Results 21 to 30 of about 1,734,402 (280)
Prediction of tissue decompression in orbital surgery [PDF]
Clinical 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
Impacts of Arc Length and ECOM Solar Radiation Pressure Models on BDS-3 Orbit Prediction
Remote Sensing, 2022 The BeiDou global navigation satellite system (BDS-3) has already provided worldwide navigation and positioning services for which the high-precision BDS-3-predicting orbit is the foundation.
Ran Li +7 more
doaj +1 more source
On the predictability of Galileo disposal orbits [PDF]
, 2019 29 pages, 20 ...
Gondelach, David J. +2 more
openaire +3 more sources
Predicting The Orbit of TRAPPIST-1i [PDF]
Research Notes of the AAS, 2018 AAS Research ...
openaire +2 more sources
Effect of lunar gravity models on Chang'E-2 orbit determination using VLBI tracking data
Geodesy and Geodynamics, 2016 The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination.
Erhu Wei +3 more
doaj +1 more source
Evaluation of strategies for the ultra-rapid orbit prediction of BDS GEO satellites
Geo-spatial Information Science, 2023 The quality of BeiDou Navigation Satellite System (BDS) Geostationary Earth Orbit (GEO) ultra-rapid products is unsatisfactory because GEO satellites are nearly stationary relative to ground stations.
Wenxi Zhao +4 more
doaj +1 more source
Impact of Thermospheric Mass Density on the Orbit Prediction of LEO Satellites
Space Weather, 2020 Many thermospheric mass density (TMD) variations have been recognized in observations and physical simulations; however, their impact on the low‐Earth‐orbit satellites has not been fully evaluated.
Changyong He +8 more
doaj +1 more source
Orbit Predictions for Space Object Tracked by Ground-Based Optical and SLR Stations
Remote 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
Geo-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 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