Results 21 to 30 of about 115,453,360 (292)

Review of interferometric synthetic aperture sonar interferometric phase filtering methods

open access: yesAdvances in Mechanical Engineering, 2023
Interferometric synthetic aperture sonar (InSAS) is a novel three dimensional underwater mapping system, which is widely used in various fields. Interferometric phase filtering is a crucial process in InSAS signal processing.
Pan Huang   +3 more
doaj   +1 more source

Research progress on key issues of UWB radar echo information processing for borehole rescue

open access: yesMeikuang Anquan, 2023
Borehole rescue technology has been widely used as a new rescue technique for the rapid construction of life way. UWB radar can be used to detect life information under non-visual conditions, but the UWB radar echoes are easily affected by the noise ...
Xuezhao ZHENG   +5 more
doaj   +1 more source

Modelling and studying the effect of graph errors in graph signal processing

open access: yes, 2021
Publisher Copyright: © 2021The first step for any graph signal processing (GSP) procedure is to learn the graph signal representation, i.e., to capture the dependence structure of the data into an adjacency matrix.
Miettinen, Jari   +2 more
core   +1 more source

A critical comparison on attitude estimation: From gaussian approximate filters to coordinate‐free dual optimal control

open access: yesIET Control Theory & Applications, 2021
This paper conveys attitude and rate estimation without rate sensors by performing a critical comparison, validated by extensive simulations. The two dominant approaches to facilitate attitude estimation are based on stochastic and set‐membership ...
N. P. Koumpis   +2 more
doaj   +1 more source

An efficient local stereo matching method based on an adaptive exponentially weighted moving average filter in SLIC space

open access: yesIET Image Processing, 2021
Rapidly obtaining accurate dense disparity maps has been the focus of stereo matching research. At present, approaches that achieve superior disparity maps require a large amount of computation, which is not suitable for practical applications.
Shan Yang   +3 more
doaj   +1 more source

Interest point detection from multi‐beam light detection and ranging point cloud using unsupervised convolutional neural network

open access: yesIET Image Processing, 2021
Interest point detection plays an important role in many computer vision applications. This work is motivated by the light detection and ranging odometry task in autonomous driving.
Deyu Yin   +8 more
doaj   +1 more source

Absolute localisation in confined spaces using deep geometric features

open access: yesElectronics Letters, 2021
When operating in dark and confined spaces, the capacity of the robots to localise in an absolute reference frame is of utmost importance. This letter presents an absolute localisation system, using deep 3D landmarks, for known confined spaces.
Rune Y. Brogaard   +2 more
doaj   +1 more source

A three-dimensional microseismic downhole noise suppression based on polarization filtering method in Shearlet transform

open access: yesFrontiers in Earth Science, 2023
Microseismic noise suppression is widely used in the exploration of unconventional oil and gas resources. The effective microseismic downhole signals have extremely weak energy and are contaminated by strong interference, making data processing and ...
Li Han, Dongyan Wang, Pengjun Yu
doaj   +1 more source

Recursive fusion estimation for mobile robot localization under multiple energy harvesting sensors

open access: yesIET Control Theory & Applications, 2022
This paper is concerned with the recursive fusion estimation‐based mobile robot localization (RL) problem by employing multiple energy harvesting sensors (EHSs).
Yanyang Lu, Hamid Reza Karimi
doaj   +1 more source

On reconstruction methods for processing finite-length signals with paraunitary filter banks [PDF]

open access: yesIEEE Transactions on Signal Processing, 1995
New expressions are developed for the perfect reconstruction of the boundary regions of a finite-length signal after subband processing. The time-invariant filter bank is required to be uniform and paraunitary, using FIR filters regardless of phase or symmetry.
Ricardo L. de Queiroz, K. R. Rao 0001
openaire   +2 more sources

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