Results 1 to 10 of about 143,162 (326)

Initial Orbit Determination and Event Reconstruction From Estimation of Particle Trajectories About (101955) Bennu [PDF]

open access: goldEarth and Space Science, 2020
The OSIRIS‐REx mission has observed multiple instances of particles being ejected from the surface of near‐Earth asteroid (101955) Bennu. The ability to quickly identify the particle trajectories and origins is necessary following a particle ejection ...
J. M. Leonard   +11 more
doaj   +3 more sources

Uncertainty Analysis of the Short-Arc Initial Orbit Determination [PDF]

open access: goldIEEE Access, 2020
The solution of the short-arc angles-only orbit determination problem has large uncertainty because the topocentric range is not observable. For a certain angular observation tracklet with measurement noise, there exist numerous potential orbits, all of ...
Xuefeng Tao   +4 more
doaj   +3 more sources

Two-Site Optical Observation and Initial Orbit Determination for Geostationary Earth Orbit Satellites [PDF]

open access: goldJournal of Astronomy and Space Sciences, 2010
Optical observation system provides angle-only measurement for orbit determination of space object. Range measurement can be directly acquired using laser ranging or tone ranging system.
Jin Choi   +4 more
doaj   +4 more sources

Improved Initial Orbit Determination Based on the Gooding Method of Low Earth Orbit Space Debris Using Space-Based Observations [PDF]

open access: goldRemote Sensing, 2023
Initial orbit determination (IOD), as a basis for initial orbit association and accurate orbit determination (OD), has a crucial role in the process of obtaining space debris orbit information. Among the traditional methods, the Gooding method has better
Yewen Yin   +5 more
doaj   +2 more sources

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

open access: goldJournal 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   +3 more sources

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

open access: goldApplied 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   +8 more
doaj   +2 more sources

Perturbed initial orbit determination [PDF]

open access: greenAstrodynamics, 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
Fossà, Alberto   +2 more
openaire   +3 more sources

Coarse Initial Orbit Determination for a Geostationary Satellite Using Single-Epoch GPS Measurements [PDF]

open access: yesSensors, 2015
A practical algorithm is proposed for determining the orbit of a geostationary orbit (GEO) satellite using single-epoch measurements from a Global Positioning System (GPS) receiver under the sparse visibility of the GPS satellites.
Ghangho Kim, Chongwon Kim, Changdon Kee
doaj   +2 more sources

Probabilistic Optical and Radar Initial Orbit Determination

open access: greenJournal of Guidance, Control, and Dynamics, 2018
Future space surveillance requires dealing with uncertainties directly in the initial orbit determination phase. We propose an approach based on Taylor differential algebra to both solve the initial orbit determination (IOD) problem and to map uncertainties from the observables space into the orbital elements space. This is achieved by approximating in
ARMELLIN, ROBERTO, DI LIZIA, PIERLUIGI
openaire   +6 more sources

A Study on the Strategies of the Positioning of a Satellite on Observed Images by the Astronomical Telescope and the Observation and Initial Orbit Determination of Unidentified Space Objects [PDF]

open access: goldJournal of Astronomy and Space Sciences, 2011
An optical tracking system has advantages for observing geostationary earth orbit (GEO) satellites relatively over other types of observation system.
Jin Choi   +8 more
doaj   +3 more sources

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