Articles tagged with Radio Signals
Astronomers have found that a distant galaxy is nestled in a serene ocean of gas, defying expectations and providing new insights into the composition of galaxy halos. The discovery was made possible by a new technique involving fast radio bursts, which allowed researchers to study the gas directly.
Scientists at University of Illinois replicate Hall Effect with photons, enhancing one-way radio transmission and absorbing opposing signals. The technique could protect sources from interference and ensure accurate quantum measurements.
The NIST team used cesium atoms to receive digital bits in phase shifting format, receiving up to 5 megabits of data per second. The atom-based system showed decent accuracy with an error vector magnitude (EVM) below 10 percent.
Deshima, a Japanese-Dutch joint development, successfully obtained the first spectra and images of cosmic radio waves. The instrument achieves an ideal balance between frequency range and spectroscopic performance using innovative nanotechnology.
Scientists at KIT have developed a promising approach to converting data streams between the terahertz and optical domains using ultra-rapid electro-optical modulators. This technology has the potential to reduce technical complexity of future radio base stations and enable terahertz connections with high data rates.
Researchers examine SKA-MPG telescope prototype for its ability to investigate cosmic background radiation with ultra precision. The study provides new insights into the origin of the Universe and explores potential applications in gravitational wave detection and dark energy research.
Researchers have developed ultra-sensitive light-detecting systems that can view galaxies and planetary systems in superb detail. The system works at room temperature, unlike current technology which requires extremely low temperatures.
Researchers using the radio telescope ALMA have detected a galaxy in the early Universe 13 billion years ago, which is actually two galaxies merging together. The team observed signals of oxygen, carbon, and dust from the galaxy B14-65666, providing the earliest evidence of merging galaxies yet discovered.
Scientists have successfully recorded and played back music using Rydberg atoms, which respond to radio waves, enabling potential improvements in audio data transmission. The research could lead to better noise-picking capabilities and improved security in deep space communications.
Marko, a wireless movement-tracking system, transmits low-power radio-frequency signals to analyze reflections and associate them with specific individuals. The system traces movement patterns to provide insights into behavior and health, offering a new passive way to track functional health profiles of patients at home.
Researchers at KIT have discovered needle-shaped structures in positively charged plasma channels, which may explain why lightning does not always discharge at once. The discovery was made using high-resolution data from the LOFAR radio telescope.
Researchers have demonstrated the real-world utility of direct antenna modulation (DAM) for boosting radio signal quality when transmitting at high data rates. The method has applications in military communications and can improve signal quality dramatically with much smaller antennas.
Researchers at Delft University of Technology have created a quantum circuit that enables the detection of weak radio signals, which could revolutionize fields like radio astronomy and medicine. The breakthrough opens up possibilities for experiments that explore the interplay between quantum mechanics and gravity.
SNoOPI will validate remote-sensing technique called signals of opportunity to measure soil moisture from space, a crucial step towards determining water stored in snowpack and soil root zones. The mission will reuse existing telecommunications signals, eliminating the need for large antennas.
A novel system developed at MIT uses RFID tags to help robots home in on moving objects with unprecedented speed and accuracy. The system, called TurboTrack, can locate tagged objects within 7.5 milliseconds, on average, and with an error of less than a centimeter.
Physicists at Kazan Federal University developed a refined simulation of joint reception areas for meteor radio reflections. The study reveals that unpredictable nature of meteors makes signal interception challenging, with practical possibilities disappearing at 30 km distances.
The new approach uses Miura-Ori patterns to create tunable filters, enabling devices to change which signals they block throughout a large range of frequencies. This technology has various applications in antenna systems and electromagnetic cloaking systems.
Researchers at NIST developed a measurement-based method for evaluating optimal antenna designs, reducing signal interference and delays. The method allows designers to select the best beamwidths for real environments, increasing network capacity and reliability.
Researchers from Siberian Federal University and Kirensky Institute of Physics suggest a novel method for creating dynamically controlled diffraction gratings in atomic media. This approach eliminates existing limitations by utilizing Raman-type interaction between signal radiation and pump waves.
A team of astronomers used the Moon as a reference point to measure the brightness of the Milky Way, helping them detect faint signals from hydrogen atoms in the infant Universe. This detection could confirm or refute theoretical models of the Universe's early evolution.
EPFL scientist Claudio Grimaldi has developed a statistical model to calculate the probability of detecting extraterrestrial signals, increasing the chances of finding intelligent life. The model employs Bayes' theorem to interpret success and failure rates at varying distances from Earth.
A team of UCSB students, led by Philip Lubin, are searching for signs of alien life in Andromeda using a suite of telescopes and photonic technology. They aim to detect potential signals from civilizations using optical beams that could be visible across the universe.
UCLA engineers have developed a new computational tool that accurately models how magnetic materials interact with incoming radio signals at the nanoscale. This allows for the design of next-generation communications devices with improved data transport capabilities and reduced noise interference.
Researchers at MIT Media Lab have developed a system called TARF that uses underwater sonar signals to transmit data to airborne receivers, breaking through the water-air barrier. The system consists of an underwater acoustic transmitter and a highly sensitive receiver that decodes the vibrations caused by the sonar signal.
A team from MIT's CSAIL has developed a system that uses artificial intelligence to analyze radio signals bouncing off people's bodies, allowing for dynamic stick figures to be created of their postures and movements. This technology could monitor diseases like Parkinson's and MS, as well as provide security for elderly people.
University of Illinois engineers create 3D rolled-up transformers that take up to 100 times less space, perform better, and have a simpler fabrication process than traditional designs. The new design enables high-frequency signals and integration into IoT applications.
Researchers have demonstrated a light-based system that can avoid jamming in wireless communication networks, using a neural algorithm inspired by a cave-dwelling fish. The system could enable more efficient use of limited bandwidth and reduce costs for service providers.
Researchers achieved 20 Gbit/s data transmission over a converged fiber-wireless network in the 90-GHz band, enabling smooth and uninterrupted communication for high-speed trains. Ultra-fast switching of optical paths to remote radio stations was also demonstrated, making handover-free communication possible.
Case Western Reserve University researchers achieve cat-like 'hearing' with a device tens of trillions of times smaller than the human eardrum, enabling ultralow-power communications and sensory devices with greater detection ranges.
Researchers using a unique radio antenna detected a clear signal from the earliest stars in the universe, revealing the formation of these massive, blue, and short-lived stars within 180 million years of the Big Bang. The discovery provides new insights into the early universe's mysteries and potential connections to dark matter.
A team of astronomers has detected the fingerprints of the earliest stars in the universe, revealing a wealth of information about their formation and evolution. The detection provides the first evidence for the oldest ancestors in our cosmic family tree, born just 180 million years after the universe began.
Researchers at Arizona State University and Tel Aviv University have discovered dark matter using radio wave signals from the early universe. The detection provides direct proof that dark matter exists and is composed of low-mass particles.
Researchers from MIT and Arizona State University have detected faint signals of hydrogen gas from the primordial universe, tracing them back to just 180 million years after the Big Bang. The discovery indicates that the first stars may have started turning on around this time, causing hydrogen atoms to absorb background radiation.
The NASA Goddard Space Flight Center has confirmed that a satellite re-discovered on Jan. 20, 2018, is the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) satellite. The satellite was launched in 2000 and had been declared mission-ended after repeated failures.
After an amateur astronomer recorded observations of a satellite in high Earth orbit on Jan. 20, 2018, NASA coordinated the use of five separate antennas to acquire radio frequency signals from the object. The signals matched the expected characteristics of the IMAGE mission, suggesting it could be the lost satellite.
Researchers at Clemson University aim to fortify computers and devices against cyberattacks using GPS spoofing, with potential effects on cell phones, power grids, and scientific data. The team plans to create a secure timing solution by securing GPS receivers and Network Time Protocol.
Recent observations of FRB 121102 provide new data about the source of fast radio bursts, which are nearly 100 percent linearly polarized and suggest a source embedded in strong magnetic fields. The team plans to observe at higher frequencies to narrow the range of possible sources.
Researchers at NIST have demonstrated a quantum method for detecting digitally modulated magnetic signals that can travel through building materials and water. The technology has the potential to improve communication range and accuracy in environments where GPS signals are weak or unreliable.
Researchers at Brown University developed a new technique that enhances NMR signal strength and versatility for studying nanomaterials and exotic states of matter. By using flat NMR coils, the team was able to optimize signal detection for various sample shapes and experiment types.
Cornell University engineers have developed a method to gather blood pressure, heart rate, and breath rate using cheap, covert systems of radio-frequency signals and microchip tags. The system integrates near-field coherent sensing, allowing for accurate measurement of internal body movement.
The ShakeAlert system, developed for the US West Coast, is fine-tuning a U.S. prototype that could be in limited public use in 2018. Key components include dense networks of seismic stations and education/training on using alerts.
Tingyi Gu, an assistant professor at the University of Delaware, has received a $450,000 grant from the Air Force Office of Scientific Research to develop high-speed and low-power optical interconnects. Her research aims to improve the performance and scalability of devices made with two-dimensional materials.
Dartmouth researchers create customized reflectors using 3-D printing to optimize wireless coverage, strengthening signals while making them more secure. The technology reduces interference and costs, offering improved performance and physical security for a fraction of the cost of traditional solutions.
The HRL team will use magnetoelastic material for man-portable low-frequency radio antennas, enabling communication in traditionally radio-denied conditions. The project aims to create a communications system that transmits at less than a thousand hertz and is man-portable.
Researchers at UW demonstrated long-range backscatter system that can transmit data across distances of up to 2.8 kilometers with extremely low power consumption. The system enables practical use in medical monitoring, smart cities, and precision agriculture.
A Brazilian company's device uses low-field NMR to analyze food products in a few seconds, measuring sugar content, fat content, moisture, tenderness, flavor, and succulence. The technology has been used to analyze beef and palm oil without dehydrating samples.
A new AI algorithm developed by MIT researchers uses radio signals to monitor sleep stages without sensors attached to the body. The device analyzes reflections of radio waves off the person's body, eliminating irrelevant information using deep neural networks.
A team of NASA scientists and engineers has developed a miniaturized version of a century-old technology to probe the ionosphere. The Concentration vs. Height for an Orbiting Electromagnetic Sounder (ECHOES) device uses digital signal processing to analyze radio wave signals and determine electron density in the ionosphere.
Scientists trap millions of rubidium atoms and apply a resonant radio frequency field to detect radio waves. They achieve high sensitivity by utilizing entanglement, reducing experimental noise and surpassing the standard quantum limit.
Fine Instrument Technology developed a low-field NMR device, SpecFIT, that performs chemical and physical analyses of fruit, grains, olive oil, milk, and meat. The device uses signal fade duration to measure sugar content, fat content, moisture, tenderness, flavor, and succulence.
A Japanese collaboration led by Osaka University has developed a method to detect unique signatures from single molecules using carbon nanotube-based devices. The researchers found that different molecules produced distinct noise signals related to their properties, allowing for the prediction of molecular interactions.
Researchers at the University of Washington have invented a battery-free cellphone that harnesses ambient power from radio signals and light to make calls. The device uses vibrations in the microphone or speaker to encode speech patterns in reflected radio signals, allowing for real-time communication without batteries.
The study found that VLF radio communications can interact with particles in space, creating a barrier around Earth. This 'barrier' corresponds to the inner edge of the Van Allen radiation belts and may help remove excess radiation from the near-Earth environment.
Researchers at Disney Research have demonstrated an ultra-wideband backscatter communication system that enables IoT sensors to transmit data via ambient radio waves. This approach radically reduces the power requirements of sensor nodes, allowing for widespread deployment in metropolitan areas.
Researchers develop subtransmitter concept to separate send and receive bands digitally, eliminating need for filters, and enabling simultaneous summation and cancellation of radio frequency signals across wide range of frequencies.
Researchers developed a technique to transmit audio and data via FM radio signals without affecting original transmissions. Objects like posters and clothing can now send information directly to smartphones or cars.
Researchers at Rice University have created a laser-free, wireless system capable of delivering 1 terabit of data per second using pulse-radio technology inspired by Guglielmo Marconi. This breakthrough technology promises to revolutionize wireless communication with speeds 20,000 times faster than current 4G networks.
A new MRI technique, Plug-and-Play MR Fingerprinting (PnP-MRF), has been developed to eliminate artifacts and create high-quality images. This innovation enables accurate diagnoses and reveals disease patterns that are consistent from patient to patient, promising superior imaging with less expensive machines.
Researchers have discovered liquid methane-filled canyons hundreds of meters deep with walls as steep as ski slopes etched into Titan's surface. The findings provide the first direct evidence of these features and could give scientists insights into Titan's origins and similar geologic processes on Earth.
Researchers developed an algorithm that can stitch together astronomical measurements from around the globe, producing the first images of black holes. The algorithm uses a technique called interferometry and preserves continuity in the image by using a mathematical model inspired by rubber sheets and plastic wrap.