Results 81 to 90 of about 306,809 (340)
Secure voice for mobile satellite applications [PDF]
The initial system studies are described which were performed at JPL on secure voice for mobile satellite applications. Some options are examined for adapting existing Secure Telephone Unit III (STU-III) secure telephone equipment for use over a digital ...
Berner, Jeff, Vaisnys, Arvydas
core +1 more source
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.This study reveals the potential to manipulate spin‐valley polarization dynamics in MoSe2/WSe2 heterostructures by quantifying different scattering processes following selective photoexcitation. The results show that these heterostructures enable ultrafast valley‐selective charge transfer, with phonon scattering playing a significant role in the ...
Julian Wagner +9 more
wiley +1 more source
The Selection of Altitude and Inclination for Remote Sensing Satellites [PDF]
Journal of Astronomy and Space Sciences, 1995 The success of a satellites mission is largely depended upon the choice of an appropriate orbit. In the case of a remote sensing satellite which observes the Earth, there exits an optimum solar elevation angle depending on the mission.
Jeong-Sook Lee, Byoung-Sun Lee
doaj
Research Trends in Utilizing Artificial Intelligence in Satellite-Based Internet of Things: A Scientometric Analysis [PDF]
فصلنامه علوم و فناوری فضاییToday, according to the development of satellite-based hybrid networks -that are able to provide diverse and new services to the most parts of the planet-, the designers of such networks are encouraged to use new communication technologies such as the ...
Pedram Hajipour +3 more
doaj +1 more source
An overview of Space Communication Artificial Intelligence for Link Evaluation Terminal (SCAILET) Project [PDF]
A software application to assist end-users of the link evaluation terminal (LET) for satellite communications is being developed. This software application incorporates artificial intelligence (AI) techniques and will be deployed as an interface to LET ...
Petrik, Edward J. +3 more
core +1 more source
Mode‐dependent Far‐field Radiation of Circularly Polarized Light by a Single Plasmonic Nanohelix
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.The numerical simulations explored the chiroptical response and far‐field radiation behaviors of single plasmonic nanoantennas transitioning into helical structures. This study highlights the ability of these plasmonic nanohelices to regulate the far‐field directionality of radiation power and circular polarization in plasmon‐exciton coupled systems ...
Yiou Cui +10 more
wiley +1 more source
A Novel LFM Waveform for Terahertz-Band Joint Radar and Communications over Inter-Satellite Links [PDF]
, 2022 Gizem Sümen +2 more
openalex +1 more source
Direct Broadcast Satellite: Radio Program [PDF]
NASA is committed to providing technology development that leads to the introduction of new commercial applications for communications satellites. The Direct Broadcast Satellite-Radio (DBS-R) Program is a joint effort between The National Aeronautics and
Hollansworth, James E.
core +1 more source
Integration of Satellites in 5G through LEO Constellations
, 2017 The standardization of 5G systems is entering in its critical phase, with 3GPP that will publish the PHY standard by June 2017. In order to meet the demanding 5G requirements both in terms of large throughput and global connectivity, Satellite ...
Guidotti, Alessandro +2 more
core +1 more source
Enhanced Light–Matter Interactions With a Single Sn Nanoantenna on Epitaxial Graphene
Advanced Optical Materials, EarlyView.Surface Enhanced Raman Spectroscopy (SERS) is a leading method for surpassing the diffraction limit in analytical detection and exploring light‐matter interactions. In this study, a single plasmonic Sn nanoantenna is employed on epitaxial graphene, achieving extraordinary enhancement of graphene Raman signals.
Zamin Mamiyev +3 more
wiley +1 more source