Results 11 to 20 of about 125,078 (291)
A flexible device to produce a gas stream with a precisely controlled water vapour mixing ratio and isotope composition based on microdrop dispensing technology [PDF]
Atmospheric Measurement Techniques, 2023 Here we describe a versatile device to produce a gas stream with a precisely controlled water vapour mixing ratio and stable water isotope composition based on microdrop dispensing technology. To produce a moist airstream, the microdrop dispensing
H. Sodemann +11 more
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Random error identification for MEMS gyro in coal mine underground
Gong-kuang zidonghua, 2019 Aiming at problems of unrevealing potential error source, hardly separating specific random error and long data collection time of common random error identification methods, Allan variance analysis method was used to identify random error of MEMS gyro ...
CONG Lin, WANG Xiaolong, YAN Bi
doaj +1 more source
Characterization and Benchmark of a Novel Capacitive and Fluidic Inclination Sensor
Sensors, 2021 In this paper, a fluidic capacitive inclination sensor is presented and compared to three types of silicon-based microelectromechanical system (MEMS) accelerometers. MEMS accelerometers are commonly used for tilt measurement.
Adrian Schwenck +2 more
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Extending Non-Ambiguity Range of Dual-Comb Ranging for a Mobile Target Based on FPGA
Sensors, 2022 Dual-comb ranging (DCR) is an important method in absolute distance ranging because of its high precision, fast acquisition rate, and large measuring range. DCR needs to obtain precise results during distance measurements for a mobile target.
Ruoyu Liu +7 more
doaj +1 more source
Evaluation of the ultimate performances of a Ca+ single-ion frequency standard [PDF]
, 2003 We numerically evaluate the expected performances of an optical frequency standard at 729 nm based on a single calcium ion. The frequency stability is studied through the Allan deviation and its dependence on the excitation method (single Rabi pulse or ...
Arbes +37 more
core +4 more sources
Earth, Planets and Space, 2020 Allan variances and its related methods are commonly used to analyse a sequence of data in the time domain to measure frequency stability of oscillators. It allows for a determination of noise type as a function of the averaging time.
Kamil Maciuk +3 more
doaj +1 more source
About the stochastic features during intracranial pressure transients – the Allan deviation
, 2021 Objective: The Allan deviation (AD) has not been generally used as a tool to determine the statistical properties of intracranial pressure (ICP) up to now. This fact is remarkable because concordance to modern analytic methods applied to ICP (i.e., the wavelet variance) exists. AD becomes important [for full text, please go to the a.m. URL]
Heissler, HE +3 more
openaire +2 more sources
Sensors, 2016 Micro and nano electromechanical resonators have been widely used as single or multiple-mass detection sensors. Smaller devices with higher resonance frequencies and lower masses offer higher mass responsivities but suffer from lower frequency stability.
Francesc Torres +4 more
doaj +1 more source
Results in Physics, 2023 Atom interferometry-based sensors have demonstrated remarkable precision, making them attractive for diverse applications compared to traditional sensors. However, practical experiments inevitably encounter noise, which limits precision.
Huai-Yu Zhu +3 more
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A New Bound on Excess Frequency Noise in Second Harmonic Generation in PPKTP at the 10^-19 Level [PDF]
, 2012 We report a bound on the relative frequency fluctuations in nonlinear second harmonic generation. A 1064nm Nd:YAG laser is used to read out the phase of a Mach-Zehnder interferometer while PPKTP, a nonlinear crystal, is placed in each arm to generate ...
Armstrong +17 more
core +2 more sources