Results 21 to 30 of about 3,183,096 (399)

Estimation of a General Along-Track Acceleration in the KOMPSAT-1 Orbit [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
General along-track acceleration was estimated in the KOMPSAT-1 orbit determination process. Several sets of the atmospheric drag and solar radiation pressure coefficients were also derived with the different spacecraft area.
Byoung-Sun Lee   +2 more
doaj   +1 more source

Conjoint Analysis of GPS Based Orbit Determination among Traditional Methods

open access: yesSakarya University Journal of Computer and Information Sciences, 2023
Satellite orbits are subject to change due to external forces. Various data gathering and processing methods exist to determine a perturbed orbit. The operators need to estimate satellite orbits for safe orbital operations.
Cevat Özarpa, İbrahim Öz
doaj   +1 more source

BeiDou Satellite Radiation Force Models for Precise Orbit Determination and Geodetic Applications

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2021
China's BeiDou satellite navigation system (BDS) has completed its full constellation in orbit since June 2020. Services have been evolved from regional (BDS-2) to global (BDS-3).
Bingbing Duan   +5 more
semanticscholar   +1 more source

Analysis on BDS-3 Autonomous Navigation Performance Based on the LEO Constellation and Regional Stations

open access: yesRemote Sensing, 2023
The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu   +8 more
doaj   +1 more source

Two-Site Optical Observation and Initial Orbit Determination for Geostationary Earth Orbit Satellites [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
Optical observation system provides angle-only measurement for orbit determination of space object. Range measurement can be directly acquired using laser ranging or tone ranging system.
Jin Choi   +4 more
doaj   +1 more source

Research on the Effectiveness of Different Estimation Algorithm on the Autonomous Orbit Determination of Lagrangian Navigation Constellation

open access: yesInternational Journal of Aerospace Engineering, 2016
The accuracy of autonomous orbit determination of Lagrangian navigation constellation will affect the navigation accuracy for the deep space probes. Because of the special dynamical characteristics of Lagrangian navigation satellite, the error caused by ...
Youtao Gao   +3 more
doaj   +1 more source

Precise Orbit Determination of BDS MEO Satellites Based on Satellite TT&C Stations

open access: yesInternational Journal of Aerospace Engineering, 2016
A novel method, which is based on the triple-frequency combination and Space-Based Telemetry, Tracking, and Command (STT&C) stations, is proposed in this paper.
Kezhao Li   +5 more
doaj   +1 more source

A Parallel Approach for Multi-GNSS Ultra-Rapid Orbit Determination

open access: yesRemote Sensing, 2021
Global Navigation Satellite System (GNSS) ultra-rapid orbit is critical for geoscience and real-time engineering applications. To improve the computational efficiency and the accuracy of predicted orbit, a parallel approach for multi-GNSS ultra-rapid ...
Chunhua Jiang   +5 more
doaj   +1 more source

New-Generation BeiDou (BDS-3) Experimental Satellite Precise Orbit Determination with an Improved Cycle-Slip Detection and Repair Algorithm. [PDF]

open access: yesSensors (Basel), 2018
Currently, five new-generation BeiDou (BDS-3) experimental satellites are working in orbit and broadcast B1I, B3I, and other new signals. Precise satellite orbit determination of the BDS-3 is essential for the future global services of the BeiDou system.
Hu C   +3 more
europepmc   +2 more sources

Conductance measurement of spin-orbit coupling in the two-dimensional electron systems with in-plane magnetic field [PDF]

open access: yes, 2016
We consider determination of spin-orbit (SO) coupling constants for the two-dimensional electron gas from measurements of electric properties in rotated in-plane magnetic field.
Kolasiński, K.   +2 more
core   +1 more source

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