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The prediction of satellite orbits
1963In this paper we develop a perturbation method and apply it to the prediction of orbits of earth satellites that are disturbed by various external forces. The theory of resonances and stable orbit configurations, possible when sunlight pressure is important, are also analyzed.
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Preoperative imaging to predict orbital invasion by tumor
Head & Neck, 2000Our purpose was to examine the accuracy of preoperative imaging in assessing tumor invasion of the orbit and nasolacrimal system.Nineteen preoperative CT and 17 preoperative MR images from patients at risk for orbital invasion were retrospectively reviewed.
M D, Eisen +5 more
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Achievable debris orbit prediction accuracy using laser ranging data from a single station [PDF]
Advances in Space Research, 2014 Earlier studies have shown that an orbit prediction accuracy of 20 arc sec ground station pointing error for 1-2 day predictions was achievable for low Earth orbit (LEO) debris using two passes of debris laser ranging (DLR) data from a single station ...
Jizhang Sang
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A multirate predictive approach to orbit control of small spacecraft
Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301), 2002The problem of orbit control for a small spacecraft is analysed and a solution based on predictive control is proposed. In particular, it is shown how a typical system requirement related to the actual implementation of the control action can be readily taken into account via a multirate formulation.
ROSSI, MATTEO GIOVANNI, LOVERA, MARCO
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On the prediction of satellite orbit decay and impact
Conference on Aerospace Meteorology, 1966Abstract : Presentation of problems associated with predicting satellite orbit decay plus a description of several computer programs for computing long-term orbit decay, model atmospheres, and final decay and re-entry. Computation of long-term orbit decay using the RAND Satellite Lifetime Program is illustrated for Explorer 9, and the orbit-decay data ...
C. GAZLEY, L. ROWELL, G. SCHILLING
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An analytical method for satellite orbit prediction
Chinese Astronomy and Astrophysics, 2006Abstract Orbit prediction of artificial satellites is a key link in space surveillance and real-time tracking. Because of the large number of objects to be tracked and because the required precision is not too high, the analytical method is often used in this connection. Such a method is given in this paper.
Liu Lin, Wang Yan-rong
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Analytical representations of precise orbit predictions for Earth orbiting space objects
Advances in Space Research, 2017Abstract Accurate orbits of Earth orbiting space objects are usually generated from an orbit determination/prediction process using numerical integrators, and presented to users in a tabulated form or a state vector including force model parameters. When dealing with hundreds of thousands of space objects such as in the space conjunction assessment ...
Jizhang Sang +4 more
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NASA GSFC Lunar Reconnaissance Orbiter (LRO) Orbit Estimation and Prediction
SpaceOps 2010 Conference, 2010This paper details the upgrades performed and also provides an overview of the performance of these upgrades during the actual support of the mission. Also presented are details of the integration of the software tools and automation implemented, including an overview of the integration of government legacy orbit estimation tools and automation with ...
Ann Nicholson +4 more
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Predicting galactic orbits with deep learning
2023Dies ist eine deutsche Kurzfassung dieser in Englisch verfassten Masterarbeit. Umlaufbahnen von Sternen in Galaxien verraten viel über die Entstehung und Vergangenheit einer Galaxie. Orbitmodelle geben einen Einblick in die kinematische Struktur einer Galaxie, die aus Beobachtungen nicht immer direkt ersichtlich ist.
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Low-Orbit Satellite Orbit Prediction Algorithm Based on Near-Polar Circular Orbit
Proceedings of the 3rd International Symposium on Automation, Information and Computing, 2022Delu Wei +4 more
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