Results 1 to 10 of about 347 (123)

Improving BDS broadcast ephemeris accuracy using ground-satellite-link observations [PDF]

open access: diamondSatellite Navigation, 2022
The BeiDou Navigation Satellite System (BDS) employs a hybrid constellation including GEO (Geosynchronous Earth Orbit), IGSO (Inclined Geosynchronous Orbit), and MEO (Medium Earth Orbit) satellites, where the GEO and IGSO satellites are critical to ...
Junping Chen   +4 more
doaj   +3 more sources

Study on Optimal Broadcast Ephemeris Parameters for GEO/IGSO Navigation Satellites [PDF]

open access: goldSensors, 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
doaj   +7 more sources

Different approaches in GLONASS orbit computation from broadcast ephemeris [PDF]

open access: diamondGeodetski Vestnik, 2016
Several types of methods can solve equations of satellite motion numerically. These methods are divided into single and multi-step methods. The accuracy of each method depends directly on adopted integration step size between successive iterations.
Kamil Maciuk
doaj   +4 more sources

An optimal design of the broadcast ephemeris for LEO navigation augmentation systems [PDF]

open access: goldGeo-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
doaj   +3 more sources

Performance Assessment of Non-Integer-Hour Data Blocks in BDS Broadcast Ephemeris [PDF]

open access: goldIEEE Access
Due to system anomalies, BeiDou navigation satellite system (BDS) sometimes updates the broadcast ephemeris at non-integral hours. The gross errors contained in the non-integer-hour data blocks of broadcast ephemeris will lead to the signal-in-space (SIS)
Jingjing Wang, Chao Zhou
doaj   +3 more sources

Broadcast Ephemeris with Centimetric Accuracy: Test Results for GPS, Galileo, Beidou and Glonass [PDF]

open access: goldRemote 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
doaj   +4 more sources

Orbit Prediction using Broadcast Ephemeris for GLONASS Satellite Visibility Analysis [PDF]

open access: goldJournal of Astronomy and Space Sciences, 2009
Even though there are several Global Navigation Satellite Systems under development, only GPS and GLONASS are currently available for satellite positioning.
Hye-In Kim, Kwan-Dong Park
doaj   +5 more sources

Velocity and Acceleration of NavIC Satellites using Broadcast Ephemeris [PDF]

open access: goldInternational Journal of Mathematical, Engineering and Management Sciences, 2018
The current manuscript describes a methodology to derive velocity and acceleration of NavIC satellites from the broadcast ephemeris. A fourth-order central differencing formula is used to derive NavIC satellites’ Earth-Centred-Earth-Fixed (ECEF) velocity
Bidyut B. Gogoi   +3 more
doaj   +3 more sources

A 16-parameter GEO Broadcast Ephemeris [PDF]

open access: greenJournal of Geodesy and Geoinformation Science, 2018
Currently, the broadcast ephemerides used in GEOs are same as those of the MEOs and IGSOs in the BeiDou navigation constellation. However, a trade-off strategy, i.e.
Zhongkai ZHANG,Lan DU,Li LIU,Feng HE,Yu LU,Peiyuan ZHOU
doaj   +2 more sources

Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities [PDF]

open access: diamondNavigation
With 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
doaj   +3 more sources

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