41   Artículos

 
en línea
Mohammed Saïd Kasttet, Abdelouahid Lyhyaoui, Douae Zbakh, Adil Aramja and Abderazzek Kachkari    
Recently, artificial intelligence and data science have witnessed dramatic progress and rapid growth, especially Automatic Speech Recognition (ASR) technology based on Hidden Markov Models (HMMs) and Deep Neural Networks (DNNs). Consequently, new end-to-... ver más
Revista: Aerospace    Formato: Electrónico

 
en línea
Vladimir Ulansky and Ahmed Raza    
The operable state of a system is maintained during operation, which requires knowledge of the system?s state. Technical diagnostics, as a process of accurately obtaining information about the system state, becomes a crucial stage in the life cycle of an... ver más
Revista: Aerospace    Formato: Electrónico

 
en línea
Soyeong Lee and Yong Bae Park    
In this paper, a miniaturized very-high frequency (VHF) band antenna using both top and bottom meander lines is proposed. To design a compact size antenna in the VHF band, a Composite Right/Left-Handed (CRLH) transmission line is applied to antenna struc... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Lorenzo Frezza, Paolo Marzioli, Fabio Santoni and Fabrizio Piergentili    
The usage of aeronautical radio-frequency navigational aids can support the future stratospheric aviation as back-up positioning systems. Although GNSS has been extensively redundant in the last years of space operations, radio NavAids can still be suppo... ver más
Revista: Aerospace    Formato: Electrónico

 
en línea
Sanjin Valcic, Antonio ?krobonja, Lovro Maglic and Boris Svilicic    
Maritime non-commercial communications are performed using the equipment of Global Maritime Distress and Safety System (GMDSS), under the International Convention for the Safety of Life at Sea (SOLAS). This equipment includes numerous devices of differen... ver más
Revista: Journal of Marine Science and Engineering    Formato: Electrónico

 
en línea
Sungsik Wang, Hongsuk Shim and Hosung Choo    
This article is related to passive radars using public broadcast signals in the VHF band.
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Won Bin Park, Young-Mi Park and Keum Cheol Hwang    
In this letter, an electrically small Spidron fractal loop antenna operating in the VHF band is proposed. The ferrite material, which consists of a nickel-zinc combination, is loaded into inside of the loop antenna to increase the gain of the antenna in ... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Aylin Gözalan, Ole John, Thomas Lübcke, Andreas Maier, Maximilian Reimann, Jan-Gerrit Richter and Ivan Zverev    
Communication for processing relevant information plays a paramount role in developing a comprehensive understanding of Search and Rescue (SAR) situations and conducting operations in a successful and reliable manner. Nevertheless, communication systems ... ver más
Revista: Journal of Marine Science and Engineering    Formato: Electrónico

 
en línea
Yi Jiang, Yang Zheng and Junsen Wang    
VHF Data Exchange System (VDES) is considered as an important component of the future maritime communication system by the International Maritime Organization (IMO). On the basis of the existing Automatic Identification System (AIS), VDES adds the other ... ver más
Revista: Journal of Marine Science and Engineering    Formato: Electrónico

 
en línea
Felix Scholkmann    
The public is unknowingly exposed to very high-frequency sound (VHFS; 11.2?17.8 kHz) and ultrasound (US; >17.8 kHz) signals in air in public places, as evidenced by previously published reports. The present report provides evidence for the presence of VH... ver más
Revista: Acoustics    Formato: Electrónico

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