Articles tagged with Radar
Scientists are working to provide geodiversity data to researchers, helping close the gap in understanding ecosystems. By analyzing satellite data, they can capture more than just the mean environment, revealing microclimates that support specific species.
The Center for Large Aperture Secure Sensing, Imaging and Communications aims to develop advanced antenna technologies for future wireless systems. Led by Edward Knightly, the research team will investigate how extremely large-scale antenna arrays can expand wireless system capabilities in challenging environments.
A team of international researchers has successfully demonstrated a breakthrough in detecting satellites and space debris in orbit using repurposed radio telescopes. This technology can increase sensitivity by more than tenfold, enabling the detection of smaller objects at greater distances.
Researchers used LuTan-1 to test hybrid-polarimetric radar's effectiveness for various land covers, finding it performs well for many natural and agricultural surfaces but struggles with sloped or directionally organized targets. The study provides practical guidance for future Earth-observation missions.
New studies reveal potential for 30-day forecast accuracy boosts using machine learning and explore the impact of vegetation on ocean currents during the Little Ice Age. Researchers also find that La Niña events can slow global warming by amplifying each other's cooling effects.
Researchers at the University of Arizona used drones equipped with ground-penetrating radar to map the thickness of rocky debris covering glaciers on Earth. The technology could help future astronauts locate accessible water locked in buried ice on Mars.
Researchers propose a foundational framework to help multi-agent, connected systems decide what information they can trust before acting. The 'cy-trust' concept assigns a numerical trust value between 0 and 1 to data from other agents based on sensing, context, network behavior, and past experience.
A new SAR interpretation method links bright scattering patterns to specific 3D structures, improving target analysis and physically grounded SAR simulation. The approach outperformed existing methods in image quality evaluation, processing time, and physical interpretability.
Research reveals that Alaska glaciers are losing mass due to rising temperatures, with a single degree Celsius increase in summer temperature causing an additional three weeks of melting. Synthetic aperture radar technology provides consistent and automatic monitoring year-round, allowing scientists to track glacier changes.
Engineers at Purdue University have developed a patent-pending method to estimate the location, orientation, and radius of underground utility pipes using ground-penetrating radar. This innovation could help prevent hazardous strikes during construction projects, reducing financial losses and service disruptions.
Roadside radar sensors like EyeDAR enhance automotive radar systems by capturing reflections from obstacles, reducing blind spots and improving sensing accuracy. This technology has potential applications in robots, drones, and wearable platforms, complementing artificial intelligence with analog design.
Researchers at the University of Pennsylvania have developed HoloRadar, a system that enables robots to reconstruct hidden 3D spaces beyond their line of sight using radio waves processed by AI. This capability can improve safety and performance in driverless cars and cluttered indoor settings.
A team from the University of Trento has identified an empty subsurface lava tube beneath Venus' surface, estimated to be approximately one kilometer in diameter and 375 meters deep. The discovery was made possible by analyzing Magellan's radar images and provides new insights into Venus' volcanic processes and geology.
Researchers estimate 100 trillion insects fly in US skies daily, with stability over past decade but regional fluctuations. Winter temperatures significantly impact insect populations, which may hide species sensitive to environmental change.
Researchers estimated that around 100 trillion insects fly above the US every day using weather radar data. Insect populations remained relatively stable over the past decade, but regional fluctuations were observed, with warmer temperatures leading to declines in insect density.
A new study uses radar technology to reveal crumbling dams across the US, threatening socially vulnerable communities. The research aims to create a country-wide database of unsafe dams, their flood risks, and impacted communities.
The 106th Annual Meeting of the American Meteorological Society will focus on the intersection of technology and human decision-making in weather, water, and climate sciences. The meeting will feature keynote presentations, Presidential Sessions, and named symposia highlighting key Earth science topics.
The University of Oklahoma will receive a $19.9 million award to develop the KaRVIR system, a groundbreaking dual-Doppler 3D mobile Ka-band imaging radar that will enhance atmospheric science research and provide critical insights into weather systems and wildfires.
A new algorithm, Geo-SETRA, reconstructs 3D models with denser and more accurate point clouds than traditional SAR techniques. It preserves fine architectural details while minimizing post-processing.
Research suggests that airport radar systems and military operations can inadvertently reveal our existence to potential advanced alien civilizations due to hidden electromagnetic leakage. Worldwide aviation hubs like Heathrow and Gatwick emit signals strong enough to be detected by telescopes up to 200 light-years away.
A new imaging technique developed by MIT researchers leverages reflections from wireless signals like Wi-Fi to create accurate 3D reconstructions of objects blocked from view. This approach achieved 96 percent reconstruction accuracy on everyday objects with complex shapes.
A dynamic spectrum and power allocation method, developed using a genetic algorithm, enables efficient sharing of frequencies between airborne pulse radar and communication systems. The method achieves up to a 22% improvement in radar detection probability while increasing the communication system's throughput.
The new system uses radar and reflective surfaces to monitor driver movements and determine their state of alertness. It has the advantage of being simple and cost-effective compared to conventional camera-based systems.
A new satellite developed by Chalmers University of Technology will help monitor and measure the world's forest biomass. The system enables precise measurements of forest carbon stocks, aiding efforts to combat climate change.
The proposed elimination of NOAA Research would drastically undercut the scientific backbone needed for accurate weather forecasts and services. Key stakeholders like the American Meteorological Society and National Weather Association urge action to maintain competitiveness in weather forecasting.
A new study by ProtectedSeas highlights the potential of marine radar technology to monitor vessel speed violations with 95% confidence. The research found that radar can detect speed violations with high accuracy, enabling effective enforcement of speed limits and prevention of strikes on whale populations.
A research team has identified a previously unknown defense mechanism in Pseudomonas syringae, enabling the bacterium to produce chemical compounds that attract amoebae, which are then killed by toxic substances produced by the bacteria. This 'chemical radar' system also helps the bacteria infect plants in the presence of predators.
Researchers at Brigham Young University have developed an air traffic control system for drones that can effectively track low-flying aircraft in congested airspace. The system uses a network of small radars to provide real-time location data and enable safe collision prevention.
ApoB100 protein structure revealed for the first time, allowing for more precise testing and treatment of high cholesterol and heart disease. The discovery may lead to new drugs targeting LDL particles, reducing side effects of statin drugs.
The study uses GPR and laser scanners to create a digital map of the Castle's sub-surface, revealing underground cavities and passageways. The technology provides a historical record and allows for immersive experience projects combining history and innovation.
Changzhi Li received the prestigious prize to advance next-generation biomedical radar without wearable devices. His portable sensors enable non-contact health care, human-computer interaction and security surveillance.
Researchers at DGIST developed a novel algorithm that analyzes envelope features of radar signals to improve target differentiation. This breakthrough technology enables nearly double the resolution without increasing bandwidth or requiring new hardware, enhancing object recognition precision in automotive and aerospace applications.
Scientists have used data from CryoSat-2 and ICESat-2 to track changes in the Greenland Ice Sheet's thickness, revealing an average thinning of 1.2 meters between 2010 and 2023. The study confirms that combining satellite measurements can produce a more reliable estimate of ice loss.
A new technology developed by researchers from UPV, BUPT, CAS Institute, Air Force Early Warning Academy and University of Ottawa improves the accuracy of radars and LiDAR systems by up to 14 times, enabling faster and more accurate navigation in autonomous vehicles and detailed environmental studies.
A new eavesdropping technology has been developed to intercept underwater messages from the air, posing significant security risks. The device uses radar to decode tiny vibrations on the water's surface, allowing for location identification and message interception.
The partnership aims to improve the speed and accuracy of flood damage assessments by combining multi-modal data sources and a novel vision language model. The system will enable first responders to quickly allocate resources and respond more efficiently to weather disasters.
The Open Radar Code Architecture (ORCA) offers scientists a standardized way to build ice-penetrating radar systems, reducing costs and increasing efficiency. This enables glaciologists to collect and reuse data more effectively, advancing research into melting ice sheets and sea-level rise.
Researchers found that light pollution disturbs moth behavior outside the illuminated area, causing them to fly in curvy paths. The study also revealed an interaction between artificial light and the moon's phase, affecting moths' orientation and flight patterns.
Researchers developed a method to reconstruct long-term backscatter coefficient data using Sentinel-1 and Landsat images. The technique accurately mapped changing building heights in Beijing and its surroundings over three decades, providing valuable insights into urban expansion and environmental issues.
Researchers at Duke University have broken through the performance wall of adaptive radar systems using convolutional neural networks, paralleling computer vision. They've released a large open-source dataset for other AI researchers to build upon their work, aiming to tackle industry needs like object detection and tracking.
Researchers analyzed Cassini radar experiment data to estimate the composition and roughness of Titan's sea surfaces, revealing differences in hydrocarbon seas' surface layers dependent on latitude and location. The study found higher dielectric constants in southern Kraken Mare and detected tidal currents near coastal areas.
A team of researchers from Japan has successfully developed a noninvasive method to measure heart rates in chimpanzees using millimeter-wave radar technology. The technique involves emitting high-frequency electromagnetic pulses at the chest of the animal, capturing echoes, and analyzing subtle body movements to estimate heart rate. Th...
Researchers at TU Wien have developed a theory to extract information from waves, allowing for precise measurements of objects in space. The theory reveals that the information content of a wave depends on its interaction with the object's properties, enabling customised waves to be generated for optimal information transfer.
Researchers at Cornell University found that small variations in layers of water ice can cause constructive interference between radar waves, producing bright reflections. This explanation accounts for the observed signals without requiring liquid water, casting doubt on potential microbial life on Mars.
Researchers have developed a radar analysis method to detect open water zones and other changes in Alaska's frozen rivers, providing current hazard maps for improved winter river safety. The approach is automated, applicable across the Arctic and sub-Arctic, and can be customized for any northern latitude rivers.
Researchers from the University of Houston used spaceborne-monitoring to detect movements and deformations in the Kakhovka Dam years before its collapse. The study highlights the importance of proactive monitoring and remote sensing in ensuring infrastructure safety and integrity.
Researchers develop AI-based system to track small metallic objects in Low Earth Orbit, outperforming classical detection methods. The system's high detection rate and low false alarm rates make it suitable for proactive decision-making and intervention strategies.
Researchers at Duke University create a system called MadRadar that can trick automotive radar sensors into believing anything is possible without prior knowledge. The technology can hide existing cars, create phantom vehicles, or make it seem like an actual car has changed course.
Researchers confirm ancient lake sediments at Jezero crater on Mars using radar imaging, revealing eons of environmental changes and potential signs of past life. The discovery supports the search for evidence of life in Perseverance rover's soil and rock samples.
The FengYun 3G (FY-3G) satellite is a groundbreaking tool for measuring global precipitation, offering high-resolution 3D renditions of falling precipitation. The satellite's data will aid in predicting extreme weather events and inform the development of future precipitation satellites.
Researchers at Ohio State University are testing the use of Synthetic Aperture Radar to help with wildfire detection and improve first responders' ability to predict and respond to deadly forest fires. The new tool has potential for tracking wildfires from start to finish, monitoring soil moisture, and discerning flame-prone areas.
Researchers have identified over 2.4 million hectares of land as critical stopover hotspots for migratory songbirds in the eastern United States, primarily consisting of deciduous forests. Protecting these sites is essential to safeguarding bird populations, which have plummeted by a quarter since 1970 due to habitat loss and climate c...
Research reveals that an average of 1,000 times more birds are in the air close to fireworks on New Year's Eve, with effects strongest within the first 5 km. Larger birds like geese and ducks fly for hours at remarkable altitudes, risking accidents.
A study found that artificial light is a top indicator of where birds will land, leading to ecological traps and collisions. Urban parks can provide decent stopover sites, but competition over limited resources poses a significant risk to migrating birds.
Researchers have developed an integrated THz vortex beam emitter to detect rotating targets with remarkable precision. The system uses spiraling electromagnetic waves with orbital angular momentum to accurately measure the speed of a rotating object, with a maximum margin of error of just around 2 percent.
Researchers from Simon Fraser University and Brigham Young University have developed a new radar technology that significantly improves the detection of polar bear dens in the Arctic. The technology, using Synthetic Aperture Radar (SAR), has been shown to increase den detection by over 66% compared to current industry standards.
The development of a new photonic technique enables the precise control of photonic angular momentum, allowing for the efficient recognition and real-time control of total angular momentum modes. The technique, which involves the symmetrical cascading of two units, has been experimentally demonstrated to recognize up to 42 individual T...
Researchers developed a proof-of-concept sensor that detects vibrations and changes in target position with high accuracy, using an innovative design to cancel out noise. The sensor's compact size, low cost, and long battery life make it suitable for various applications, including plant water status tracking and structural integrity d...
A new LSU-led project will install up to eight high-frequency radar systems along the Louisiana coastline, providing near-real-time monitoring of ocean surface currents. The system will contribute data to NOAA's Integrated Ocean Observing System, enhancing marine forecasts and safety in coastal waters.
Scientists have analyzed satellite data to better understand the pre-monsoon season's microphysical features, including larger rain droplets and more heavy ice precipitation on land. Their findings could improve weather prediction and mitigate damage from adverse climate events.