Results 71 to 80 of about 311,790 (337)
POST Launch Mission Analysis for the KOMPSAT-1 [PDF]
Journal of Astronomy and Space Sciences, 2000 The post-launch mission analysis of the KOMPSAT-1 spacecraft was carried out. The injection accuracy of the Taurus launch vehicle was analyzed by comparison of the target and the realized orbit parameters.
Byoung-Sun Lee +2 more
doaj
A review of fade detection techniques [PDF]
Several proposed propagation fade detection techniques are reviewed in light of general requirements presented for beacon fade characterization. The discussion includes an analysis of phase lock versus frequency lock beacon tracking loops and of excess ...
Pergal, F. J.
core +1 more source
Advanced Optical Materials, EarlyView.A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova +5 more
wiley +1 more source
Plan of advanced satellite communication experiments using ETS-6 [PDF]
In 1992, an Engineering Test Satellite 6 is scheduled to be launched by an H-2 rocket. The missions of ETS-6 are to establish basic technologies of inter-satellite communications using S-band, millimeter waves and optical beams and of fixed and mobile ...
Ikegami, Tetsushi
core +1 more source
Advanced Optical Materials, EarlyView.A comparative study of the optical and polaritonic properties of excitons in hBN‐encapsulated monolayer TMDs close to the homogeneous linewidth is presented. Reflection spectroscopy with transmission‐line modeling enables extraction of the complex permittivities and demonstrate their ability to host surface‐exciton‐polaritons.
Matan Meshulam +6 more
wiley +1 more source
A Study on Fuel Estimation Algorithms for a Geostationary Communication & Broadcasting Satellite [PDF]
Journal of Astronomy and Space Sciences, 2000 It has been developed to calculate fuel budget for a geostationary communication and broadcasting satellite. It is quite essential that the pre-launch fuel budget estimation must account for the deterministic transfer and drift orbit maneuver ...
Jong Won Eun
doaj
The AMSC mobile satellite system: Design summary and comparative analysis [PDF]
Mobile satellite communications will be provided in the United States by the American Mobile Satellite Consortium (AMSC). Telesat Mobile, Inc. (TMI) and AMSC are jointly developing MSAT, the first regional Mobile Satellite Service (MSS) system. MSAT will
Noreen, Gary K.
core +1 more source
Satellite system performance assessment for in-flight entertainment and air traffic control [PDF]
, 2007 Concurrent satellite systems have been proposed for IFE (In-Flight Entertainment) communications, thus demonstrating the capability of satellites to provide multimedia access to users in aircraft cabin. At the same time, an increasing interest in the use
Bousquet, Michel +3 more
core +1 more source
Enhancing Triplet Excitons Lifetime Through Controlled Intermolecular Interactions
Advanced Optical Materials, EarlyView.Singlet fission (SF) is investigated in pentacene embedded in a surface‐anchored metal–organic framework, enabling a molecular arrangement inaccessible in pure organic crystals. This architecture changes the singlet fission dynamics significantly and enhances the triplet lifetime by almost four orders of magnitude.
Martin Richter +9 more
wiley +1 more source
Coding for reliable satellite communications [PDF]
This research project was set up to study various kinds of coding techniques for error control in satellite and space communications for NASA Goddard Space Flight Center.
Gaarder, N. T., Lin, S.
core +4 more sources