Results 31 to 40 of about 1,734,402 (280)

Performance of perturbation methods on orbit prediction

open access: yesMathematical and Computer Modelling, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Roberto Barrio, Sergio Serrano
openaire   +2 more sources

Research on the Rotational Correction of Distributed Autonomous Orbit Determination in the Satellite Navigation Constellation

open access: yesRemote Sensing, 2022
The autonomous orbit determination of the navigation constellation uses only bidirectional ranging data of the inter-satellite link for data processing.
Wei Zhou   +5 more
doaj   +1 more source

ZY3-02 Laser Altimeter Footprint Geolocation Prediction

open access: yesSensors, 2017
Successfully launched on 30 May 2016, ZY3-02 is the first Chinese surveying and mapping satellite equipped with a lightweight laser altimeter. Calibration is necessary before the laser altimeter becomes operational. Laser footprint location prediction is
Junfeng Xie   +8 more
doaj   +1 more source

A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods

open access: yesSensors, 2019
Because there are different types of BeiDou constellations with participating geostationary orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites, the maneuvering frequency of BeiDou satellites is higher than that of other navigation systems ...
Zhiwei Qin   +7 more
doaj   +1 more source

On-Orbit Manoeuvring Using Superquadric Potential Fields [PDF]

open access: yes, 2007
On-orbit manoeuvring represents an essential process in many space missions such as orbital assembly, servicing and reconfiguration. A new methodology, based on the potential field method along with superquadric repulsive potentials, is discussed in this
Badawy, Ahmed
core   +5 more sources

Reduction of Space Debris Collision Prediction Uncertainty Based on Q-Sat Precise Orbit

open access: yesSpace: Science & Technology, 2023
Collision probability is employed for evaluating whether there will be a dangerous encounter between 2 space objects. The fidelity of the collision probability mainly depends on the accuracies of orbit prediction and covariance prediction for the space ...
Huang Pu   +3 more
doaj   +1 more source

Prediction of Orbital Ordering in Single-Layered Ruthenates [PDF]

open access: yesPhysical Review Letters, 2001
The key role of the orbital degree of freedom to understand the magnetic properties of layered ruthenates is here discussed. In the G-type antiferromagnetic phase of Ca$_2$RuO$_4$, recent X-ray experiments reported the presence of 0.5 hole per site in the $d_{xy}$ orbital, while the $d_{\rm yz}$ and $d_{zx}$ orbitals contain 1.5 holes. This unexpected $
Hotta, Takashi, Dagotto, Elbio
openaire   +3 more sources

Orbital Mixer: Using Atomic Orbital Features for Basis-Dependent Prediction of Molecular Wavefunctions

open access: yesJournal of Chemical Theory and Computation, 2022
Leveraging ab initio data at scale has enabled the development of machine learning models capable of extremely accurate and fast molecular property prediction. A central paradigm of many previous works focuses on generating predictions for only a fixed set of properties.
Kirill Shmilovich   +5 more
openaire   +3 more sources

Initial Tracking, Fast Identification in a Swarm and Combined SLR and GNSS Orbit Determination of the TUBIN Small Satellite

open access: yesAerospace, 2022
Flight dynamics is a topic often overlooked by operators of small satellites without propulsion systems, as two-line elements (TLE) are easily accessible and accurate enough for most ground segment needs.
ClĂ©ment Jonglez   +3 more
doaj   +1 more source

A Deep Space Orbit Determination Software: Overview and Event [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2017
This paper presents an overview of deep space orbit determination software (DSODS), as well as validation and verification results on its event prediction capabilities.
Youngkwang Kim   +3 more
doaj   +1 more source

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