Results 11 to 20 of about 4,565,671 (287)

Orbit Determination Using Angle-Only Data for MEO & GEO Satellite and Obsolete [PDF]

Journal of Astronomy and Space Sciences, 2009
We used an optical observation system with a 0.6m wide-field telescope and 5 computers system in KASI (Korean Astronomy and Space Science Institute) for satellite optical observation.
Jin Choi, Bang-Yeop Kim, Hong-Suh Yim, Heon-Young Chang, Joh-Na Yoon, Myung-Jing Kim, Ok-Jun Hwang   +6 more
doaj   +2 more sources

Perturbed initial orbit determination

Astrodynamics, 2023
An algorithm for robust initial orbit determination (IOD) under perturbed orbital dynamics is presented. By leveraging map inversion techniques defined in the algebra of Taylor polynomials, this tool returns a highly accurate solution to the IOD problem and estimates a range centered on the aforementioned solution in which the true orbit should lie. To
Alberto Fossà, Matteo Losacco, Roberto Armellin   +2 more
openaire   +4 more sources

A Multimodal Differential Evolution Algorithm in Initial Orbit Determination for a Space-Based Too Short Arc

Remote Sensing, 2022
Under the too short arc scenario, the evolutionary-based algorithm has more potential than traditional methods in initial orbit determination. However, the underlying multimodal phenomenon in initial orbit determination is ignored by current works.
Hui Xie, Shengli Sun, Tianru Xue, Wenjun Xu, Huikai Liu, Linjian Lei, Yue Zhang   +6 more
doaj   +3 more sources

Angles-Only Initial Orbit Determination of Low Earth Orbit (LEO) Satellites Using Real Observational Data

Journal of Astronomy and Space Sciences, 2019
The Optical Wide-field patroL-Network (OWL-Net) is a Korean optical space surveillance system used to track and monitor objects in space. In this study, the characteristics of four Initial Orbit Determination (IOD) methods were analyzed using artificial ...
Hyewon Hwang, Sang-Young Park, Eunji Lee
doaj   +2 more sources

Initial Orbit Determination Based on Propagation of Orbit Sets with Differential Algebra [PDF]

, 2017
The object of this paper is the initial orbit determination of an orbit set compatible with an observational arc by means of differential algebra. The initial estimate is retrieved as a truncated power series expanded with respect to the uncertainties in the measurements. The analysis of the region is performed with the automatic domain splitting, that
Pirovano, L., SANTERAMO, DANIELE ANTONIO, WITTIG, ALEXANDER NICOLAUS, ARMELLIN, ROBERTO, DI LIZIA, PIERLUIGI   +4 more
openaire   +2 more sources

Dealing with uncertainties in angles-only initial orbit determination [PDF]

, 2016
A method to deal with uncertainties in initial orbit determination (IOD) is presented. This is based on the use of Taylor differential algebra (DA) to nonlinearly map uncertainties from the observation space to the state space.
Armellin, R. [0000-0002-3516-6428], Zanetti, R., Armellin, R, Zanetti, R, Di Lizia, P, Di Lizia, P. [0000-0003-1692-3929]   +5 more
core   +3 more sources

Orbit Determination of GPS and Koreasat 2 Satellite Using Angle-Only Data and Requirements for Optical Tracking System [PDF]

Journal of Astronomy and Space Sciences, 2004
Gauss method for the initial orbit determination was tested using angle-only data obtained by orbit propagation using TLE and SGP4/SDP4 orbit propagation model.
Woo-Kyoung Lee, Hyung-Chul Lim, Pil-Ho Park, Jae-Hyuk Youn, Hong-Suh Yim, Hong-Kyu Moon   +5 more
doaj   +1 more source

An Improved Range-Searching Initial Orbit-Determination Method and Correlation of Optical Observations for Space Debris

Applied Sciences, 2023
The Changchun Observatory of the National Astronomical Observatories, Chinese Academy of Sciences, and the Shanghai Astronomical Observatory are used to generate very short arc (VSA) angle observations of objects in low Earth orbit (LEO) and ...
Xiangxu Lei, Shengfu Xia, Hongkang Liu, Xiaozhen Wang, Zhenwei Li, Baomin Han, Jizhang Sang, You Zhao, Hao Luo   +8 more
doaj   +1 more source

Generalization of a method by Mossotti for initial orbit determination [PDF]

Celestial Mechanics and Dynamical Astronomy, 2021
AbstractHere, we revisit an initial orbit determination method introduced by O. F. Mossotti employing four geocentric sky-plane observations and a linear equation to compute the angular momentum of the observed body. We then extend the method to topocentric observations, yielding a quadratic equation for the angular momentum. The performance of the two
Giovanni F. Gronchi, Giulio Baù, Óscar Rodríguez, Robert Jedicke, Joachim Moeyens   +4 more
openaire   +4 more sources

Trends of Initial Orbit Determination Accuracy for Time Interval Change Between Three Pairs of Measurement Datas [PDF]

Journal of Astronomy and Space Sciences, 2009
Gauss and Laplace methods for initial orbit determination (IOD) are classical orbit determination tools and have been used very efficiently in optical satellite surveillance system.
Okjun Hwang, Jung Hyun Jo
doaj   +1 more source