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- 2018
- spectral irradiance
- correlated color temperature
- double monochromator
- color rendering index
- Uncertainty of measurement
- Measurement and Control Technology and Instruments
- Brno University of Technology
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Experiments to Extend the Retrace Specification of Fluke Zener Reference Standards
摘要： Fluke zener reference standards were designed to operate under constant power, whether it is from line power or from the batteries. Fluke has a published specification associated with the loss of power to the device under laboratory conditions for up to 24 hours (Retrace). Fluke has performed research and development on a new generation of Zener Reference standards, and as part of the research, experiments were conducted to quantify the uncertainty associated with removing power to the units for extended periods of time. The results of the experiment are presented, with interpretation of the data.
关键词： Hysteresis,Retrace,Zener reference standard,measurement uncertainty,uncertainty,Fluke 732,precision measurements
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Optical Simulation of the Influence of Spheres with Local Deviations on the Radius Value
摘要： The wavefront re?ected by a real sphere was supposed to in?uence signi?cantly the value of the volume determination. Therefore, optical simulations were performed to investigate the wavefront aberration and the results of simulated and inputted topographies are compared. To evaluate the valid boundary of the raytracing software a synthetic sphere with one local deviation from roundness was simulated. The software was validated with a precision of 0.01 nm for a standard sphere of 50 nm form deviation. In succession the contribution of the wavefront re?ection in the uncertainty budget could be reduced for various spheres.
关键词： optical simulation,measurement units,measurement uncertainty,uncertainty,interferometry
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Real-Time Confocal Fluorescence Lifetime Imaging Microscopy (FLIM) for Spectroscopic Sensing of Cancer Tissues
摘要： We demonstrated GPU accelerated real-time confocal fluorescence lifetime imaging microscopy (FLIM) based on the analog mean-delay (AMD) method. The frame rate of our system was demonstrated to be 13 fps for a 200 × 200 pixel image when observing maize vascular tissue. This system can be utilized for studying spectroscopic characteristics of cancer tissues.
关键词： measurement standards,measurement uncertainty,uncertainty,measurement techniques,Measurement,precision measurements
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Using of High Precision Multimeter Digitizer for High Transient Current Calibration
摘要： The calibration of transient current sensors is fundamental for the reliability of high current, short-circuit tests. The test can be performed with prospective or withstand current, but in both cases, the dynamic behavior of the current sensors has to be investigated, due to his influence on the scale factor value. The requirements of the IEC 62475 standard can be achieved with a calibration in transient conditions, performed with an approved reference measuring system. In this work a most performance measuring system is presented, for the improvement of INRIM high transient current measuring capability.
关键词： Short-circuit currents,measurement uncertainty,uncertainty,measurement techniques,current measurements,fault currents
更新于2025-09-10 09:29:36
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - A Sensor Invariant Atmospheric Correction Method for Satellite Images
摘要： Land surface re?ectance is the fundamental variable for the most of earth observation (EO) missions, and corrections of the atmospheric disturbs from the cloud, gaseous, aerosol help to get accurate spectral description of earth surface. Unlike the previous empirical ways of atmospheric correction, we propose a data fusion method for atmospheric correction of satellite images, with an initial attempt to include the uncertainty information from different data source. It takes advantage of the high temporal resolution of MODIS observations to get BRDF description of the earth surface as the prior information of the earth surface property, uses the ECMWF CAMS Near-real-time as the prior information of the atmospheric sates, to get optimal estimations of the atmospheric parameters. It guarantees the correction is consistent cross different satellites image tiles and even cross different sensors. The validations against the AERONET sites are also show high correlation at around 0.9, with a RMSE of about 0.02.
关键词： uncertainty,data fusion,Atmospheric correction
更新于2025-09-10 09:29:36
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - A Direct Method to Estimate Atmospheric Phase Delay for Insar with Global Atmospheric Models
摘要： Differential Interferometric Synthetic Aperture Radar (DIn-SAR), also known as Persistent Scatters Interferometry (PSI), has proved its unprecedented advantages of monitoring ground deformation on large scale with centimeter to millimeter precision in the last two decades. However, the reliability and accuracy are often contaminated with atmospheric artefacts caused by spatial and temporal variations of the atmosphere. Recent studies revealed atmospheric artefacts can be compensated with empirical models, GPS zenith path delay and numerical weather prediction models. In this paper, an improved methodology is proposed based on atmospheric reanalysis data to estimate atmospheric artefacts. With our approach, the realistic line of sight (LOS) path along satellite location and monitored points is considered, rather than the zenith path delay. The effectiveness of our method is validated over Tenerife island, Spain by using Sentinel 1 datasets.
关键词： InSAR,uncertainty,Meteorology data,APS,ECMWF,atmospheric artefacts,Sentinel 1
更新于2025-09-10 09:29:36
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Uncertainty Characterisation & Validation within ESA Fire-CCI
摘要： Uncertainty characterisation and validation are critical phases to generate any Essential Climate Variable (ECV), and therefore both have been included as key deliverables of the ESA CCI programme [1]. All products generated by the CCI are required to have an associated per pixel uncertainty characterisation. This paper describes both the uncertainty characterisation framework and the related uncertainty validation exercise of the Fire-CCI project.
关键词： Uncertainty,Burnt Area
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Harmonics Effects on Microwave Low-Power Measurement
摘要： The paper discusses the influence of higher harmonic components in the measured signal on the measurement uncertainty of RF level when diode power sensors are used. A method is proposed to evaluate the measurement uncertainty of different diode power sensors based on the signal harmonic content.
关键词： power sensor,microwave power,Harmonic effect,uncertainty,microwave measurements
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - N Anoscale Magnetometry Using Single Spin Quantum Sensors
摘要： Advancing the frontiers of nanoscience and information technology hinges on the availability of novel tools for nanoscale sensing and imaging. Solid-state electronic spins offer a unique platform to implement high-performance quantum sensing devices, which address this need and go beyond what classical technologies offer. We present a robust technology to realise this concept, which is based on nano-engineered diamond devices, hosting single electronic spins for sensing. We will describe the key principles underlying these novel quantum sensors and discuss some of their areas of applications which we have opened over the last years. These include the field of antiferromagnetic spintronics, where single spin magnetometry already yields unprecedented insight into domain formation and non-trivial spin-textures in antiferromagnets. Next to these room-temperature applications, we will present results of cryogenic single spin magnetometry for quantitative, high resolution imaging of vortices and supercurrents in nanoscale superconductors. These examples illustrate the remarkable performance that single spin quantum sensing offers, and which holds great promise for future applications in various applicatons of the nano-sciences.
关键词： scanning probe,spintronics,antiferromagnets,single spins,uncertainty,measurement techniques,Quantum sensing,precision measurements
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Reference Ultra Low DC Current Source (ULCS) Between 1 fA and 100pA at TüB?:TAK UME
摘要： We present a programmable ultra low DC current source (ULCS), developed at TüB?TAK UME, from 1 fA up to 100 pA with 100 aA resolution. The principle of the device is based on applying a ramp voltage on standard capacitors with values between 1 pF and 1000 pF. The standard capacitors are kept in a temperature controlled box. The device is fully automated with computer control and can be used to generate any currents with 100 aA resolution in its range.
关键词： ramp voltage,capacitance measurement,DC Low current,uncertainty,temperature control
更新于2025-09-10 09:29:36