Results 11 to 20 of about 13,324 (245)
Earth and Space ScienceThe dominant external forcing to Earth's climate system is solar radiation, referred to as the solar spectral irradiance (SSI) and the total solar irradiance (TSI), which is the integral of SSI over all wavelengths.
Odele Coddington +2 more
exaly +3 more sources
Allan deviation tells the binding properties in single-molecule sensing with whispering-gallery-mode optical microcavities [PDF]
Physical Review Research, 2021 We propose a scheme of exploring the kinetic properties of the receptor-ligand binding process by means of the frequency stability measurement of a whispering-gallery-mode optical microcavity.
Deshui Yu, Frank Vollmer
doaj +3 more sources
Frequency Locking Method for Frequency Standards Based on Diamond NV Centers [PDF]
SensorsIn this study, frequency locking technology is investigated for high-stability microwave frequency standards based on diamond nitrogen-vacancy (NV) centers.
Shiyu Guan +7 more
doaj +2 more sources
CIRP Annals - Manufacturing Technology, 2023 Measurement and instrument noise as proposed in ISO 25178-600 and defined in ISO 25178-700 are assumed to be both stationary and randomly distributed. This paper presents the temporal and lateral Allan deviation as useful tools for deeper noise analysis in surface topography measurements. The temporal Allan deviation may be used to identify and qualify
Maxim Vanrusselt, Han Haitjema
exaly +3 more sources
Allan Deviation Plot as a Tool for Quartz-Enhanced Photoacoustic Sensors Noise Analysis
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016 We report here on the use of the Allan deviation plot to analyze the long-term stability of a quartz-enhanced photoacoustic (QEPAS) gas sensor. The Allan plot provides information about the optimum averaging time for the QEPAS signal and allows the prediction of its ultimate detection limit.
Marilena Giglio +2 more
exaly +4 more sources
SEMICONDUCTOR FREQUENCY STANDARD BASED ON P(16) SPECTRAL LINE OF ACETYLENE ISOTOPE WITH TEMPERATURE STABILIZATION BY PHASE MODULATION [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2018 This paper reviews the method of semiconductor laser diode frequency stabilization by phase modulation. Also parameters are identified that affect the quality of stabilization and the estimation of Allan deviation is obtained.
A. B. Danichev +2 more
doaj +1 more source
A Method for Autonomous Generation of High-Precision Time Scales for Navigation Constellations
Sensors, 2023 The time maintenance accuracy of the navigation constellation determines the user positioning and timing performance. Especially in autonomous operation scenarios, the performance of navigation constellation maintenance time directly affects the duration
Shitao Yang +7 more
doaj +1 more source
Evaluation of BDS-2 and BDS-3 Satellite Atomic Clock Products and Their Effects on Positioning
Remote Sensing, 2021 The BeiDou Navigation Satellite System (BDS) has completed third phase construction and currently provides global services, with a mixed constellation of BDS-2 and BDS-3. The newly launched BDS-3 satellites are equipped with rubidium and passive hydrogen
Shengfeng Gu +5 more
doaj +1 more source
Analytic Method for Estimating Aircraft Fix Displacement From Gyroscope’s Allan-Deviation Parameters [PDF]
IEEE Sensors Journal, 2022 The noise and drift requirements for a navigation-grade gyroscope are widely known, yet there is no simple analytic model of how the noise and drift of a gyroscope influence the fix displacement error (FDE) of an inertial navigation system (INS). This work derives simple analytical expressions for the cross-track and along-track errors of an aircraft ...
Jonathan M. Wheeler +3 more
openaire +2 more sources
The Effect of Spectral Resolution on the Quantification of OP-FTIR Spectroscopy
Photonics, 2023 Open-path Fourier Transform infrared spectroscopy (OP-FTIR) is widely used in polluted gas monitoring. The spectral resolution, as a key parameter of FTIR detection technology, affects the quantitative analysis of gas concentration.
Yusheng Qin +4 more
doaj +1 more source