Results 11 to 20 of about 4,499,219 (309)

Uncertainty analysis of initial orbit determination in the minimum radar admissible region [PDF]

Scientific Reports
The poor accuracy of the single solution of the initial orbit determination (IOD) affects the precise orbit determination, target matching and arc-segment correlation. This paper proposes a method for analyzing the uncertainty of the IOD results based on
Yasheng Zhang, Jinyan Xue, Xuefeng Tao, Shuailong Zhao   +3 more
doaj   +2 more sources

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

Earth 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, C. D. Adam, J. Y. Pelgrift, E. J. Lessac‐Chenen, D. S. Nelson, P. G. Antreasian, A. J. Liounis, M. C. Moreau, C. W. Hergenrother, S. R. Chesley, M. C. Nolan, D. S. Lauretta   +11 more
doaj   +2 more sources

Angles-Only Initial Orbit Determination via Multivariate Gaussian Process Regression

Electronics (Switzerland), 2022
Vital for Space Situational Awareness, Initial Orbit Determination (IOD) may be used to initialize object tracking and associate observations with a tracked satellite.
Puneet Singla, David Schwab, Sean O'Rourke   +2 more
exaly   +2 more sources

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   +6 more sources

Initial Orbit Determination for the CR3BP using Particle Swarm Optimization [PDF]

CoRR, 2022
This work utilizes a particle swarm optimizer (PSO) for initial orbit determination for a chief and deputy scenario in the circular restricted three-body problem (CR3BP). The PSO is used to minimize the difference between actual and estimated observations and knowledge of the chief's position with known CR3BP dynamics to determine the deputy's initial ...
David Zuehlke, Taylor Yow, Daniel Posada, Joseph Nicolich, Christopher W. Hays, Aryslan Malik, Troy Henderson   +6 more
openaire   +3 more sources

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   +2 more sources

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 [PDF]

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   +5 more sources

Robust Initial Orbit Determination for Surveillance Doppler-Only Radars

IEEE Transactions on Aerospace and Electronic Systems, 2023
An initial orbit determination algorithm for surveillance Doppler-only radars with embedded quantification capabilities is presented. The method is based on a combination of Gauss' and Lambert's solvers formulated in the differential algebra (DA ...
Matteo Losacco, Roberto Armellin, Carlos Yanez, Laura Pirovano, Stéphanie Lizy-Destrez, Francesco Sanfedino   +5 more
openaire   +3 more sources

Universal Angles-Only Cislunar Initial Orbit Determination Using Sparse Grid Collocation

Journal of the Astronautical Sciences
Initial orbit determination is highly enabling for operational awareness and safety in space. Reliable orbit determination in non-Keplerian systems, such as multi-body orbital mechanics, is challenging due to chaotic and unpredictable motion of these ...
Casey Heidrich, Marcus Holzinger
exaly   +2 more sources