Radio Communication - Science topic

Indonesia, located in the “Ring of Fire” zone, is a tsunami-prone area, especially those earthquake-induced. Therefore, a tsunami early warning system is crucial for reducing potential damage. Ina-TEWS is an Indonesian tsunami early warning system that relies on buoys, uses seismic sensors to detect a tsunami, sends out its warning within 5 min. In...

In the technology world, the wireless network is more flexible and adaptable compared to the wired network. Because it is easy to install and does not require cables. Also, there have been many recent advances in the area of WNs (Wireless Networks), which have undergone rapid development. WNs have emerged as a prevailing technology due to their wid...

The quest to deepen the relevance of community media in the Ghanaian media landscape is paramount. There is a considerable history of community radio stations in Ghana. However, knowledge of the history of Radio Progress, a community-based radio station domiciled in Wa, the capital of the Upper West Region, is still blurry. Drawing mainly on interv...

Community radio creates an avenue for the community members to be a part of content development, its creation and broadcasting. The extent of community participation may vary with different stations. The present case study attempts to look into the Tribal participation in content development process of Radio Mattoli, a community radio from Kerala....

Community media is widely recognized as a tool to give voice to the voiceless. This study investigates the transformative potential of community media in India as a vehicle for promoting inclusive development and enhancing democracy. The research aims to examine the distinctive ways that community media promotes diverse viewpoints, local content, a...

This research paper throws light on impact of community radio programs in rural development. It helps to address the linguistic and ethnic diversity and plug all socioeconomic and rural-urban gaps in the society. The broadcast content are relevant to a specific audience, thus, providing a platform to the local voices (individuals, groups and commun...

The amateur radio community is a global, highly engaged, and technical community with an intense interest in space weather, its underlying physics, and how it impacts radio communications. The large-scale observational capabilities of distributed instrumentation fielded by amateur radio operators and radio science enthusiasts offers a tremendous op...

In this article, using the mathematical modeling of the operation process of the radio communication network based on IP technologies under the conditions of information impact when transmitting a non-repetitive data stream, the mathematical expectation of the packet transmission time between the relevant nodes, the function of the safe and success...

The problem of modeling an energy receiver of ultra-wideband chaotic radio pulses for chaotic radio communications is studied. As is shown, a combination of numerical and analytical modeling completes the problem of calculating characteristics of ultra-wideband chaotic communication systems. On the one hand, the numerical method is effective for ca...

Abstract The frequency dependence of transmitted information qualitative indicators is analyzed on the example of two meridional radio links: single-hop (~2600 km) and dominant two-hop (~5100 km) for basic modes of radio wave propagation in the ionosphere. It is shown that the presence of highly efficient receiving-transmitting antennas in a radio...

Solar flares are explosions on the Sun. They happen when energy stored in magnetic fields around solar active regions (ARs) is suddenly released. Solar flares and accompanied coronal mass ejections are sources of space weather, which negatively affects a variety of technologies at or near Earth, ranging from blocking high-frequency radio waves used...

Due to the increase in natural disasters world over, there is need to come up with effective disaster risk reduction strategies, including early warning systems. Zimbabwe has faced multiple hazards and disasters including, tropical cyclones, floods, and droughts. This study therefore seeks to implement both an early warning system and communication...

The aim of this paper is to create an autonomous reconfigurable radio communication system that can produce an adequate transmission rate according to propagation medium fluctuation while maintaining a higher quality of service (QoS). In this work, we have achieved an experimental implementation of adaptive modulation technique using SDR platforms...

In the era of globalization and cataclysmic revolution of ICTs, mainstream media, both print and virtual, along with android mobiles are dominating for providing news, information services and entertainment. Besides, in some countries community radios (hereafter CRs) contributing to positive changes in grassroots governance and development. Based o...

Densification of networks through heterogeneous cells deployment is considered a key technology to satisfy the huge traffic growth in future wireless systems. In addition to achieving the required communication capacity and efficiency, another significant challenge arises from the broadcast nature of wireless channels: vulnerability to wiretapping....

The radio communication division of the International Telecommunication Union (ITU-R) has recently adopted Integrated Sensing and Communication (ISAC) among the key usage scenarios for IMT-2030/6G. ISAC is envisioned to play a vital role in the upcoming wireless generation standards. In this work, we bring together several paramount and innovative...

This study aims to determine the effect of x-ray radiation resulting from solar flares in high-frequency radio wave communications through the ionosphere and to study the radio blackout events that occur over Iraq, located within (38,28) latitude, and (38,49) longitude. Using X-ray data during strong X flares and radio wave absorption data across t...

This paper presents an investigation of the Radio-Frequency (RF) performance of the UHF antenna employed on the Sample Retrieval Lander (SRL) for the planned Mars Sample Return campaign. The antenna would be used for the radio communication with the orbital spacecraft and its operation is impacted by the presence of the lander deck, instruments loc...

A software-defined radio (SDR) system is a radio communication system which uses software for the modulation and demodulation of radio signals. An SDR performs significant amounts of signal processing in a general purpose computer, or a reconfigurable piece of digital electronics. SDR can talk and listen to multiple channels at the same time, also...

At this time there are various types of equipment for electronic communication or often called telecommunications equipment that can be used by the public. Difficulties for students who do not have or master the use of the latest telecommunications equipment, and live in areas that are not covered by telecommunications networks. Of course there mus...

Optical Wireless Communication (OWC) is one of the possible technologies that will come into wider use in the coming years. Its more significant influence is described by the authors in connection with the sixth-generation (6G) networks. Today, we can come across various Light Fidelity (LiFi) or Visible Light Communication (VLC) applications. The s...

A helicopter in flight can be considered an unstable dynamic system with many unwanted vibrations originating from multiple sources, such as the operation of the engines and individual components. These vibrations cause the degradation of the structural and functional components of a helicopter, thereby generally reducing the utility and technical...

High data rates are one of the most prevalent requirements in current mobile communications. To cover this and other high standards regarding performance, increasing coverage, capacity, and reliability, numerous works have proposed the development of systems employing the combination of several techniques such as Multiple Input Multiple Output (MIM...

For small solar aspect angles radio communications with spacecrafts are affected by solar plasma disturbances of the solar wind ejected by the Sun. These cause path length variations for the radio beam which in particular cause amplitude scintillations at the receiving site on Earth. It is shown that the relative amplitudes of these scintillations...

We report on observations of 68 satellites belonging to the SpaceX Starlink constellation with the LOFAR radio telescope. Radiation associated with Starlink satellites was detected at observing frequencies between 110 and 188 MHz, which is well below the 10.7– 12.7 GHz radio frequencies used for the downlink communication signals. A combination of...

We report on observations of 68 satellites belonging to the SpaceX Starlink constellation with the LOFAR radio telescope. Radiation associated with Starlink satellites was detected at observing frequencies between 110 and 188 MHz. A combination of broad-band features, covering the entire observed bandwidth, as well as narrow-band (bandwidth < 12.2...

Underwater acoustic channel is a challenging medium for communication due to the presence of significant multipath, high noise, frequency‐dependent propagation loss, and high and non‐uniform Doppler spread. Doppler shift is non‐negligible in underwater communication due to the low velocity of underwater signals. Synchronization and Doppler estimati...

Wireless radio communications provide a backbone to our technological civilization. However, radio communications are widely believed to be impossible in many situations where radios are surrounded by conductive media, such as underwater or underground, thus making ocean exploration difficult and creating well-known mine safety problems. In additio...

Women's participation in community radio, is critical to maintaining local interest in development initiatives. In Northern Ghana women have historically been excluded from the dialogues that lead to the transformation of their communities. Community radio presents an opportunity for rural women to participate in the public sphere. The use of radio...

Many different kinds of machinery and systems, including electronic ones, are used in operating ships at sea. New ideas for improving already-existing systems and devices are proliferating in response to recent developments in electronics, radio communications, and computer science. The International Maritime Organisation (IMO) has strict regulatio...

In the age of globalization and ICTs revolution, conventional media are playing sine qua non role in providing news, information services, and entertainment. Besides, in some countries, community radios (hereafter CRs) are contributing to positive changes in grassroots governance and development. Based on a reality, this paper tries to unravel the...

Recent advancements in communication technologies employ and use artificial intelligence (AI) algorithms to provide quality network services and efficiency to the end user. AI has evolved and progressed in virtually every aspect of human endeavour since its inception a few decades ago. Likewise, radio communication in the telecommunications sector...

Over the years, journalism has evolved with newer technologies, new complexities in societies and legalities with a tremendous responsibility to keep the equilibrium of democracy. Community journalism, a newer form of journalism, aims to address community needs and aspirations. Tinder (1980) urges journalists to create dialogical inquiry between th...

The rapid advancement of technology in the field of unmanned aerial vehicles (UAVs) has created new possibilities for their application in numerous fields. For every unmanned aerial system it is essential to contain a ground control station (GCS), which must comply with mission-specific requirements. This paper presents the results of our research...

Purpose: Electromagnetic tracking (EMT) is beneficial in image-guided interventions to reduce the use of ionising radiation-based imaging techniques. Enabling wirelessly tracked sensors will increase the usability of these systems for catheter tracking and patient registration systems. This work introduces a novel method of wirelessly transmitting...

The ability of modern departmental communication systems to perform tasks in conditions of radio-electronic suppression by the enemy characterizes their immunity to interference. It is known that the interference protection of radio equipment in conditions of enemy radio reconnaissance and electronic suppression can be described by a set of probabi...

The Saturnian moon Enceladus presents a unique opportunity to sample the contents of a subsurface liquid water ocean in situ via the continuous plume formed over its south polar terrain using a multi-flyby mission architecture. Previous analyses of the plume’s composition by Cassini revealed an energy-rich system laden with salts and organic compou...

image UPCOMING IIPV3EBS13_G23 Futuristic Trends in Network & Communication Technologies Hosting Date: 2023-12-31 Deadline Date: 2023-08-31 Category: Edited Book Organized By: IIP List of Editors: Mr Advin Name: Mr Advin IIP ID: IIPER1678516962 Dr T sivakami Name: Dr T sivakami IIP ID: IIPER1680165412 Dr Ezhilazhagan Chenguttuvan Name: Dr Ezhi...

Student radio stations are an important part of the media environment in Slovakia. Our research focused on obtaining information on the functioning of these stations, including their legal regulation, training of new members and formal integration into university structures. Student radio stations have several rights and obligations secured by the...

This chapter examines community radio as a form of indigenous community media for constructing a community and building an identity. This study is based on an ethnographic study of Radio Swayamshakti (RS), an indigenous community radio station in the Nuapada district of the eastern Indian state of Odisha. Furthermore, this study tries to investigat...

The empowerment of women is linked to the gender concept. Community radios are playing crucial role in educating women about their rights. They provide opportunities to learn and improve their skills because it is essential for economic development of women. Besides this, it also promotes social, political and cultural empowerment of women. The pre...

In recent years, the use of millimeter-wave bands has been considered for radio communication systems between train and trackside. Millimeter-wave band radio waves are known to have strong linearity and high attenuation on Non-Line-of-Sight (NLoS). On the other hand, it has been reported that they propagate to NLoS by the effects of rails and side...

Mobile-health (m-health) is described as the application of medical sensors and mobile computing to the healthcare provision. While 5G networks can support a variety of m-health services, applications such as telesurgery, holographic communications, and augmented/virtual reality are already emphasizing their limitations. These limitations apply to...

The ionospheric sporadic E (Es) layer is the intense plasma irregularities between 80 and 130 km in altitude, which is generally unpredictable. Reconstructing the morphology of sporadic E layer is not only essential for understanding the nature of ionospheric irregularities and many other atmospheric coupling systems, but also useful to solve a bro...

Wireless Networks like Mobile Adhoc Networks (MANETs) have been under extensive research over the past few years with congestion control as one of the most important features to ensure efficient and fair sharing of network resources among users. Machine learning (ML) has achieved a success rate in addressing large-scale and complex problems and res...

The micro and small unmanned aerial vehicles (msUAVs) internet of things has been widely used in different fields. At the same time, the disordered flight of msUAVs inevitably become a potential threat to public security (such as airports, railway stations, major event venues, etc.). In view of the safety problem of msUAVs, the anti-micro and small...

The synthesis method of the incoherent demodulation procedure of two synchronous mutually non-orthogonal digital signals with frequency modulation is considered. In the absence of interference this procedure degenerates into the procedure of classical incoherent demodulation of a digital signal with frequency modulation. When the instantaneous powe...

Maritime safety relies on navigation, detection, and radio communication technologies that function through electromagnetic radiation. Propagation of electromagnetic radiation can be impacted by a disruptive phenomenon known as ducting. Our four-week study using a X-band coastal radar and various meteorological and marine observations, including ve...

In the radio telemetry systems of spacecraft, various data compression methods are used for data processing. When using any compression methods, the data obtained as a result of compression is formed randomly, and transmission over radio communication channels should be carried out evenly over time. This leads to the need to use special buffer stor...

As one of the most important radio communication scenarios in vertical industry, the high-speed railway (HSR) station is facing the challenge of coverage optimization due to its complex structure. Regarding the wireless network planning and optimization of HSR stations as a part of the customized network, this paper makes an analysis on the 5G-R ch...

A Vessel Traffic Service (VTS) plays a central role in maritime traffic safety. Regulations are given by the International Maritime Organization (IMO) and Guidelines by the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA). Accordingly, VTS facilities utilize communication and sensor technologies such as an Au...

The evolution of mobile technology and computation systems enables User Equipment (UE) to manage tremendous amounts of data transmission. As a result of current 5G technology, several types of wireless traffic in millimeter wave bands can be transmitted at high data rates with ultra-reliable and small latency communications. The 5G networks rely on...

Objectives This study aims to investigate the hierarchical effects of two-way communication through a model linking OPDC (Organization-Public Dialogic Communication), RADIO (Relationship Assessment of Diplomatic Interaction Outcome), NREC (national role expectation confirmation), and megaphoning in a public diplomacy setting. Methods A survey was c...

Climate-related disasters, including hydrometeorological disasters, have increased over the last decade, accounting for more than 90% of all-natural disasters in Indonesia. To reduce the risk of disaster, the hydrometeorological disaster must be mitigated. The research, carried out at Sukakerti and Tugumukti villages in West Java, aimed at assessin...

This paper introduces a multilingual automatic speech recognizer (ASR) for maritime radio communi-cation that automatically converts received VHF radio signals into text. The challenges of maritime radio communication are described at first, and the deep learning architecture of marFM consisting of audio processing techniques and machine learning a...

As researchers around the globe develop applications for the use of Automatic Speech Recognition and Understanding (ASRU) in the Air Traffic Management (ATM) domain, Air Traffic Control (ATC) language ontologies will play a critical role in enabling research collaboration. The MITRE Corporation (MITRE) and the German Aerospace Center (DLR), having...

Background: Farmers in riverine areas face the dual challenge of determining the most suitable crop to cultivate and the appropriate technologies to use. The media could be helpful in assisting farmers to address these challenges. Objectives: The aim of this study was to examine the contributing role of the media in educating farmers in riverine ar...

Most of Community radio (CR) stations in Uganda are run, managed, controlled and owned by the communities for easy service delivery to the population living in those communities. Meanwhile, few radio stations are owned and controlled by non governmental organizations (NGOs), private individuals and government to monitor service delivery of these in...

The study investigated the community radio as a tool that promotes community participation in local governance. Multi-stage random sampling method and purposive method was adopted. Data collection was undertaken using questionnaire and interviews. The datawascollected in three Sectors (Muzo, Kivuruga and Gakenke) of Gakenke District in Northern Pro...

The ionospheric state is becoming increasingly important to forecast for the reliable operation of terrestrial and space-based radio-communication systems which are influenced by ionospheric space weather. In this study, we have investigated and tested a multivariate long short-term memory (LSTM) deep learning model for its forecasting accuracy ove...

The rural Dwellers in Nigeria are not adequately informed like their urban counterparts. Many newsworthy events, which should be reported by the media, are not given attention in the rural areas. Radio, which is the most listened to and favourite of the rural dwellers has not aldo done enough to re-orientate, educate, and mobilise the rural dweller...

Mass media have been an indispensable fulcrum of development, especially in the West from where they were imported to Africa. However, realities on the African continent have failed and weakened the potential of mass media as resources for development, as vast population of Africans live in the rural areas without access to mass media. Besides, tho...

Due to the propagation characteristics in the 2.5 GHz band, the signal is significantly degraded by building entry loss (BEL), making coverage in indoor environments in some cases non-existent. Signal degradation inside buildings is a challenge for planning engineers, but it can be seen as a spectrum usage opportunity for a cognitive radio communic...

Unmanned Aerial System (UAS) is an aspect of close range remote sensing and photogrammetry method that provides excellent and timely spectral and spatial services for rapid identification of details due to the low altitude of flight and identification of a clear water surface, topographic mapping and analysis, vegetation monitoring, land use change...

Community radio may have a significant impact on the public's rejection of odd ideas and conservative reasoning, as well as the government's support for minorities, women, and reverse networks. A large portion of the neighborhood in Nepal gets news and programming from radio. The majority of Community radios have been unable to provide media employ...

With the advancement of technology, the use of streaming media by media petitioners has taken a quantum leap in recent years. The use of webcasting is now common in PSB (public sector broadcasting) across the globe. With the adaptation of the latest technology and its use in different program formats, Radio Pakistan has planned to use the best stre...

Este artigo apresenta o desenvolvimento de um sistema de controle de apoio a tomada de decisão baseado em um colete sensorizado com tecnologia embarcada e vestível destinado a ser aplicado como um assistente pessoal na realização de tarefas complexas em situações de risco. Os eventos paralelos não associadas diretamente a ação principal e que podem...

Resumo: Este artigo apresenta o desenvolvimento de um sistema de controle de apoio a tomada de decisão baseado em um colete sensorizado com tecnologia embarcada e vestível destinado a ser aplicado como um assistente pessoal na realização de tarefas complexas em situações de risco. Os eventos paralelos não associadas diretamente a ação principal e q...

The growing cognizance of spectrum scarcity has become a more significant concern in wireless radio communications. Due to the exponential growth of data transmission in intelligent wireless sensor networks, energy spectrum detection has become a promising solution for resolving spectrum shortages. Primary user emulation attack (PUEA) has been iden...

Large stratospheric balloons are the easiest access to near space. Large long duration balloons (LDBs) can float in the stratosphere for weeks collecting measurements (e.g., astrophysical or geophysical data) or samples (e.g., contaminants, volcanic ash, micrometeorites). The recovery of data media and samples is a common problem in this type of ex...

Plain Language Summary Using satellite data, just as the acoustic noise from distant lightning is heard to rumble, sometimes a considerable time later, for a much longer duration than the visible flashes, an even more greatly delayed and spread‐out series of plasma‐sound waves are found in the earth's ionosphere after every lightning bolt. The nois...

The demands of the technologies of the future such as autonomous vehicles, Internet of Things and mixed reality require communications platforms equipped to handle huge quantities of data. Higher frequency communication bands are attractive but have limitations in terms of data loss particularly during wireless transmission. Free-space optical (FSO...