Articles tagged with Calibration
A new solar X-ray detector on board the MSS-1B satellite achieves high accuracy in detecting spectral characteristics of X-ray solar flares. The instrument features a wide energy range, high count rate, and excellent spectral resolution.
The Euclid data release unlocks a treasure trove of information for scientists to study the universe's cosmic history and invisible forces. With its exceptional field of view, Euclid captures an area 240 times larger than the Hubble Telescope, delivering outstanding image quality in both visible and infrared light spectrum.
The University of Arkansas researcher Samir El-Ghazaly is designing a massive anechoic chamber to test antennas and certify RF interference produced by large electrical devices. The chamber, valued at nearly $1M, will be a testing site for Xtremis and potentially entice other startups to the area.
Researchers developed a highly sensitive hydrogen detection system using tunable diode laser absorption spectroscopy (TDLAS) with high selectivity and rapid response. The new method achieved accurate measurements of hydrogen concentrations from 0.01% to 100%, improving the detection limit at longer integration times.
A research project, ACCELERATE, aims to significantly reduce operational qualification time and cost in additive manufacturing by improving validation through detailed tasks and documentation. The project will tackle various aspects of AM operations, including facility controls, operator training, software configuration, and process mo...
Researchers developed a new spectroscopy method using tunable lasers, enabling precise tracking of the laser's color at every point in time. The technique offers higher power and spectral stability compared to existing methods, making it suitable for various applications including LIDAR and spectroscopy.
A revised radiocarbon calibration curve for the period between 433-250 BCE has been established, allowing for improved date estimates on Greek shipwrecks. The study confirms the Kyrenia Ship's final voyage around 280 BCE, slightly later than previous estimates.
A new approach uses neural networks to automatically determine polynomial coefficients for digital pre-distortion (DPD) in RF-PAs, reducing hardware complexity and power efficiency. This method can correct non-linearities and support emerging standards without extensive real-time processing.
A team of researchers from the University of Texas at Austin has developed a calibration-free brain-computer interface that allows users to control games and devices using only their thoughts. The device uses machine learning capabilities to self-calibrate, making it faster and more accessible for people with motor disabilities.
Researchers at NIST developed standards and calibrations for optical microscopes that enable accurate alignment of quantum dots to within 10-20 nanometers. This method could increase the number of high-performance devices by a hundred-fold, improving the reliability of quantum information technologies and biological imaging.
Scientists have developed an innovative calibration algorithm for Inertial Measurement Units (IMUs) using acoustic LBL-based calibration, significantly improving navigation performance. This breakthrough allows underwater vehicles to maintain accuracy even outside direct coverage of LBL networks.
Researchers developed a new spectropolarimetric imaging technique called DIP-SP, which integrates a passive polarization modulator into an imaging spectrometer. This approach enables high-dimensional information capture from incomplete measurements and significantly improves image quality.
Researchers develop a new technique to measure blood attenuation using a fluorophore-coated guidewire, improving the accuracy of near-infrared fluorescence in cardiovascular imaging. The method provides accurate information on vessel walls and outperforms existing correction methods.
Researchers created adaptive optical phantoms by combining multiple pigments to mimic target tissue's optical properties, successfully validating them in extensive experiments. The new platform enables broader band spectra for emerging hybrid modalities and novel instruments.
Researchers at Tokyo Metropolitan University have developed a new calibration algorithm for HumTouch technology, which converts AC hum noise into touch location data. The algorithm improves accuracy and speeds up calibration, enabling nearly any surface to be turned into a touch sensor with high precision.
The NYU WIRELESS research center will pioneer basic measurements of devices, circuits, materials, and radio propagation channels at the highest reaches of the radio spectrum. The team will study propagation and channel modeling, as well as RFIC on-chip measurement capabilities up to 500 GHz.
Astronomers propose a new method to measure the universe's expansion rate by analyzing the changes in signal properties of black hole collisions. By using the entire population of black holes as a calibration tool, scientists can directly identify and correct for errors, providing a more accurate measurement.
A new open-path mid-infrared spectrometer can precisely measure isotopologue ratios in atmospheric water vapor in under 15 minutes, offering improved accuracy for climate change modeling and air quality monitoring. The instrument's dual-comb technique enables spatially resolved studies of water vapor transport over natural ecosystems.
Researchers at NIST confirmed that transmission performance is consistent across different mmWave spectrum bands, refuting earlier disputes. Signal losses in secondary paths vary by frequency, with reflective paths losing minimal signal strength.
Researchers at NIST developed new standards and calibrations for optical microscopes, enabling accurate measurement of microdroplet volumes smaller than 100 trillionths of a liter. They combined microscopy with gravimetry to verify results, linking their findings to fundamental constants of nature.
Developers have created a mathematical model to calibrate rotary encoders, used in precise rotations like antennas and telescopes, with high accuracy. The approach uses a dynamic goniometer as a reference sensor to process data and provide a versatile calibration method for various encoder types.
Scientists from St. Petersburg Electrotechnical University LETI have developed a new method to calibrate strapdown inertial navigation systems, reducing the standard deviation by 15-fold. This breakthrough enables more accurate measurements required for reliable results in defense and space industries.
Researchers at NIST demonstrate a faster and more accurate way to calibrate microphones using lasers. The new technique surpasses the current industry standard, offering potential for commercial applications in industries like factories and power plants.
The National Institute of Information and Communications Technology has developed a highly-accurate and wide-measurable band terahertz frequency counter. The counter's measurement uncertainty is less than 1 x 10^-16, making it suitable for various applications including high-resolution spectroscopy of ultracold molecules.
Researchers developed a simplified method to calibrate optical tweezers for measuring viscoelasticity in living cells. The new method reduces measurement time to just a few seconds, allowing for the study of dynamic processes that can't be captured with longer measurements.
Researchers at Linköping University discovered that XPS can give misleading analysis results due to an erroneous assumption during calibration. This error has led to the publication of interpretations of data in conflict with basic physics, raising concerns about research credibility.
A new study by University of British Columbia researchers found that young children between 4-5 years old prefer learning from people who consistently match their accuracy and confidence. This ability helps them distinguish reliable information sources, making them less susceptible to misinformation.
Researchers at NIST have developed methods to measure the efficiency of five single-photon detectors, which are used in various applications such as optical communications and astrophysics. The study provides a tool for verifying future detection standards and aims to improve accuracy and reliability in these devices.
Researchers at NIST have designed new probes for sensing emission flow rates and developed a measurement method that could potentially improve the accuracy and speed of smokestack emissions audits. The fieldwork results were promising, showing reasonable agreement with laboratory findings.
A new standardized calibration method allows anyone to use a consumer camera for scientific purposes, including measuring pollution and water quality. The method, called SPECTACLE, was developed by researchers and enables users to upload calibration data from their cameras.
Virginia Tech researchers Margaret Couvillon and Roger Schürch have decoded the universal language of honey bees, allowing scientists to interpret the insects' sophisticated communications. By deciphering waggle dances, they hope to better understand pollinators' preferred forages and food sources.
A new measurement approach could create the first CT measurement standards connected to the International System of Units (SI), allowing for more precise calibration and comparison among scanners. This could lead to improved communication among doctors, more efficient diagnosis, and less costly treatment.
Scientists from Institute of Atmospheric Physics found a strong relationship between historical precipitation biases in South Asia and the western North Pacific and future Sahel precipitation projections. The study reveals a 109% increase in Sahel summer precipitation and a 119% increase in available water resources due to global warming.
Researchers developed a ball-shaped VR display that supports up to two users, creating a distortion-free 3D image from any angle. This allows for collaborative tasks and multiplayer games while maintaining social interaction.
UCSB researchers propose a new method for estimating the number of people in a room based on WiFi signal strength measurements. The technique, which uses received signal power to estimate occupant numbers, has shown high accuracy in experiments with up to 20 people and various wall properties.
Researchers have dated the ancient Minoan eruption of Thera to between 1600 and 1525 BC using tree ring analysis, which overlaps with previously estimated dates from archeological evidence. This discovery resolves long-standing debates about the timing of the eruption.
Researchers have developed a prototype for calibrating an entire solar field in a single night, shaving months off the current process. The innovation integrates digital cameras into heliostats to achieve pixel point accuracy, enabling precise calibration and reducing costs per square meter.
To correct for degradation, NASA launches calibration sounding rockets carrying a copy of the EVE instrument to approximately 180 miles above Earth. These measurements are compared to those from the degraded satellite, allowing Woods' team to correct for discrepancies and maintain accurate EUV light measurements.
Scientists at Tokyo Institute of Technology designed a tiny, fast, reliable, and accurate 28-GHz transceiver for stable high-speed 5G communications. The new transceiver employs a local oscillator (LO) phase shifting approach, achieving an improvement in beam steering resolution of an order of magnitude compared to previous designs.
Researchers have developed a detection system for volatile organic compounds (VOCs) emitted by modern museum artifacts, allowing for non-invasive monitoring of their preservation status. The system uses gas-chromatography/mass-spectrometry to identify characteristic VOC patterns, enabling the classification of degradation states.
Researchers developed a one-step process to enable peak BCI performance within three minutes, allowing users to control computer cursors just by imagining movement. The new approach streamlines calibration and reduces expert intervention, bringing the system closer to clinical availability.
RIT researchers Aaron Gerace and Matt Montanaro developed an innovative algorithm to improve the accuracy of Landsat 8 data by correcting stray light in the thermal infrared sensor. The new method, approved by NASA and USGS, provides clear improvement in image quality and accurate temperature measurements.
Researchers developed a single calibration that can be used with multiple NIRS instruments to accurately measure the percentage of alfalfa and grass in forage mixtures.
The LUX experiment has completed its search for dark matter, yielding no trace of a particle despite achieving record sensitivity. The results provide critical guidance for future dark matter experiments by eliminating potential models.
The Large Underground Xenon (LUX) experiment has completed its search for dark matter with sensitivity far exceeding expectations, but yielded no trace of a dark matter particle. This result eliminates many potential models for dark matter particles, offering critical guidance for the next generation of dark matter experiments.
The new atlas documents the world's level of artificial skyglow, affecting nocturnal organisms and ecosystems. The study found that Italy and South Korea have the most polluted skies, while Canada and Australia have the least, with residents in India and Germany being more likely to see the Milky Way.
The EVE sounding rocket will provide under-flight calibration for the SDO EVE spectrometers, supporting the calibration of other solar soft X-ray and extreme ultraviolet spectrometers. This mission aims to gather data for a tune-up of satellite instruments, helping scientists understand degradation trends.
A study validated kidney failure risk equations developed in a Canadian population across 30 countries, showing accurate predictions for patients with chronic kidney disease. The recalibrated equations improved calibration in non-North American cohorts, enabling clinicians to inform treatment decisions and patient communication.
Researchers at UCSB have improved LUX's sensitivity by 20 times using a neutron calibration technique. The new method helps rule out potential dark matter detections at low masses, excluding alternative particle models.
LUX scientists have improved the detector's sensitivity for low-mass dark matter particles, enhancing their ability to detect WIMPs. The new calibrations help rule out potential detections at low-mass ranges where other experiments had previously reported results.
Researchers detected radio absorption by gas clouds in front of bright radio sources, revealing the composition and conditions of diffuse gas in the Milky Way galaxy. The discovery of three new absorption systems and confirmation of one previously known system provides insight into tenuous gas clouds and their role in the universe.
Researchers have developed a new method to calibrate high-tech microscopes, enabling the tracking of single molecules in 3D at the nanoscale. This breakthrough has exciting implications for understanding key biological processes such as signaling, cell division, and neuron communication.
Researchers developed a new calibration technique for thermoluminescence dating, improving accuracy to within 1% using oxygen and lithium ions. The method employs a pulsed ion beam and a combination of detectors to replicate natural radiation exposure.
A new open-source resource helps scientists accurately date the tree of life by combining fossil data with DNA sequences, providing minimum ages for groups such as mollusks, penguins, and humans. This will aid in understanding the origin and evolution of biodiversity.
A new open-source database, Fossil Calibration Database, has been launched to help researchers accurately estimate the origins of all species. The database synthesizes data from the fossil record with molecular evidence, enabling 'molecular dating' studies.
A study by University of Oxford researchers exposes shortcomings in the 'index-calibration' method used in tiger and rare wildlife surveys. The team found that this approach can produce inaccurate results, especially with high uncertainty in detection rates. They suggest alternative methods to improve conservation efforts.
The new NIST probe uses quantum properties of atoms to measure electric field strength with improved sensitivity and precision. It can calibrate itself and has been demonstrated for imaging applications, with potential applications in electronics and medical devices.
Landsat 8 uses monthly lunar scans as a baseline calibration to ensure the accuracy of its land-cover information. The satellite's Operational Land Imager collects data on different wavelengths of light, and the moon's stable surface allows for precise tracking.
Researchers at Saarland University developed a new calibration technique called Ad-HOC that reduces the calibration error rate to below 0.1% and speeds up the process from six hours to five minutes.
A novel approach to managing model structural uncertainty is introduced, which can help prioritize improvements for better decision-making. The method analyzes internal discrepancies within the model and expresses beliefs about error sizes, providing an indication of relative importance.