Results 241 to 250 of about 875,218 (283)

Universal dense-open windows for generic conservative surface semigroups and graph-directed local systems

Shmalo Y.
europepmc   +1 more source

The Newton-X platform for mixed quantum-classical dynamics.

Phys Chem Chem Phys
Barbatti M, Mattos RS, Demoulin B, de O Bispo M, Bondanza M, Brady M, Crespo-Otero R, de Miranda EGF, Dral PO, Granucci G, Hehn A, Hernández FJ, Iuzzolino G, Kar R, Kossoski F, Lischka H, Mennucci B, Mukherjee S, Mukhopadhyay A, Perrella F, Persico M, Pinheiro M, Pittner J, Plasser F, Rega N, Sangiogo-Gil E, Thorat T, Toldo JM, Tomaz AA, Varella MTDN, Vasquez L.   +30 more
europepmc   +1 more source

Extending the hybrid methodology for orbit propagation by fitting techniques

Neurocomputing, 2019
The hybrid methodology for orbit propagation is a technique that allows improving the accuracy of any propagator for predicting the future trajectory of a satellite or space-debris object in orbit around the Earth.
Alexander Wittig, Rosario Lopez, Montserrat San-Martín   +2 more
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Orbital Uncertainty Propagation with PC-Kriging

2020 American Control Conference (ACC), 2020
In this paper, the polynomial chaos based Kriging (PC-Kriging) is utilized as a surrogate model for orbital uncertainty propagation. The polynomial chaos can represent the global trend of the uncertainty distribution whereas the Kriging captures the local uncertainty variations. A new learning strategy is proposed to incrementally build and improve the
Bin Jia, Ming Xin 0001
openaire   +2 more sources

Analytical Orbit Propagator Based on Vectorial Orbital Elements

AIAA Guidance, Navigation, and Control (GNC) Conference, 2013
By using the vector orbital elements, namely the specific angular momentum and the eccentricity vectors, the first order short periodic equations of motion about an oblate planet are derived through a straightforward averaging technique. The results which are obtained are expressed in a coordinate-free form, and the singularity for low eccentricities ...
Daniel Condurache, Vladimir Martinusi
openaire   +1 more source

Quasiparticle virtual orbitals in electron propagator calculations

The Journal of Chemical Physics, 2008
The computational limits of accurate electron propagator methods for the calculation of electron binding energies of large molecules are usually determined by the rank of the virtual orbital space. Electron density difference matrices that correspond to these transition energies in the second-order quasiparticle approximation may be used to obtain a ...
R, Flores-Moreno, J V, Ortiz
openaire   +2 more sources

Analytic propagators for spin–orbit interactions

Journal of Physics A: Mathematical and Theoretical, 2009
We derive analytic expressions for propagators in spin–orbit coupled systems. In addition to their kinetic energy, these systems exhibit a potential energy that mixes position, momentum and spin operators. We consider Hamiltonians with limited noncommutativities: the confined spin–orbit coupled Hamiltonian , the confined Equal–Strength–Rashba ...
Bailey C Hsu, Jean-François S Van Huele
openaire   +1 more source

Fast orbit propagator for graphical display

Journal of Guidance, Control, and Dynamics, 1991
A simple analytic orbit propagator is presented which incorporates a mean-to-osculating transformation to generate a graphical display of the trajectories of earth-orbiting satellites. The first-order effects of the oblateness of the earth on the orbit are consistently included.
F. Landis Markley, James F. Jeletic
openaire   +1 more source

Periodic orbit scar in wavepacket propagation

International Journal of Modern Physics C, 2019
This study analyzed the scar-like localization in the time-average of a time-evolving wavepacket on a desymmetrized stadium billiard. When a wavepacket is launched along the orbits, it emerges on classical unstable periodic orbits as a scar in stationary states.
Mitsuyoshi Tomiya, Shoichi Sakamoto, Eric J. Heller   +2 more
openaire   +1 more source

Orbit Propagator Coefficients for Earth Orbiting Satellites

2022 URSI Regional Conference on Radio Science (USRI-RCRS), 2022
P.D. Mishra, B.N. Ramakrishna, Nandini Harinath, Sharda Vashisth, Amitava Sen Gupta   +4 more
openaire   +1 more source