Results 21 to 30 of about 40,224 (152)
, 2011 In network coding a constant dimension code consists of a set of k-dimensional subspaces of F_q^n. Orbit codes are constant dimension codes which are defined as orbits of a subgroup of the general linear group, acting on the set of all subspaces of F_q^n.
Braun, Michael +3 more
core +1 more source
Advances in Space Research, 2021 The estimation of satellite orbits and clocks plays a central role in different Global Navigation Satellite System (GNSS) domains, e.g. precise positioning or time transfer.
L. Massarweh +2 more
semanticscholar +1 more source
Binary Parseval frames from group orbits [PDF]
Linear Algebra and its Applications, 2017 Binary Parseval frames share many structural properties with real and complex ones. On the other hand, there are subtle differences, for example that the Gramian of a binary Parseval frame is characterized as a symmetric idempotent whose range contains ...
R. Mendez +4 more
semanticscholar +1 more source
Multiqubit Clifford groups are unitary 3-designs
, 2017 Unitary $t$-designs are a ubiquitous tool in many research areas, including randomized benchmarking, quantum process tomography, and scrambling. Despite the intensive efforts of many researchers, little is known about unitary $t$-designs with $t\geq3$ in
Zhu, Huangjun
core +1 more source
Higher-order spin effects in the dynamics of compact binaries II. Radiation field [PDF]
, 2006 Motivated by the search for gravitational waves emitted by binary black holes, we investigate the gravitational radiation field of point particles with spins within the framework of the multipolar-post-Newtonian wave generation formalism. We compute: (i)
A. Papapetrou +10 more
core +8 more sources
Continuation of the exponentially small transversality for the splitting of separatrices to a whiskered torus with silver ratio [PDF]
, 2014 We study the exponentially small splitting of invariant manifolds of whiskered (hyperbolic) tori with two fast frequencies in nearly-integrable Hamiltonian systems whose hyperbolic part is given by a pendulum. We consider a torus whose frequency ratio is
A Delshams +35 more
core +5 more sources
Control Strategy for Long-Term Station-Keeping on Near-Rectilinear Halo Orbits
, 2020 This work considers the control of a spacecraft in indefinite near-rectilinear halo orbit about the Earth-Moon L2. For indefinite station-keeping, it is important to minimize fuel consumption, while allowing for occasional transfer to a new orbit.
V. Muralidharan, A. Weiss, Uros Kalabic
semanticscholar +1 more source
Non-Cooperative Target Ranging Based on High-Orbit Single-Star Temporal–Spatial Characteristics
Applied SciencesA visible light camera payload with star-sensitive functionality was installed to measure the distance between a non-cooperative target satellite and a high-orbit satellite. The rotation matrix was used to calculate the pointing vector from the center of
Derui Zhang, Hao Wang, Qing Zhao
doaj +1 more source
Analytic orbit propagation for transiting circumbinary planets
, 2015 The herein presented analytical framework fully describes the motion of coplanar systems consisting of a stellar binary and a planet orbiting both stars on orbital as well as secular timescales.
Eggl, Siegfried, Georgakarakos, Nikolaos
core +2 more sources
Evidence for Warped Disks of Young Stars in the Galactic Center [PDF]
, 2009 The central parsec around the super-massive black hole in the Galactic Center hosts more than 100 young and massive stars. Outside the central cusp (R~1") the majority of these O and Wolf-Rayet (WR) stars reside in a main clockwise system, plus a second,
A. Sternberg +85 more
core +5 more sources