Results 21 to 30 of about 142,311 (289)

Orbit Predictions for Space Object Tracked by Ground-Based Optical and SLR Stations

open access: yesRemote Sensing, 2022
In many cases, we have few optical observations over a short time span, and most of the information generated is too limited to compute a full orbit according to the angles-only method.
A. M. Abdelaziz   +4 more
doaj   +1 more source

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

open access: yesGeo-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   +1 more source

Analysis of Orbit Accuracy for Non-cooperative Earth-Orbiting Objects

open access: yesOpen Astronomy, 2019
The atmospheric resistance and solar radiation pressure are the main sources of non-gravitational perturbations in orbit determination and prediction of non-cooperative earth-orbiting objects.
Jianrong Chen, Junfeng Li
doaj   +1 more source

Prediction of tissue decompression in orbital surgery [PDF]

open access: yesClinical Biomechanics, 2004
Objective: A method to predict the relationships between decompressed volume of orbital soft tissues, backward displacement of globe after osteotomy, and force exerted by the surgeon, was proposed to improve surgery planning in exophthalmia reduction.
Luboz, Vincent   +5 more
openaire   +3 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

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

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

Predicting The Orbit of TRAPPIST-1i [PDF]

open access: yesResearch Notes of the AAS, 2018
AAS Research ...
openaire   +2 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

Multiple solutions for asteroid orbits: Computational procedure and applications [PDF]

open access: yes, 2005
We describe the Multiple Solutions Method, a one-dimensional sampling of the six-dimensional orbital confidence region that is widely applicable in the field of asteroid orbit determination.
A. Milani   +11 more
core   +1 more source

Home - About - Disclaimer - Privacy