Results 61 to 70 of about 296,490 (359)
A generalized transmultiplexer and its application to mobile satellite communications [PDF]
A generalization of digital transmultiplexer technology is presented. The proposed method can realize transmultiplexer (TMUX) and transdemultiplexer (TDUX) filter banks whose element filters have bandwidths greater than the channel spacing frequency ...
Ichiyoshi, Osamu
core +1 more source
Advanced Satellite Communications
Academic Journal of Engineering Studies, 2020 Applications of satellite communications has broader usage; for instance, voice, video calling, internet, fax, television, and radio communications. There are abundant and various types of satellites that has applications from amplification of radio telecommunications to military applications and most importantly its application is globally, and it ...
openaire +2 more sources
Tracking systems for satellite communications
IEE Proceedings F Communications, Radar and Signal Processing, 1988 Satellites in nominally geostationary orbits possess diurnal motion which causes the apparent position of the spacecraft to wander in the sky as seen by an earth station. If uncompensated this causes a variation in the performance of the communications link. The motion of the satellite therefore has to be tracked by the earth station antenna.
Hawkins, GJ, Edwards, DJ, McGeehan, JP
openaire +4 more sources
Advanced Optical Materials, EarlyView.A new heavy‐atom‐free, donor–acceptor‐type organoboron luminophore has been synthesized, which exhibits red room‐temperature phosphorescence (RTP) in the crystalline state. Furthermore, the amorphous solid generated by grinding shows green thermally activated delayed fluorescence (TADF), displaying distinct mechanochromic luminescence (MCL) through ...
Yohei Adachi +7 more
wiley +1 more source
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
The Journal of Engineering, 2016 The design of spectrally-efficient, high-throughput satellite (HTS) systems with capacity approaching one terabit per second requires operating at Ka-band frequencies and above, where there are several gigahertz of allocated radio spectrum, using ...
Abdulkareem Sarki Karasuwa +2 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Here, recent progress is highlighted in colloidal magnetoplasmonic hybrid nanomaterials, with a focus on chiral plasmonics. Metal nanocrystals with intrinsic chiroptical features can lead to a combination of chiral plasmonics and magneto‐optics effects when interacting with the magnetic counterpart, offering a foundation for systematically designing ...
Miguel Comesaña‐Hermo +4 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
Interim Service ISDN Satellite (ISIS) network model for advanced satellite designs and experiments [PDF]
The Interim Service Integrated Services Digital Network (ISDN) Satellite (ISIS) Network Model for Advanced Satellite Designs and Experiments describes a model suitable for discrete event simulations.
Hager, E. Paul, Pepin, Gerard R.
core +1 more source
Enhanced THz Emission From Ultrathin Ta/Fe/Pt Spintronic Trilayers
Advanced Optical Materials, EarlyView.Ultrathin Ta/Fe/Pt spintronic trilayers on MgO(100) substrates generate intense terahertz (THz) emission under femtosecond laser pulse excitation. Constructive interference of the emitted THz waves from Ta and Pt layers is maximized through crystallographic engineering of the Ta layer into a high‐resistivity fcc phase and optimization of the trilayer ...
Evangelos Th. Papaioannou +8 more
wiley +1 more source