Results 1 to 10 of about 297,599 (117)

Coarse Alignment Technology on Moving base for SINS Based on the Improved Quaternion Filter Algorithm [PDF]

open access: yesSensors, 2017
Initial alignment of the strapdown inertial navigation system (SINS) is intended to determine the initial attitude matrix in a short time with certain accuracy.
Tao Zhang   +4 more
doaj   +4 more sources

MIMU/BDS Integrated Navigation Technology Based on Smooth Variable Structure-Adaptive Kalman Filter [PDF]

open access: yesHangkong bingqi, 2021
In order to improve the accuracy of MIMU/BDS integrated navigation with uncertain models and large disturbances, a smoothing variable structure-Kalman combined filter information fusion method is proposed.
Li Can, Shen Qiang, Qin Weiwei, Duan Zhiqiang, Wang Lixin
doaj   +1 more source

Kernel Adaptive Filtering Prediction Algorithm of Chaotic Time Series [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2023
In practical environment, chaotic time series often contain a lot of noise and outliers. Because of these interference factors, the prediction performance of the kernel adaptive filter based on the second-order similarity measure could decrease ...
LIU Qiang   +3 more
doaj   +1 more source

A Block-Scale FFT Filter Based on Spatial Autocorrelation Features of Speckle Noise in SAR Image

open access: yesRemote Sensing, 2022
In order to reduce the impact of noise on the accuracy of inversion products based on SAR images, many filtering algorithms have been developed for noise reduction of SAR images. This paper proposes a filtering method based on the spatial autocorrelation
Xigang Wang   +7 more
doaj   +1 more source

Handheld Device-Based Indoor Localization with Zero Infrastructure (HDIZI)

open access: yesSensors, 2022
The correlations between smartphone sensors, algorithms, and relevant techniques are major components facilitating indoor localization and tracking in the absence of communication and localization standards.
Abdullah M. AlSahly   +4 more
doaj   +1 more source

Data pre-processing to increase the quality of optical text recognition systems

open access: yesРадіоелектронні і комп'ютерні системи, 2021
The subject of study in the article is the formulation of a modern concept of improving the quality of work of optical recognition systems by using a set of various algorithms for preprocessing document images at the user's discretion.
Konstantin Dergachov   +3 more
doaj   +1 more source

A Preliminary Neutron Imaging Study of Moisture Transport in Cement-Based Materials on PKUNIFTY (A Compact Accelerator Based Neutron Imaging Facility at Peking University)

open access: yesApplied Sciences, 2022
Understanding moisture transport is an important step in the study of the durability of cement-based materials. A neutron imaging detection method for water transport in cement-based materials, based on a compact neutron source is provided.
Dongyang Wang   +8 more
doaj   +1 more source

Intercomparison of Resampling Algorithms for Advanced Technology Microwave Sounder (ATMS)

open access: yesRemote Sensing, 2022
The observations from satellite microwave-sounding instruments have been widely used in weather and climate studies. Since the data resolution varies with frequency and satellite viewing angle, it is normally required that the measurements at each ...
Yuchen Xie, Fuzhong Weng
doaj   +1 more source

Comparison of the Remapping Algorithms for the Advanced Technology Microwave Sounder (ATMS)

open access: yesRemote Sensing, 2020
One of the limitations in using spaceborne, microwave radiometer data for atmospheric remote sensing is the nonuniform spatial resolution. Remapping algorithms can be applied to the data to ameliorate this limitation.
Jun Zhou, Hu Yang
doaj   +1 more source

Improved anti-occlusion object tracking algorithm using Unscented Rauch-Tung-Striebel smoother and kernel correlation filter

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Aiming at the existing problems that object tracking algorithm fails to track under the influence of occlusion conditions, the paper has improved the Kernel Correlation Filter algorithm.
Runlong Xia, Yuantao Chen, Binbin Ren
doaj   +1 more source

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