Results 21 to 30 of about 491,522 (274)

A reliable and energy efficient dual prediction data reduction approach for WSNs based on Kalman filter

open access: yesIET Communications, 2021
Wireless sensor networks (WSNs) are critically resource‐constrained due to wireless sensor nodes' tiny memory, low processing units, power limitations, and narrow communication bandwidth.
Haibin Wang   +4 more
doaj   +1 more source

Range‐ambiguity suppression for noise radar in cluttered environment via sparse recovery

open access: yesElectronics Letters, 2021
Range ambiguity suppression is a significant problem in traditional pulse‐Doppler radar systems, especially when the pulse repetition frequency is set high to avoid Doppler ambiguity. One possible way to deal with such problem is to apply the noise radar
Xingyu Lu   +4 more
doaj   +1 more source

Perceptually Motivated Wavelet Packet Transform for Bioacoustic Signal Enhancement [PDF]

open access: yes, 2008
A significant and often unavoidable problem in bioacoustic signal processing is the presence of background noise due to an adverse recording environment. This paper proposes a new bioacoustic signal enhancement technique which can be used on a wide range
Cohen I.   +8 more
core   +2 more sources

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

Static/Dynamic Filtering for Mesh Geometry [PDF]

open access: yes, 2018
The joint bilateral filter, which enables feature-preserving signal smoothing according to the structural information from a guidance, has been applied for various tasks in geometry processing.
Deng, Bailin   +5 more
core   +3 more sources

Introduction to Random Signals and Noise [PDF]

open access: yes, 2006
Random signals and noise are present in many engineering systems and networks. Signal processing techniques allow engineers to distinguish between useful signals in audio, video or communication equipment, and interference, which disturbs the desired ...
Etten, Wim van
core   +8 more sources

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

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

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