Results 11 to 20 of about 143,267 (285)

Initial orbit determination of BDS-3 satellites based on new code signals

Geodesy and Geodynamics, 2018
For the two newly launched satellites (PRN number 27 and 28) of the future global BeiDou navigation satellite system (BDS-3), there is no available broadcast ephemeris data and other initial orbit information, but the initial orbit is the fundamental of ...
Fei Ye, Yunbin Yuan, Jikun Ou
doaj   +3 more sources

Probabilistic Optical and Radar Initial Orbit Determination

Journal 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

Perturbed initial orbit determination

Astrodynamics
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, Losacco, Matteo, Armellin, Roberto   +2 more
openaire   +4 more sources

Initial orbit determination with the multibeam radar sensor BIRALES

Acta Astronautica, 2020
Abstract In this work we present a conceptual analysis of the use of the novel Italian multibeam radar sensor BIRALES for space surveillance. The dedicated orbit determination algorithm is described in detail. The algorithm is tailored to the peculiar configuration of the receiver gain pattern and is devoted to both reconstructing the track of the ...
Matteo Losacco, Pierluigi Di Lizia, Mauro Massari, Giovanni Naldi, Giuseppe Pupillo, Germano Bianchi, Jan Siminski   +6 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

Applicable Tracking Data Arcs for NORAD TLE Orbit Determination of the KOMPSAT-1 Satellite Using GPS Navigation Solutions [PDF]

Journal of Astronomy and Space Sciences, 2005
NORAD Two Line Element (TLE) is very useful to simplify the ground station antenna pointing and mission operations. When a satellite operations facility has the capability to determine NORAD type TLE which is independent of NORAD, it is important to ...
Byoung-Sun Lee
doaj   +1 more source

Effect of Observation Geometry on Short-Arc Angles-Only Initial Orbit Determination

Applied Sciences, 2022
Space-based optical sensors are attracting increasing research attention as they can measure the angle of space targets over large areas, facilitating low-cost, wide-area space target surveillance. Studying the effect of observation geometry on short-arc
Zhao Feng, Changxiang Yan, Yanfeng Qiao, Anlin Xu, Haihong Wang   +4 more
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Initial Identification of Thrust and Orbit Elements for Continuous Thrust Spacecraft in Circular Orbit

Aerospace, 2023
Continuous thrust spacecraft in circular orbits have had a great influence on the identification and cataloging of space targets. Gaussian-type orbital element variational equations are simplified and approximated. Ground-based radar observation datasets
Shuailong Zhao, Xuefeng Tao, Zhi Li
doaj   +1 more source

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, ROBERTO, DI LIZIA, PIERLUIGI, Zanetti, R.   +2 more
core   +1 more source

Initial Orbit Determination Method for Low Earth Orbit Objects Using Too-Short Arc Based on Bistatic Radar

IEEE Access, 2022
The problem of initial orbit determination (IOD) for Low Earth Orbit (LEO) objects using bistatic radar too-short arc (TSA) observations is addressed. For TSA observations, the traditional IOD methods suffer low accuracy.
Jinye Qu, Defeng Chen, Huawei Cao, Tuo Fu, Shuo Zhang   +4 more
doaj   +1 more source