Results 1 to 10 of about 779 (166)
A new interpolation method based on satellite physical character in using IGS precise ephemeris
Geodesy and Geodynamics, 2014 Due to the deficiency of sliding Lagrange polynomial interpolation, the author proposes a new interpolation method, which considers the physical character of satellite movement in coordinate transformation and reasonable selection of interpolation ...
Liu Weiping, Hao Jinming
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A Method for Enhancing the Positioning Performance of PPP-B2b by Integrating Galileo Observation [PDF]
SensorsThe BeiDou-3 (BDS-3) Precise Point Positioning service (PPP-B2b) can realize decimeter-level positioning by broadcasting satellite orbit, clock offset, and code bias corrections via GEO satellites, enabling PPP without reliance on ground communication ...
Xuena Shang +5 more
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Broadcast Ephemeris with Centimetric Accuracy: Test Results for GPS, Galileo, Beidou and Glonass
Remote Sensing, 2021 Here we test the capability of the Broadcast Ephemeris Message, in both its GPS-like (Keplerian ellipse with secular and periodic perturbations) and Glonass-like (numerical integration of a 9D state vector) formats, to reproduce a corresponding precise ...
Alessandro Caporali, Joaquin Zurutuza
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Thermospheric mass density measurement from precise orbit ephemeris
Geodesy and Geodynamics, 2016 Atmospheric drag, which can be inferred from orbit information of low-Earth orbiting (LEO) satellites, provides a direct means of measuring mass density.
Junyu Chen, Jizhang Sang
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A Study of GPS Precise Ephemeris Interpolation for Maritime Precise Positioning Applications
Journal of Navigation and Port Research, 2009 Currently many vessels determine an overhead obstruction by a rule of thumb based on their draft for maritime navigation. Therefore they doesn`t have a good overhead obstruction clearance because vertical position of vessels varies on time by tidal. As a result, it is occurred maritime accidents that the mainmast of vessels is bumped against overhead ...
Deuk-Jae Cho
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Signal in Space Error and Ephemeris Validity Time Evaluation of Milena and Doresa Galileo Satellites
Sensors, 2019 In August 2016, Milena (E14) and Doresa (E18) satellites started to broadcast ephemeris in navigation message for testing purposes. If these satellites could be used, an improvement in the position accuracy would be achieved.
Umberto Robustelli +2 more
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Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities
NavigationWith advancements in the broadcast ephemeris accuracy of global navigation satellite systems (GNSSs), precise point positioning based on broadcast ephemeris (BE-PPP) is gradually showing promising prospects.
Quanrun Cheng +3 more
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Remote Sensing, 2022 Since BeiDou Navigation Satellite System (BDS) and Japan’s Quasi-Zenith Satellite System (QZSS) have more visible satellites in the Asia-Pacific region, and navigation satellites of Global Positioning System (GPS), Galileo satellite navigation system (Galileo), and GLONASS satellite navigation system (GLONASS) are uniformly distributed globally, the ...
Guanwen Huang, Wei Xie, Huang Guanwen
exaly +3 more sources
AerospaceThe cislunar space navigation satellite system is essential infrastructure for lunar exploration in the next phase. It relies on high-precision orbit determination to provide the reference of time and space.
Hejin Lv +3 more
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Remote Sensing, 2019 Abnormal information of satellite orbits inevitably appears in the broadcast ephemeris. Failure to obtain unhealthy information on GPS satellite orbits in precise orbit determination (POD) degrades GPS service performance.
Fei Ye +4 more
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