Signals satellite communications. Medical search. Frequent questions

T. Ramírez , Mosquera, C. , and López-Valcarce, R. , " Two-Level Frame Precoding with non-Cooperative Gateways " , EURASIP Journal on Wireless Communications and Networking , 2020. (uvigo.es)
London-based OneWeb - whose investors include Virgin Group, Coca-Cola, and Softbank - recently launched 34 OneWeb satellites into orbit, the first of 10 launches in 2020. (nokia.com)
The paper, which was presented at the flagship conference IEEE International Conference on Communications 2020, demonstrates a complete satellite transmission scenario applying full frequency reuse - an upcoming technique for V/UHTS satellites to further improve the spectral efficiency of satellite systems. (unibw.de)

Low earth orbit (LEO) satellite communications are expected to be incorporated in future wireless networks, in particular 5G and beyond networks, to provide global wireless access with enhanced data rates. (arxiv.org)
The satellite, in orbit about the Earth, receives the signal and then transmits it back to earth stations. (udel.edu)
Traditional communication satellites are geostationary and have been in orbit for more than 50 years. (nokia.com)
Despite Earth's orbit, this allows ground-based antennas the ability to point directly at the satellite, in a fixed position. (nokia.com)
In contrast, Low Earth Orbit (LEO) satellites are miniaturized, orbiting versions that operate between 500 and 2000 kilometers above Earth's surface and weigh under 500kg. (nokia.com)
Due to its low orbit, latency is significantly reduced as the satellite is better positioned to quickly receive and transmit data. (nokia.com)
In February, SpaceX launched its fifth batch of 60 Starlink satellites to orbit. (nokia.com)
This will bring around 300 Starlink satellites currently in orbit with a long-term goal of 30,000. (nokia.com)
PARIS - Europe's Ariane 5 rocket on Feb. 6 placed commercial and military telecommunications satellites into orbit in the first of what operator Arianespace expects could be its busiest-ever year. (spacenews.com)
The builders of both satellites said the spacecraft were healthy in orbit and sending signals. (spacenews.com)
ABS assembled its current five-satellite fleet, at three orbital slots, since 2006 by purchasing older satellites already in orbit. (spacenews.com)
As the number of low Earth orbit (LEO) satellites continues to increase, ground stations must contend with escalating noise floors and complex RF interference challenges. (wirelessdesignonline.com)
In the 1960s, the U.S. government began using satellites for military and government communications, and the first commercial satellite called "Early Bird" went into orbit . (directv.com)
The communications satellites used for TV broadcasting exist in geostationary orbit and transmit and receive TV signals sent from TV studios or broadcasting hubs. (directv.com)
The ground controllers will park the spacecraft in geostationary orbit at 52 degrees east longitude, where the satellite will hover over the equator as it circles Earth at the same speed of the planet's rotation. (un-spider.org)
There are even solutions that allow us to stay connected far out in the wilderness by using satellites which orbit the Earth. (lu.se)

They can affect satellites and electrical power. (brighthub.com)
It will likely cause at least a strong geomagnetic storm that could affect satellites in space and trigger auroral displays. (enewspf.com)

A signal jammer is a device used to interfere with radio frequencies, and its use in satellite communication systems raises many interference and safety concerns. (worldjammer.com)
Moreover, silicon devices are not suitable for high-frequency applications or high-power applications such as satellite communication and TV transmission & reception and can be replaced with GaN-based RF devices as they provide more efficient operation at higher frequencies. (marketsandmarkets.com)
RF filters are electronic components used to allow or prevent selected signals or frequencies to eliminate noise or pass through unwanted signals. (marketsandmarkets.com)
If Korea is saying the sale to ABS is in effect nullified, then that means the satellite has been without a regulatory 'home' for more than two years, and under international frequency rules this could oblige Korea to forfeit its rights to the frequencies," the official said. (spacenews.com)
Satellite transmission frequencies are usually expressed in gigahertz (GHz). (eutelsat.com)
A time-scale which forms the basis of a coordinated dissemination of standard frequencies and time signals throughout the world. (eutelsat.com)
These are some of the most common types of satellite dishes for higher frequencies used by broadband or satellite services. (directv.com)

SIGNAL 2023, The Seventh International Conference on Advances in Signal, Image and Video Processing, continues the inaugural event considering the challenges mentioned above. (iaria.org)
Global Underwater Wireless Communication Market PR.pptx - The global underwater wireless communication market is estimated to garner a revenue of USD 2000 million by the end of 2033 by growing at a CAGR of ~15% over the forecast period, i.e., 2023 - 2033. (powershow.com)

Vector signal generators from Rohde & Schwarz support all relevant frequency bands and all major standards, including DVB-RCS2/-S2, DVB-S2X with beam hopping and OneWeb. (rohde-schwarz.com)

You'll perform signal support and technical assistance for computer systems, local area networks, and you'll perform maintenance on equipment, terminal devices, power generators, and vehicles. (goarmy.com)
A. Tato , Mosquera, C. , and Gómez, I. , " Link adaptation in mobile satellite links: field trials results " , in 8th Advanced Satellite Multimedia Systems Conference and 14th Signal Processing for Space Communications Workshop , 2016. (uvigo.es)
T. Ramírez and Mosquera, C. , " Full-duplex operation in two-way broadcast service for maritime applications " , in 8th Advanced Satellite Multimedia Systems Conference and 14th Signal Processing for Space Communications Workshop , 2016. (uvigo.es)
V. Joroughi and Mosquera, C. , " The impact of feeder link interference in multiple gateway multibeam satellite systems " , in 8th Advanced Satellite Multimedia Systems Conference 14th Signal Processing for Space Communications Workshop , 2016. (uvigo.es)
Data tampering and theft: Due to the emergence of signal jammers, hackers and malicious users may use signal jammers to transmit malicious data or steal sensitive information, resulting in tampering or leakage of data in satellite communication systems. (worldjammer.com)
Threats to military security: The use of signal jammers may cause serious interference to military communication systems, making it impossible for the enemy to send and receive messages normally, which seriously interferes with military operations. (worldjammer.com)
Information theft: Hackers and malicious users may use signal jammers to steal sensitive information in satellite communication systems, including business secrets and military intelligence. (worldjammer.com)
Malicious attacks: The emergence of signal jammers may also lead to other malicious attacks, including denial of service attacks, hacking, etc., which further damage the security of satellite communication systems. (worldjammer.com)
Technical intervention: Satellite communication systems can introduce some technical means to prevent interference from signal jammers, such as signal filtering, spectrum monitoring and other technical means. (worldjammer.com)
Encryption and authentication: Strengthen data encryption and user identity authentication in satellite communication systems to reduce the risk of information leakage and unauthorized access. (worldjammer.com)
Safety awareness education: Strengthen the safety awareness education of satellite communication systems, improve users' safety awareness, and avoid interference and attacks by signal jammers. (worldjammer.com)
The interference and safety of signal jammers to satellite communication systems is a problem worthy of attention. (worldjammer.com)
By improving technical means, formulating laws and regulations, strengthening encryption and authentication, and strengthening security awareness education, we can better deal with the interference and security challenges brought by signal jammers and ensure the normal operation and security of satellite communication systems. (worldjammer.com)
Signal, video and image processing constitutes the basis of communications systems. (iaria.org)
Anritsu offers Spectrum Analyzer and Spectrum Monitoring systems to help optimize performance and identify sources of interference common to satellite systems. (anritsu.com)
Massive MIMO techniques, though widely used in terrestrial communication systems, have not been applied to LEO satellite communication systems. (arxiv.org)
In this paper, we propose a massive MIMO transmission scheme with full frequency reuse (FFR) for LEO satellite communication systems and exploit statistical channel state information (sCSI) to address the difficulty of obtaining instantaneous CSI (iCSI) at the transmitter. (arxiv.org)
Numerical results demonstrate that the proposed massive MIMO transmission scheme with FFR significantly enhances the data rate of LEO satellite communication systems. (arxiv.org)
Huge demand for RF signal chain components market is generated by the aerospace & defense sector, especially before the war conditions as the communication systems aid forces on the war grounds. (marketsandmarkets.com)
Armed with high budgets, these countries are investing substantial amounts in enhancing their defense capabilities by upgrading their radar security systems and tactical communication systems. (marketsandmarkets.com)
As an ultra-wideband microwave signal, amplitude shift keying (ASK) can be used in many applications, such as electronic warfare, wireless communications and modern radar systems. (phys.org)
One of these filters, whose output signal has an in-band to out-of-band energy ratio of 20 dB at 1.4 Nyquist frequency, may find near-future applications in some satellite communication systems. (harvard.edu)
High-throughput satellite communication systems are growing in strategic importance thanks to their role in delivering broadband services to mobile platforms and residences and/or businesses in rural and remote regions globally. (arxiv.org)
This paper enhances the performance of multi-beam high throughput geostationary satellite systems under congestion, where the users' quality of service (QoS) demands cannot be fully satisfied with limited resources. (arxiv.org)
With on-ground MU-MIMO precoding for spatial multiplexing and advanced synchronization algorithms, the authors prepared and implemented an end-to-end testbed for the next generation of UHTS and fractionated satellite systems. (unibw.de)
ABS has two satellites - all-electric spacecraft built by Boeing Space and Intelligence Systems of El Segundo, Calif. - under construction and scheduled for launch in the next two years. (spacenews.com)
During his doctorate, he spent six months at the "Laboratory for Information and Decision Systems", Massachusetts Institute of Technology (MIT), Cambridge, and at the "Signal and Information Processing Laboratory", ETH, Zürich. (polito.it)
A ship's AIS transponder (the device that sends and receives signals) uses a very high frequency (VHF) RF transmitter to broadcast important information to receiver devices on other ships or land-based systems. (spire.com)
The robust, comprehensive product offerings of Wireless Telecom Group provide the solutions necessary to enable the continued advancement and innovation of 5G satellite communications systems. (wirelessdesignonline.com)
In addition, the arrival of the geomagnetic storm could affect systems including GPS navigation satellite signals and satellite communications. (enewspf.com)
In satellite communication systems, the spectrum of a transmitted signal depends upon the modulation scheme employed. (eutelsat.com)
Research activities in digital communications and systems addressed by the SC group are focused on signal processing, modeling and coding for satellite and wireless communication systems. (irit.fr)

The Soyuz carried the Pleiades 1A optical high-resolution Earth observation satellite, four ELISA electronic intelligence satellites and the SSOT remote sensing spacecraft for Chile. (spaceflightnow.com)
The Thales Alenia Space will transfer control of the spacecraft to Turkmenistan's Ministry of Communications by early June, giving the country command of its first satellite. (un-spider.org)

A. Rico-Alvariño , Tato, A. , and Mosquera, C. , " Robust Adaptive Coding and Modulation Scheme for the Mobile Satellite Forward Link " , in IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC , 2015. (uvigo.es)
Moreover, since the implementation platforms experience an exponential growth in terms of their performance, many signal processing techniques are reconsidered and adapted in the framework of new applications. (iaria.org)
With a product portfolio including peak power meters, signal generators, phase noise analyzers, signal processing modules, 5G and LTE PHY/stack software, noise sources, and programmable noise generators, Wireless Telecom Group supports the development, testing, and deployment of wireless technologies around the globe. (wirelessdesignonline.com)
I IEEE International Workshop on Machine Learning for Signal Processing (MLSP) IEEE - Institute of Electrical and Electronics Engineers Inc. Sept. pp.1-6, 2021. (lu.se)

2.316 The Royal Signals and Radar Establishment (RSRE) was a scientific research establishment within the Ministry of Defence (MoD) of the United Kingdom. (wikipedia.org)
these included the Royal Radar Establishment (RRE), itself derived from the World War II-era Telecommunications Research Establishment, the Signals Research and Development Establishment (SRDE) in Christchurch, Dorset, and the Services Electronic Research Laboratory (SERL) at Baldock. (wikipedia.org)
Some of the most important technologies developed from work at RSRE are radar, satellite communications, thermography, liquid crystal displays, speech synthesis and the Touchscreen. (wikipedia.org)
The payload is a radar reconnaissance satellite. (spaceflightnow.com)

While other satellites communicate with Earth using physics worked out by James Clerk Maxwell 150 years ago, Micius is the world's first quantum-enabled satellite. (theconversation.com)
A transmission is sent from a station on Earth to the satellite. (udel.edu)
This transmission signal back to earth is called a downlink. (udel.edu)
In the near future, 5G signals will beam down from space and support our 'terrestrial' 5G infrastructure on Earth. (nokia.com)
GEO satellites weigh more than 1000kg and operate 36,000 kilometers above the earth. (nokia.com)
Topic-wise the report covers a broad range from manned space flight and earth observation to new space, communications and navigation as well as cybersecurity. (unibw.de)
It is therefore likely that satellites orbiting Earth will experience increased radiation levels today as a result," says Juha-Pekka Luntama, Head of Space Weather in ESA's Space Situational Awareness office. (enewspf.com)
Communication with mission control on Earth was equally impossible. (ex-parrot.com)
From there, the signals beam straight back down to Earth. (directv.com)
A contract to develop and demo a two-way, through-the-earth communication system for mines that applies state-of-the-art communications technologies to overcome subterranean wireless communication challenges while meeting industrial safety standards. (cdc.gov)

Once the TV signals from the orbiting satellites reach your satellite dish, they run through a cable to the receiver box, which decodes those signals and sends the picture to your TV. (directv.com)
Wireless Communication: Satellites - Parabolic dish antenna sends signal to receiving dish. (powershow.com)

These new results pave the way for space-based quantum communication, a technology that promises to provide truly secure communication across the globe . (theconversation.com)
Background borrowed from Hughes Space and Communications Company Home Page . (udel.edu)
But, to launch a satellite of to the space from U.S. soil requires that the USA (Federal Aviation Authority) allows it. (stackexchange.com)
The end result is a new space race for satellites - promising to offer customers a seamless wireless experience across the entire globe. (nokia.com)
A new space race is emerging among tech companies to deploy LEO satellite constellations to deliver high-speed internet service to emerging markets and business customers. (nokia.com)
The research center SPACE and the Munich Center of Space Communications have been awarded a grant issued by the German Government to perform a small satellite mission. (unibw.de)
Until 2024, the mission called SeRANIS (Seamless Radio Access networks for Internet of Space) will demonstrate various radio communication technologies as well as GNSS and radio science experiments on a small satellite platform. (unibw.de)
And with more advances in satellite constellations and ground stations, the amount and quality of data that can be collected from space is increasing. (spire.com)
Held in Washington, D.C., SATELLITE 2022 brings together thought leaders in the space and satellite industries, cultivating new technologies and solutions that drive innovation forward from March 21 to March 24, 2022. (wirelessdesignonline.com)
A Russian government Proton rocket and Breeze M upper stage launched the Israeli Amos 5 communications satellite and the Russian space agency's Luch 5A data relay satellite. (spaceflightnow.com)
Believe it or not, the history of satellite television goes back to Russia's launch of Sputnik in the 1950s and the start of the space race. (directv.com)
They point directly toward satellites in space. (directv.com)
After waiting 49 minutes for clouds to thin out, the Falcon 9 rocket lifted off into space with a satellite for Turkmenistan from Cape Canaveral spaceport this Monday (April 27). (un-spider.org)
A contract to explore early detection of rock movement signaling imminent underground space or pit wall collapse in mines, which has the potential to prevent loss of life and serious injuries from mine disasters. (cdc.gov)

The new Emergency SOS via Satellite function on the iPhone 14 range is an impressive tool for serious emergencies when out of phone signal. (t3.com)
A contract to test the efficacy of deploying a vehicular satellite communication system, augmented with rapidly deployable mesh networking nodes and other emerging telecommunications technologies, during mine rescue and other emergency events. (cdc.gov)
with the 121.5 MHz signals, before an emergency response can be launched, the beacon-initiated signals have to be sorted out from the false signals. (cdc.gov)
Tonga's triggering an unprecedented plume of smoke and Prime Minister declared a State of Emergency, although, ash, and a tsunami that struck low-lying coastal areas of with communication channels inoperable, the needs in Tonga's most populous island of Tongatapu, the nearby the kingdom's outer islands were not initially known. (who.int)

Could you theoretically launch your own satellite and transmit satellite phone signals to it? (stackexchange.com)
This was the first satellite ever used to transmit telecommunications and broadcasting services. (directv.com)

It interferes with the normal reception and transmission of signals by the target device by sending high-power interference signals, so that the target device cannot work normally. (worldjammer.com)
The 406 MHz EPIRBs are digital instruments, and as such, have identification codes that will allow the COSPAS/SARSAT system to distinguish between signals from beacons and interference signals from miscellaneous unrelated sources. (cdc.gov)

The winning publication entitled "Multi-Satellite Multi-User MIMO Precoding: Testbed and Field Trial" has been authored by Robert Schwarz and Kai-Uwe Storek. (unibw.de)
The communication technologies include advanced beamforming and precoding for 6G networks, robust and resilient IoT and LPWAN technologies as well as optical / laser communications and artificial intelligence methods. (unibw.de)

A new tool for generating microwave signals could help propel advances in wireless communication, imaging, atomic clocks, and more. (phys.org)

The satellite communication (SATCOM) market experienced a significant surge in growth, with a valuation of USD 27.56 billion in 2021. (scoop.it)
By surpassing the USD 29.98 billion mark in 2022, the SATCOM market is set to witness continued expansion, driven by various factors such as increasing demand for connectivity, advancements in satellite technology, and the growing need for reliable and secure communication networks. (scoop.it)

Researchers calculated a significant carbon footprint for some Internet service-providing satellite constellations. (acm.org)
Each of these companies recognizes the potential of private satellite constellations to not only provide Internet connectivity to rural areas but satisfy the global networking services of tomorrow. (nokia.com)

With wide coverage and broadcast capabilities, satellites are well-positioned to support IoT. (nokia.com)
RF power sensors with superior performance and capabilities that are uniquely suited to capture and test high-speed 5G TDD satellite signals. (wirelessdesignonline.com)
From 5G gNodeB to noise generation to best-in-class T&M capabilities, the vast experience and expertise within Wireless Telecom Group can solve a myriad of challenges faced by the satellite industry," says Matthew Diessner, Sales Director. (wirelessdesignonline.com)

When equipped with satellite signal generation options, Rohde & Schwarz vector signal generators are innovative RF and millimeterwave measurement solutions that help customers successfully design, develop and test satellite payloads, payload subsystems and components. (rohde-schwarz.com)
Comprehensive satellite component and payload testing with realistic signals and scenarios is a must. (rohde-schwarz.com)

AIS is a communications system based on radio frequency (RF), which is a form of wireless communications that uses the transmission and reception (sending and receiving) of electromagnetic waves. (spire.com)
For this to work, the satellite dish must point at the correct satellite without any obstructions (or the reception isn't good). (directv.com)
Reception and transmission of the 406 signal is not hindered by the "line of sight" requirement of the 121.5 unit. (cdc.gov)
The transmission and reception of electric impulses or signals by means of electric waves without a connecting wire, or the use of these waves for the wireless transmission of electric impulses into which sound is converted. (bvsalud.org)

Parsippany, NJ (GLOBE NEWSWIRE) - Wireless Telecom Group, Inc. (NYSE American: WTT), announced today that it will showcase its unique solutions for testing a variety of satellite communications during SATELLITE 2022 at Booth 243. (wirelessdesignonline.com)
Camilla Broms, Mikael Nilsson, Andreas Oxenstierna, Alexandros Sopasakis* and Karl Åström (2022), Combined analysis of satellite and ground data for winter wheat yield forecasting , Accepted Aug. 2022, Smart Agricultural Technology, To Appear 2022. (lu.se)

The SRDE establishment moved to a RSRE facility at RAF Defford near Malvern in 1980, which had the benefit of flat terrain for good satellite dish positioning and the nearby Bredon Hill for satellite simulators. (wikipedia.org)
The larger the wavelength, the bigger the antenna (satellite dish) necessary to receive it. (udel.edu)
A solid satellite dish is a single, solid piece of material. (directv.com)

The wideband baseband of the R&S®SMW200A together with the R&S®FSW signal and spectrum analyzer with its R&S®FSW-K18 amplifier measurement option are ideal for measuring gain transfer functions. (rohde-schwarz.com)
The R&S®SMW200A vector signal generator and the R&S®FSW signal and spectrum analyzer are a lean and convenient solution for measuring DUT group delay. (rohde-schwarz.com)

However, with that comes an intensification of the problem of radio frequency interference, of which signal jammers are a big source. (worldjammer.com)
The use of signal jammers will not only affect the normal operation of the satellite communication system, but may also cause a series of security problems. (worldjammer.com)
There are two main types of signal jammers, active signal jammers and targeted signal jammers. (worldjammer.com)
Signal quality degradation: Due to the interference of signal jammers, the signal quality of the satellite communication system will be affected, resulting in a decrease in communication quality and a slowdown in communication speed. (worldjammer.com)
Communication interruption: In severe cases, signal jammers may cause a complete interruption of the satellite communication system, making normal communication impossible. (worldjammer.com)
Laws and regulations: Establish and improve the supervision system of signal jammers, formulate relevant laws and regulations to clarify the legal scope of use of signal jammers, and punish illegal use of signal jammers. (worldjammer.com)

Some microwaves can even pass through clouds, which make them the best wavelength for transmitting satellite communication signals. (nasa.gov)

National surveillance requires adequate infrastructure, including trained personnel, within the states and local communities and timely communications among state and local health departments, public and private laboratories, health care providers, and CDC. (cdc.gov)

Notably, the Aspire 400 satellite communication system is lightweight and takes into account the operator's choice of either a high-gain antenna or an intermediate-gain. (nasdaq.com)

By the 1990s, direct-to-home television became much more popular, and people could use satellites to beam the hottest TV shows straight into their living rooms. (directv.com)

Korea's Ministry of Science and Information, Communications and Telecommunication in December ordered KTSat to regain ownership of ABS-7, formerly named Mugungwha-3/Koreasat 3. (spacenews.com)

Are commercial communications satellites in GEO being constantly monitored by telescopes? (stackexchange.com)
France and Italy will be able to operate the satellite separately, but will need to consult each other constantly to assure they avoid interference. (spacenews.com)
Meanwhile, our opportunity of always being connected has led to our applications, the apps and programs we use, constantly being in communication with the network. (lu.se)

With the increasing development of satellite communication technology, satellite communication system has become an important part of modern communication. (worldjammer.com)
Amazon is asking the FCC to support an expeditious grant to operate a system comprising 3,236 satellites. (nokia.com)
Honeywell International Inc. HON recently announced the availability of Aspire 400, its newest satellite communications system. (nasdaq.com)
AIS transponders on nearby ships or on land (for example, a vessel traffic services system) receive these signals. (spire.com)
An in-booth demonstration will highlight how to test for system robustness and resilience in the presence of this interference by generating controllable and sophisticated noise signals to test an amplifier to its noise tolerance limits. (wirelessdesignonline.com)
Custom noise generation solutions that replicate potential RF interference a satellite system may encounter once deployed. (wirelessdesignonline.com)
Signal for communications: waveform design, digital receivers, communication system modeling and performance. (irit.fr)
Section 2 of the OMSHR advanced tutorial on wireless communication and electronic tracking covering communication system performance. (cdc.gov)
A project to enhance the understanding of underground mining communication and tracking system performance through the development and validation of radio signal propagation models. (cdc.gov)
These beacons were part of the SARSAT system of satellites in which a signal from a 121.5 beacon would be picked up by one or several satellites, transmitted to a land-based terminal, then transmitted to a mission control center, and finally to a rescue coordination center. (cdc.gov)

Russia has accelerated its jamming of GPS satellites around Moscow, apparently to deter long-range strikes by Ukrainian drones, according to GPSJam. (acm.org)

Then, we develop the low-complexity sCSI based downlink (DL) precoder and uplink (UL) receiver in closed-form, aiming to maximize the average signal-to-leakage-plus-noise ratio (ASLNR) and the average signal-to-interference-plus-noise ratio (ASINR), respectively. (arxiv.org)
In addition, time division duplex (TDD) is pivotal for 5G satellite communications networks due to its optimizations to spectrum management, but success hinges on rapid uplink/downlink signal switching that maintains reliability and precision. (wirelessdesignonline.com)

These signals are only transmitted on certain frequency bands. (udel.edu)

Appendix B of the OMSHR advanced tutorial on wireless communication and electronic tracking covering basic equations. (cdc.gov)
List of acronyms and abbreviations used in the OMSHR advanced tutorial on wireless communication and electronic tracking. (cdc.gov)

Athena-Fidus represents the high-water mark thus far of European collaboration in military satellite telecommunications. (spacenews.com)
The French and Italian militaries have agreed to divide the cost of the Sicral 2 telecommunications satellite, operating in X- and UHF band, and scheduled for launch later this year. (spacenews.com)
This 52 degrees east slot is registered by the International Telecommunications Union to Monaco giving the satellite its unusual name: TurkmenAlem52E/MonacoSat. (un-spider.org)

We first establish the massive MIMO channel model for LEO satellite communications and simplify the transmission designs via performing Doppler and delay compensations at user terminals (UTs). (arxiv.org)
Delamotte has developed an innovative multiple-input-multiple-output (MIMO) approach for high-speed communication links between ground stations and geostationary Very High Throughput Satellites (VHTS). (unibw.de)

The coverage area of a satellite is called the satellite's footprint. (udel.edu)
Unfortunately, this also creates a smaller coverage area so LEO satellites continuously hand off communication signals and traffic across a constellation of satellites. (nokia.com)
IoT sensors and M2M connections on farms and remote worksites like mines can also capitalize on the wide coverage areas offered by 5G satellites. (nokia.com)

Certain infectious diseases such as multidrug-resistant (MDR) TB, meningococcal meningitis, and botulism warrant prompt detection of all cases because they cause substantial morbidity and mortality, require specific public health interventions, or may signal a potential outbreak. (cdc.gov)

Magnetic storms can affect radio signals and communications. (brighthub.com)
Radio astronomy and satellite communication have a long common history. (phys.org)
From October 1994 to September 1997, he was with the Radio Link Laboratory of Marconi Communications in Genoa, where he worked on all-digital high rate modems. (polito.it)
For the past 15 years, radio communications have been spread over six radio channels on the 450 UHF band. (cdc.gov)

A unique signal state of a modulation scheme used on a transmission link, which conveys one or more information bits to the receiver. (eutelsat.com)

How does China's quantum satellite work? (theconversation.com)
What Is Satellite TV & How Does It Work? (directv.com)
One of the best things about satellite TV is it is usually available in areas where other types of TV services don't work. (directv.com)

The proposed algorithm is asymptotically optimal in the sense that the lower and upper bounds of the achievable rate coincide when the number of satellite antennas or UT groups is sufficiently large. (arxiv.org)

The National Search and Rescue Committee, made up of the Departments of Interior, Defense, Transportation, Commerce (NOAA), Homeland Security (USCG), NASA, and the Federal Communications Commission, is implementing the phase-out of the 121.5/243 MHz units. (cdc.gov)

This signal is called an uplink. (udel.edu)

Adjacent frequency emissions from other signals with significantly higher power levels. (anritsu.com)

For years, satellite communication has remained standalone technology, independent of mobile networking. (nokia.com)
That's why we're also proud to say DIRECTV has 99% signal reliability, plus our exclusive SignalSaver™ technology that allows you to keep watching during inclement weather. (directv.com)
Technology has made great strides in the last several years, to the point where satellites and transmitting beacons can team up to give rescuers very precise data about vessels, planes, and people in distress. (cdc.gov)

For instance, a critical factor in calculating fire emissions is identifying fire activity information (e.g., location, date/time, fire type, and area burned) and prior estimations of prescribed fire activity used for calculating emissions have either used burn permit records or satellite-based remote sensing products. (cdc.gov)

LEO Satellites will play a key part in extending cellular 5G networks to air, sea and other remote areas not covered by small cell networks. (nokia.com)
The PI3K/Akt/mTOR signaling pathway may play a key role in controlling this process. (bvsalud.org)

Tactical UK Military Satellite Ground Terminals - A Research and Development Review (PDF) (Report). (wikipedia.org)

For the end-user, satellites offer a seamless extension of 5G services from the city to airplanes, cruise liners and other vehicles in remote locations. (nokia.com)
While they will not be able to provide a full set of services, they can still retain critical and life-saving communication services during disasters. (nokia.com)
After all, we can now watch TV and movies from the internet with streaming services … but millions of Americans are still satellite TV subscribers. (directv.com)
We offer satellite services to millions of Americans every day so you can access the shows and movies you love. (directv.com)
As health needs became increasingly complex in a rapidly changing and volatile environment, partners' response covered a broad range of activities, such as the provision of medical supplies and equipment, primary health care, treatment and referral of trauma patients, mental health and psychosocial support, sexual and reproductive health care including gender-based violence services, risk communication and community engagement, as well as capacity-building of health care workers. (who.int)

RF interference represents the single largest impact to robust satellite operation performance. (anritsu.com)
Solutions from Rohde & Schwarz are ideal for characterization and validation and meet customer performance, cost and scheduling needs for testing on the physical layer and with common satellite transmission standards. (rohde-schwarz.com)
A second demonstration will capture the swift performance of TDD pulses with leading test instrumentation to enable next-generation high-performance satellite communications. (wirelessdesignonline.com)
High-performance, low phase noise satellite signal generation. (wirelessdesignonline.com)

Carrying 23 Ka-band and EHF-band transponders, it will operate at 38 degrees east to provide broadband communications for French and Italian government customers. (spacenews.com)

Predecessor organisation Signals Research and Development Establishment (SRDE) had been involved in the development of military communications satellites, within the U.S. Interim Defense Communication Satellite Program (IDCSP) and the development of the British Skynet 1 and 2 satellite types. (wikipedia.org)
An Introduction to Military Satellite Communications (PDF) (Report). (wikipedia.org)
and the French-Italian Athena-Fidus Ka- and EHF-band military and civil-government communications satellite. (spacenews.com)
A Soyuz rocket and Fregat upper stage failed in the launch of a Meridian military communications satellite for the Russian armed forces. (spaceflightnow.com)

Offset satellite dishes receive signals differently than traditional satellite dishes. (directv.com)

The magazine archive includes every article published in Communications of the ACM for over the past 50 years. (acm.org)
The new satellite functionality will be available free of charge to all iPhone 14 users (including Plus and Pro versions) for two years. (t3.com)

7.1 Crisis communication in human emergencies. (who.int)

A signal jammer is an electronic device that interferes with the normal communication of a target device by generating a jamming signal. (worldjammer.com)
The Inmarsat's SwiftBroadband-Safety service strengthens communications safety in the cockpit by providing a separate and secure data channel such as text messaging with air traffic control or in-flight tracking and electronic flight bag applications. (nasdaq.com)

An Arianespace Soyuz rocket launched six second-generation Globalstar mobile communications satellites. (spaceflightnow.com)
A Chinese Long March 4B rocket launched the Ziyuan 1-2C mapping satellite. (spaceflightnow.com)
A Chinese Long March 3B rocket launched the Nigcomsat 1R satellite for Nigeria. (spaceflightnow.com)
The Japanese H-2A rocket launched an Information Gathering Satellite for the Japanese government. (spaceflightnow.com)
A Long March 3A rocket launched a Beidou navigation satellite for the Chinese government. (spaceflightnow.com)
A Chinese Long March 2C rocket launched the Yaogan 13 reconnaissance satellite. (spaceflightnow.com)
A Russian Soyuz rocket launched a Glonass M navigation satellite for the Russian government. (spaceflightnow.com)

The impressive demonstration involved two co-located geostationary satellites that jointly utilize a common frequency band as well as two COTS DVB-S2x receivers. (unibw.de)

Anatomy2

Organisms1

Diseases1

Chemicals and Drugs5

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Psychiatry and Psychology5

Phenomena and Processes7

Technology, Industry, Agriculture1

Information Science8

Health Care3

20203

Orbit16

Affect satellites2

Frequencies7

20232

OneWeb1

Systems32

Spacecraft2

Processing4

Radar4

Earth10

Sends2

Space14

Emergency4

Transmit2

Interference signals2

Precoding2

Advances1

SATCOM2

Constellations2

Capabilities3

Payload2

Reception4

20222

Dish3

Spectrum Analyzer2

Jammers6

Wavelength1

Personnel1

Notably1

Beam1

Telecommunication1

Constantly3

System10

Moscow1

Downlink2

Frequency bands1

Wireless communication2

Telecommunications3

MIMO2

Coverage3

Detection1

Radio4

Modulation1

Work3

Antennas1

NASA1

Uplink1

Significantly1

Technology3

Emissions1

Play a key2

Ground1

Services5

Performance4

Operate1

Military4

Differently1

Years2

Emergencies1

Electronic2

Rocket7

Impressive1