Results 171 to 180 of about 35,657 (302)

Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin, Laurent Castanet, Laurent Féral, Xavier Boulanger   +3 more
wiley   +1 more source

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

Development and Performance Assessment of Single- and Double-Layer TbAG:Ce and YAG:Ce Composite Scintillators on GAGG:Ce Substrates for Optimized α-γ Discrimination and Pulse-Shape Analysis. [PDF]

Materials (Basel)
Bachiri A, Syntfeld-Każuch A, Gorbenko V, Witkiewicz-Lukaszek S, Zorenko T, Syrotych Y, Adamowski L, Swiderski L, Stasiv V, Zhydachevskyy Y, Zorenko Y.   +10 more
europepmc   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Cognitive Radio-Based Ionospheric Scintillation Detection: A Low-Cost Framework for GNSS Detection and Monitoring in Equatorial Regions. [PDF]

Sensors (Basel)
Rodríguez JO, Dos Santos WA, Candido CN, Traslaviña DS, Tafur CL, Daza PM, Rodríguez Barón IF.   +6 more
europepmc   +1 more source

Monolithic Opto‐Acoustic Synesthetic Transduction of Color and Sound in a Single Chiral Liquid Crystal Elastomer

Small, EarlyView.
Monolithic cholesteric liquid crystal elastomers simultaneously generate color and sound under electrically programmed stimuli. Low‐frequency electric fields modulate the helical pitch to produce tunable structural colors, while high‐frequency excitation induces membrane vibration for acoustic emission.
Ji Yoon Park, In Pyo Hong, Seohyun Woo, Jun Hyuk Shin, Sang Hyun Han, Hak Jun Yang, Su Seok Choi   +6 more
wiley   +1 more source

Beam-axis stability during gantry rotation measured with scintillation dosimetry. [PDF]

J Appl Clin Med Phys
Ohira S, Ohta T, Sugaya H, Suzuki T, Nozawa Y, Minamitani M, Katano A, Hayashi T, Yamashita H, Nakagawa K.   +9 more
europepmc   +1 more source

Scintillation detectors

, 1993
In this article we first describe characteristics of scintillator materials which are of practical importance in these days in nuclear and high-energy physics, starting with inorganic materials, then organic scintillators and finally, very briefly, glass
Hildenbrand, K.D., Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)   +1 more
core  

Synthesis of Samarium‐incorporated X‐ray‐sensitive nanoparticles and hydrogels: Diverse applications in radiation monitoring and dynamic information display

Smart Molecules, EarlyView.
Sm3+‐doped α‐NaLuF4 and β‐NaLuF4 were synthesized. The X‐ray‐activated persistent luminescence abilities and afterglow properties can be well controlled. Sm3+‐doped β‐NaLuF4 exhibits remarkable afterglow ability. The hexagonal β‐NaLuF4:3%Sm3+‐incorporated hydrogel can be further programmed with other types of hydrogels to enable tunable emission ...
Zetong Zhang, Yujie Chen, Yuanyao Chen, Leipeng Li, Yonggang Wu, Yanmin Yang, Hailei Zhang   +6 more
wiley   +1 more source

Realizing 303 ps Ultrafast Scintillation Time in 2-Inch CsPbCl₃ Single Crystals Grown Under Br₂ Overpressure. [PDF]

Materials (Basel)
Yang J, Wang F, Chen L, Bo T, Chai Z, Lin W.   +5 more
europepmc   +1 more source