Articles tagged with Radio Signals
Researchers at North Carolina State University have developed a new technique to create passive RFID tags that are 25% smaller and less expensive. By eliminating the need for power conversion, the tags can operate directly from AC power, reducing size and cost.
Scientists at Disney Research have developed a method to differentiate between even seemingly identical electronic devices using their unique radio frequency emissions. The EM-ID system achieved 95% accuracy in identifying individual devices, with limitations including the need for powered-on devices and potential signal overlap.
Recent measurements from the LOFAR radio telescope have provided new insights into the properties of cosmic rays, including a surprisingly high number of light particles at high energies. The KIT simulation code CoREAS has enabled precise analysis and interpretation of these signals.
A team of scientists identified a fast radio burst and pinpointed its location, confirming the current cosmological model of the universe's distribution of matter. The discovery measured the density of material between the FRB source and Earth, allowing for a more accurate understanding of the universe's composition.
A team of astronomers discovered the most detailed record ever of a Fast Radio Burst (FRB), indicating that it originated in a highly magnetized region of space. The research suggests a link to recent supernovae or active star-forming nebulae, significantly narrowing down the source's environment and type of event.
Researchers have discovered a detailed record of an FRB, providing new insights into its origin and environment. The signal exhibited Faraday rotation and passed through two distinct regions of ionized gas, shedding light on the mysterious astrophysical phenomenon.
Researchers identified a highly magnetized, gas-filled region of space as the source of a Fast Radio Burst (FRB), significantly narrowing down its environment and type of event. The discovery provides crucial constraints on understanding these mysterious events.
Researchers at Northwestern University have developed Wi-FM, a technique that uses ambient FM radio signals to mitigate interference between competing wireless networks. By analyzing usage patterns and adapting to changes, Wi-FM enables devices to harmonize their signals and reduce slow speeds, resulting in improved network performance.
Researchers verify secure Wireless Key Distribution in a real outdoor environment using concurrent service data transmission. The method achieves satisfactory statistical properties and satisfies criteria of randomness with a key generation rate of approximately 0.1 bits per second.
The Breakthrough Prize Foundation has committed $100 million to UC Berkeley and other institutions to lead a comprehensive scientific search for extraterrestrial intelligence. The initiative, called Breakthrough Listen, will utilize radio and optical telescopes to gather and analyze data from the universe.
Researchers at Disney have developed a system that uses battery-free RFID tags to detect how people interact with everyday objects. The IDSense system can track multiple objects simultaneously and infer movement patterns with high accuracy, opening up new possibilities for interactive play, smart homes, and consumer behavior analysis.
University of Washington engineers have designed a new communication system that uses radio frequency signals as a power source and reuses existing Wi-Fi infrastructure to provide Internet connectivity. This technology, called Wi-Fi backscatter, enables battery-free devices to connect to the internet, overcoming a major hurdle in the w...
Researchers identified 17 auditory tasks, such as grid references and enemy movement detection, to assess hearing fitness. The study aims to develop a new auditory fitness test and provide insights into the challenges faced by frontline soldiers.
Astronomers have discovered three closely orbiting supermassive black holes in a galaxy over four billion light years away. The system's tight configuration suggests that these closely-packed black holes are far more common than previously thought.
The new meter is 100 times more precise than the best available near-infrared spectrometers and 10 times more accurate than a similar NASA meter. It enables researchers to track down carbon dioxide, methane, and other gases with simultaneous determination of their concentrations at different altitudes.
Scientists at Chalmers University of Technology have developed a new tide gauge that measures sea level using GPS signals. This innovation allows for the monitoring of sea level changes with high precision, enabling researchers to study the effects of climate change on coastal societies.
A new approach converts weak microwave signals into visible light for clean detection and reduces noise by a thousand times. This all-optical detection method is the first to achieve this at room temperature.
Researchers at the Niels Bohr Institute developed a new optomechanical method that achieves extreme precision in measuring radio waves by avoiding noise with laser light. The detector can operate at room temperature, reducing the need for expensive cooling measures.
Researchers at MIT develop WiTrack, a system that tracks movement through walls with high accuracy using low-power radio signals. The technology has potential applications in gaming, fall detection among the elderly, and other areas where accurate location tracking is required.
A team of Columbia researchers has developed a nano-mechanical system that can create FM signals, paving the way for more efficient cell phones and wireless communication. The device uses graphene's unique properties to tune frequency and overcome size limitations.
The sun emitted its fourth X-class flare since October 23, 2013, peaking at 5:54 p.m. on October 29, 2013. The X2.3 class flare may disrupt radio signals for hours due to its intense radiation.
Researchers achieve world-record rate of 100 gigabits per second via wireless data transmission. The method integrates photonic and electronic technologies to generate high-frequency radio signals, enabling efficient transmission over long distances without intermediate electronic circuits.
A University of British Columbia graduate student developed a solution to prevent cellular overload and dropped calls by using TV channels. She used smart antennas to transmit signals in a single direction, avoiding interference with radio and television signals.
A new model has been developed to improve the clarity of vehicle-to-vehicle transmissions needed for 'intelligent transportation'. The model accounts for motion-induced signal distortion, reducing errors in data transmission. This innovation has the potential to provide real-time warnings and improve road safety
Scientists have developed a new technique to calculate wind speeds of hurricanes using distorted GPS satellite signals, providing valuable information at little additional cost. The method offers a broader view of wind speeds than traditional dropsonde measurements, which are expensive and only available over large bodies of water.
Two sounding rockets will launch 15 seconds apart in support of the Daytime Dynamo experiment, studying a global electrical current called the dynamo. The mission aims to understand how winds and charged particles affect the currents.
The new radiometer will globally map soil moisture levels, a crucial gauge for drought monitoring and prediction. It will also help scientists understand the water cycle and crack an unsolved climate mystery: the location of carbon dioxide stores.
MIT researchers have developed a new method for manufacturing filters in frequency-hopping radios that enables 14 times more filters on a single chip. This improvement increases the performance of these devices while minimizing space constraints, making them ideal for handheld devices. The new approach uses techniques already common in...
Researchers at UC Berkeley developed a device using wireless signals to diagnose brain swelling or bleeding in real-time. The technology was tested in a pilot study and showed promising results, potentially becoming a cost-effective tool for medical diagnostics.
A mid-level solar flare with an M5.7-class rating was detected by NASA on May 3, 2013, affecting GPS and communication signals. The flare caused a temporary disruption to radio signals before subsiding.
Researchers have discovered two hot spots in the outer atmosphere of Betelgeuse, a cool red supergiant. The hot spots are separated by half the visual diameter of the star and have temperatures of around 4,000-5,000 Kelvin, much higher than expected.
The Fermi Gamma-ray Space Telescope has improved its ability to detect terrestrial gamma-ray flashes, which are brief outbursts of high-energy light produced above thunderstorms. The enhanced detection rate revealed that TGFs also generate a strong burst of radio waves, changing how scientists study this phenomenon.
Researchers at UC Riverside developed a new method to double wireless network efficiency, addressing the 'spectrum crunch' issue. This breakthrough has significant implications for the mobile internet and wireless industries, enabling faster data speeds and lower costs.
A mid-level solar flare, classified as M6, was observed by NASA's Solar Dynamics Observatory on November 13, 2012. The flare caused a moderate radio blackout affecting GPS and communications signals for several minutes to hours.
A team of astronomers has detected gravitational waves at optical wavelengths in light from a pair of eclipsing white dwarf stars. The effect, predicted by Einstein's theory of general relativity, causes the stars to inch closer together and orbit each other faster.
The device can be used to study stars, galaxies, and black holes, as well as explore the quantum world. It combines features of other amplifiers, operating over a wide frequency range with minimal noise.
A German research team has created a record-speed wireless data bridge that transmits digital information up to 20 billion bits per second, surpassing current state-of-the-art systems. The bridge operates at 200 GHz and remains operational under adverse atmospheric conditions.
Researchers at Saarland University developed a wireless bicycle brake that works with high reliability, enabling cyclists to react quickly in emergency situations. The system uses mathematical calculations and algorithms to ensure correct function and interaction of components.
Stanford engineers developed a tiny, self-propelled medical device that can travel through the bloodstream using wireless power. The device has an antenna small enough to fit in the bloodstream and can propel itself at speeds of over half-a-centimeter per second.
The Wireless Intelligent Sensor Platform for Emergency Responders (WISPER) combines three technologies to create a life-saving solution for firefighters. It features a microwave radio, navigation devices, and physiological health assessment system to track firefighters' locations and vital signs.
Researchers at MIT and UMass have developed a system to protect medical implants from attack by jamming unauthorized wireless signals. The system uses a small transmitter that can be worn like a necklace or watch, and allows authorized users to communicate with the implant while blocking malicious signals.
The Stevens Institute of Technology engineering team created a smart wallet prototype that protects credit card user privacy using software-defined radio technology. The system defaults to defensive mode but allows communication with near-field readers with the push of a button.
Astronomers at UC Berkeley are using the Green Bank radio telescope to search for signals from advanced civilizations on 86 Earth-like planets identified by Kepler. The team aims to detect signals that could be indicative of life, scanning a range of frequencies including the water hole, a canonical place to look for intentional signals.
German and US researchers have successfully calculated the Hoyle state, an energy-rich form of the carbon nucleus. This achievement is crucial for understanding how life began and may even allow answering philosophical questions using science.
Researchers at TE SubCom have demonstrated a way to boost undersea cable capacity without increasing optical bandwidth. The breakthrough allows for high spectral efficiency channels to be transmitted over longer distances, up to 18,000 kilometers, surpassing previous records.
Researchers detect signal from the Epoch of Reionization, a period 13 billion years ago when the universe was dark and hydrogen gas dominated. The discovery provides insights into how the first galaxies formed and evolved, shedding light on the early universe's history.
The Virtual Mission Operations Center (VMOC) enables approved users to request satellite services instantly, prioritized based on operational intent. The system reduces the need for a 'man in the loop', improving satellite utilization and command speed.
A Tel Aviv University security expert has identified serious security drawbacks in US passports, credit cards, and e-voting systems. The researcher, Prof. Avishai Wool, found that hackers can access the chip embedded in passports using simple devices, while smart card vulnerabilities allow for easy jamming of radio frequencies.
The conference will showcase cutting-edge research in optical communication, including an express lane for large data transfers and innovations in wireless connectivity. Scientists will also explore new technologies for more efficient data routing and faster internet speeds.
Researchers at NIST have developed a new method for simulating wireless signal environments, reducing the time required for testing cellular phones by hours. The new technique uses a reverberation chamber to replicate complex real-world environments, enabling faster and more accurate design and test of wireless equipment.
Researchers at Purdue University have developed a miniature device capable of converting ultrafast laser pulses into bursts of radio-frequency signals. This technology has the potential to enable all communications to be transmitted from a single base station, making wires obsolete. The approach uses microring resonators to filter out ...
The first antenna of the Australia Square Kilometre Array Pathfinder (ASKAP) telescope has received its first radio signals, paving the way for further development. The successful test demonstrates the feasibility of ASKAP's innovative design and sets a promising stage for the future telescope's scientific discoveries.
Scientists are expanding their search for extraterrestrial life by moving beyond traditional radio signals. Paul Davies suggests using various scientific methods to scrutinise the solar system and galaxy for signs of past or present cosmic company.
A wireless network of radio transmitters can track people moving behind solid walls, according to a new study. The system uses radio tomographic imaging (RTI) and has the potential to help law enforcement, rescue operations, and retail marketing.
The US Department of Homeland Security is developing a new technology using ground-penetrating radar to detect tunnels along the US border. This innovative system will help agents locate and plug tunnels almost as fast as criminals can dig them, reducing the threat of drug smuggling, human trafficking, and terrorist attacks.
Researchers created a fast, low-power radio chip inspired by the human inner ear's cochlea, enabling wireless devices to receive cell phone, Internet, radio, and TV signals. The chip is faster than any human-designed spectrum analyzer and operates at much lower power.
The Compact Array Broadband Backend (CABB) project has upgraded CSIRO's radio telescope near Narrabri in NSW, increasing its bandwidth from 128 MHz to 2 GHz. This upgrade enables astronomers to capture more data from the sky faster and detect cosmic objects more quickly.
Researchers at NIST developed a practical solution to enhance radio signal power at disaster sites using randomly placed antennas. The study found a significant increase in median received power, with a five-fold gain and a two-and-a-half to four-fold increase when using multiple transmitters.
A team of scientists discovered a mysterious screen of extra-loud radio noise permeating the cosmos, preventing astronomers from observing heat from the first stars. The source of this cosmic background remains unknown.
The team found a cosmic puzzle that booms six times louder than predicted, ruling out origins from primordial stars and known radio sources. The source of this cosmic radio background remains a mystery, complicating efforts to detect the first stars in the universe.