Results 31 to 40 of about 1,844,811 (291)
ZY3-02 Laser Altimeter Footprint Geolocation Prediction
Sensors, 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
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Remote 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
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Partial Decoding of the GPS Extended Prediction Orbit File [PDF]
, 2021 The paper is concerned with decoding the Extended Prediction Orbit data format file for an Assisted-GPS web-service via cypher-text only attack. We consider mandatory data content of the file and reveal the changes of this content at different moments ...
Gritsevich, Maria +5 more
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Prediction of Orbital Ordering in Single-Layered Ruthenates [PDF]
Physical 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
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Improving the Accuracy of the Martian Ephemeris Short-Term Prediction
Advances in Astronomy, 2018 The Chinese Mars exploration mission is planned to be launched in 2020, which includes an orbiter, a lander, and a rover. High precision Martian ephemeris is very important in Mars exploration, especially for the Martian orbit insertion and the Martian ...
Quan Shan +5 more
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A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods
Sensors, 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
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Reduction of Space Debris Collision Prediction Uncertainty Based on Q-Sat Precise Orbit
Space: 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
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Journal 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
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On-Orbit Manoeuvring Using Superquadric Potential Fields [PDF]
, 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
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Satellite Orbit Prediction Using Big Data and Soft Computing Techniques to Avoid Space Collisions
Mathematics, 2021 The number of satellites and debris in space is dangerously increasing through the years. For that reason, it is mandatory to design techniques to approach the position of a given object at a given time.
Cristina Puente +3 more
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