'etudes Spatiales (Cnes) German Aerospace mentioning

confidence: 99%

Real-Time GPS/Galileo Precise Point Positioning Using NAVCAST Real-Time Corrections

Elmezayen¹,

El-Rabbany²

2019

POS

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Real-time precise point positioning (PPP) is possible through the use of real-time precise satellite orbit and clock corrections, which are available through a number of organizations including the International GNSS Service (IGS) real-time service (IGS-RTS). Unfortunately, IGS-RTS is only available for the GPS and GLONASS constellations. In 2018, a new real-time service, NAVCAST, which provides real-time precise orbit and clock corrections for the GPS and Galileo constellations, was launched. In this research, the potential performance of real-time PPP which makes use of NAVCAST real-time corrections is analyzed using various static and kinematic datasets. In the static dataset, 24 hours of observations from eight IGS stations in Canada over three different days were utilized. The static results show that the contribution of Galileo satellites can improve the positioning accuracy, with 30%, 34%, and 31% in east, north, and up directions compared to the GPS-only counterparts. In addition, centimeter-level positioning accuracy in the horizontal direction and decimeter-level positioning accuracy in the vertical direction can be achieved by adding Galileo observations. In the kinematic dataset, a real vehicular test was conducted in urban and suburban combined areas. The real-time kinematic GPS/Galileo PPP solutions demonstrate an improvement of about 53%, 45%, and 70% in east, north, and up directions compared to the GPS-only counterparts. It is shown that the real-time GPS/Galileo PPP can achieve a sub-decimeter horizontal positioning accuracy and about meter-level vertical positioning accuracy through the use of NAVCAST real-time corrections.

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

Cited by 74 publications

References 30 publications

Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

Validation of the Accuracy and Convergence Time of Real Time Kinematic Results Using a Single Galileo Navigation System

Real-Time GPS/Galileo Precise Point Positioning Using NAVCAST Real-Time Corrections

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