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Multi-GNSS ultra-rapid orbit determination through epoch-parallel processing
High-precision Global Navigation Satellite Systems (GNSS) orbits are critical for real-time clock estimation and precise positioning service;...
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An effective automatic processing engine for improving the multi-GNSS constellation precise orbit prediction
Orbit prediction (OP) recently tends to be a very crucial step for supporting real-time GNSS orbit services due to the dynamic stability of...
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Multi-GNSS orbit combination at Wuhan University: strategy and preliminary products
Multi-GNSS orbits from the analysis centres (ACs) of the multi-GNSS Pilot Project of the International GNSS Service (IGS) are combined at Wuhan...
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Accurate analytical non-gravitational force model for precise orbit determination of QZS-1, 2, and 4
We propose an accurate analytical non-gravitational force model of QZS-1, 2, and 4 for a precise orbit determination of these satellites. To...
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BDS-3 precise orbit and clock solution at Wuhan University: status and improvement
With the rapid deployment of the third-generation satellites of the BeiDou Navigation Satellite System (BDS-3), Wuhan University (WHU) has...
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Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal
The High Accuracy Service (HAS) is an upcoming addition to the Galileo service portfolio that offers free correction data for precise point...
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Integrity monitoring for precise orbit determination of LEO satellites
Due to an increasing requirement for high accuracy orbital information for low Earth orbit (LEO) satellites, precise orbit determination (POD) of LEO...
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GNSS-based orbit determination method and flight performance for geostationary satellites
The utilization of Global Navigation Satellite System (GNSS) is becoming an attractive approach for the orbit determination of geostationary orbit...
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Pseudorange bias from inter-signal interference: the QZSS L5-L5S case
Analysis of the bias between Quasi-Zenith Satellite System (QZSS) L5-Q and L5-I pseudoranges reveals decimeter-level variations over the satellite...
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An effective interpolation strategy for mitigating the day boundary discontinuities of precise GNSS orbit products
A precise Global Navigation Satellite System (GNSS) satellite orbit is an essential prerequisite for precise point positioning (PPP). Due to the...
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The analysis and detection of orbit maneuvers for the BeiDou satellites based on orbital elements
The service areas of the BeiDou Navigation Satellite System (BDS) are China, the Asia–Pacific, and the world via three stages of development. The BDS...
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Instrument of Choice: GNSS
This chapter serves as an in-depth exploration of the Global Navigation Satellite System (GNSS), dissecting its space, ground, and user segments. It...
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Design of real-time GNSS-R software-defined receiver for coastal altimetry using GPS/BDS/QZSS signals
Global navigation satellite system reflectometry (GNSS-R) has considerable potential for monitoring sea surface height with high spatiotemporal...
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An empirical model for the attitude mode switch maneuvers of QZS-1 satellite
Precise knowledge about the attitude of Global Navigation Satellite System (GNSS) satellites is essential for precise orbit determination (POD) and...
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Improving QZSS precise orbit determination by considering the solar radiation pressure of the L-band antenna
Japanese Quasi-Zenith Satellite System (QZSS) consists of three inclined geosynchronous orbit (IGSO) satellites as well as a geostationary satellite....
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Atmospheric modes excited by the 2021 August eruption of the Fukutoku-Okanoba volcano, Izu–Bonin Arc, observed as harmonic TEC oscillations by QZSS
Continuous Plinian eruptions of volcanoes often excite atmospheric resonant oscillations with several distinct periods of a few minutes. We detected...
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Evaluation of real-time kinematic positioning performance of the BDS‑3 PPP service on B2b signal
The BeiDou global navigation satellite system (GNSS) of China (BDS-3) had full operation capacity on July 31, 2020, and started providing free...
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Initial performance assessment of Galileo High Accuracy Service with software-defined receiver
The European Galileo High Accuracy Service (HAS) was officially declared as initial service status on January 24, 2023, which can provide freely and...
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GLONASS signal characteristics analysis and navigation performance for geostationary satellites
The utilization of the global navigation satellite system (GNSS) is becoming an attractive approach for autonomous navigation of the geostationary...
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GLONASS-K attitude: rapid turning maneuvers and other deviations from ideal yaw steering
This paper provides a description of the GLONASS-K yaw turn maneuvers that regularly occur at orbit noon and orbit midnight when the Sun’s elevation...
