Results 11 to 20 of about 4,598 (208)
Remote Sensing, 2021 With the rapid development and gradual perfection of GNSS in recent years, improving the real-time service performance of GNSS has become a research hotspot. In GNSS single-point positioning, broadcast ephemeris is used to provide a space–time reference.
Hanlin Chen +5 more
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Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data
Universe, 2022 Solar system ephemeris is very important for pulsar timing and navigation. In order to explore the effect of different precision ephemerides on X-ray pulsar timing and navigation, the differences between timing and navigation results with four JPL ...
Yongtao Deng, Shuanggen Jin
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New Data on the Eclipsing Binary V1848 Ori and Improved Orbital and Light Curve Solutions
Open Astronomy, 2020 New observations of the eclipsing binary system V1848 Ori were carried out using the V filter resulting in a determination of new times of minima and new ephemeris were obtained.
Davoudi Fatemeh +13 more
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An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring
Remote Sensing, 2023 The ephemeris fault needs to be detected and mitigated in the ground-based augmentation system to provide precision approach for the aircraft. In the current fault detection and exclusion (FDE) method, the double-differenced carrier phase (DDCP ...
Yiping Jiang, Wang Li, Hengwei Zhang
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Elements and ephemeris of comet 1898i
The Astronomical Journal, 1898 William J. Hussey
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Study on Optimal Broadcast Ephemeris Parameters for GEO/IGSO Navigation Satellites
Sensors, 2020 This paper proposes new sets of suitable broadcast ephemeris parameters for geosynchronous (GEO) and inclined geosynchronous (IGSO) navigation satellites (NSs).
Jin Haeng Choi +3 more
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Clio y Asociados, 2017 The commemoration of the ephemeris in the school offers us one of the fundamental spaces in which the senses of the nation are narrated. At present we observe that in the province of Misiones, similar strategies were implemented to build ...
María Itatí Rodríguez
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An optimal design of the broadcast ephemeris for LEO navigation augmentation systems
Geo-spatial Information Science, 2022 As the deployment of large Low Earth Orbiters (LEO) communication constellations, navigation from the LEO satellites becomes an emerging opportunity to enhance the existing satellite navigation systems.
Xueli Guo +5 more
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Symposium - International Astronomical Union, 1979 Newcomb's (1898) Tables of Mars with Ross's corrections have been used to compute its ephemeris in national ephemerides. Clemence (1949 and 1961) constructed a more precise theory of Mars and determined preliminary mean elements using a limited number of observations. Laubscher (1971) compared Clemence's theory with about 11000 observations by meridian
Hiroshi Nakai, Hiroshi Kinoshita
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