Results 1 to 10 of about 1,220,933 (279)

A Novel MEMS Gyroscope In-Self Calibration Approach [PDF]

open access: yesSensors, 2020
This paper presents a novel approach for hand-held low-cost MEMS (micro-electro-mechanical system) gyroscope in-self calibration. This method does not need the support of external high-precision equipment compared with traditional calibration scheme and ...
Qifan Zhou   +3 more
doaj   +2 more sources

Estimation of Coefficient of Variation Using Calibrated Estimators in Double Stratified Random Sampling

open access: yesMathematics, 2023
One of the most useful indicators of relative dispersion is the coefficient of variation. The characteristics of the coefficient of variation have contributed to its widespread use in most scientific and academic disciplines, with real life applications.
Usman Shahzad   +5 more
doaj   +1 more source

A Designed Calibration Approach for the Measurement-While-Drilling Instrument

open access: yesApplied Sciences, 2022
The Measurement-While-Drilling (MWD) system, composed of a tri-axial magnetometer and a tri-axial accelerometer, is widely used in the Horizontal Directional Drilling machine in coal mines.
Zongwei Liu   +4 more
doaj   +1 more source

Multichannel radiometer calibration: a new approach [PDF]

open access: yesApplied Optics, 2005
The error in irradiance measured with Sun-calibrated multichannel radiometers may be large when the solar zenith angle (SZA) increases. This could be particularly detrimental in radiometers installed at mid and high latitudes, where SZAs at noon are larger than 50 degrees during part of the year.
Diaz, Susana Beatriz   +14 more
openaire   +3 more sources

Hierarchical approach to hydrological model calibration [PDF]

open access: yesEnvironmental Earth Sciences, 2017
Hydrological models have been widely used for water resources management. Successful application of hydrological models depends on careful calibration and uncertainty analysis. Spatial unit of water balance calculations may differ widely in different models from grids to hydrological response units (HRU).
Ozdemir, Ayfer   +2 more
openaire   +3 more sources

Camera calibration with spheres: linear approaches [PDF]

open access: yesIEEE International Conference on Image Processing 2005, 2005
This paper addresses the problem of camera calibration from spheres. By studying the relationship between the dual images of spheres and that of the absolute conic, a linear solution has been derived from a recently proposed non-linear semi-definite approach. However, experiments show that this approach is quite sensitive to noise. In order to overcome
Zhang, G, Zhang, H, Wong, KYK
openaire   +2 more sources

Roll Calibration for CryoSat-2: A Comprehensive Approach

open access: yesRemote Sensing, 2021
CryoSat-2 is the first satellite mission carrying a high pulse repetition frequency radar altimeter with interferometric capability on board. Across track interferometry allows the angle to the point of closest approach to be determined by combining ...
Albert Garcia-Mondéjar   +4 more
doaj   +1 more source

Online Monitoring of the Growth of Probiotic Bacteria and Metabolites in the Fermentation of a Teff Substrate Using Model-Based Calibration of 2D Fluorescence Spectra

open access: yesMicroorganisms, 2023
The demand for probiotic bacteria-fermented food products is increasing; however, the monitoring of the fermentation process is still challenging when using conventional approaches.
Sendeku Takele Alemneh   +4 more
doaj   +1 more source

Extrinsic calibration of stereo camera and three-dimensional laser scanner [PDF]

open access: yesКомпьютерная оптика, 2019
The paper describes an approach that allows solving the problem of extrinsic calibration of a multi-beam lidar and a stereo camera. The approach does not impose any restrictions on the place in which calibration should be performed.
Alexander Abramenko
doaj   +1 more source

Fast and deterministic optical phased array calibration via pointwise optimisation

open access: yesLight: Advanced Manufacturing, 2023
Owing to the structural errors in the optical phased array, an initial random phase reduces the quality of the deflection beam. The most commonly applied approach to phase calibration is based on adaptive optics. However, adaptive optimisation approaches
Jingwen Shan   +4 more
doaj   +1 more source

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