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601 Results Found

  • Article
  • Open Access
2 Citations
2,784 Views
24 Pages

1 December 2020

Repetitive operation is extensively present in the inverter compressor refrigeration field. Research illustrates that an approximate periodic load disturbance deteriorates its self-sensing and efficiency in a low frequency range. According to an inte...

  • Article
  • Open Access
5 Citations
4,276 Views
17 Pages

22 September 2022

Trailing suction hopper dredgers (TSHD) are the most widely used type of dredgers in dredging engineering construction. Accurate and efficient productivity prediction of dredgers is of great significance for controlling dredging costs and optimizing...

  • Article
  • Open Access
21 Citations
3,093 Views
12 Pages

2 November 2022

Partial discharge (PD) online monitoring is a common technique for high-voltage equipment diagnosis. However, due to field interference, the monitored PD signal contains a lot of noise. Therefore, this paper proposes a novel method by integrating the...

  • Article
  • Open Access
45 Citations
5,516 Views
27 Pages

22 November 2021

Generating spatiotemporally continuous land surface temperature (LST) data is in great demand for hydrology, meteorology, ecology, environmental studies, etc. However, the thermal infrared (TIR)-based LST measurements are prone to cloud contamination...

  • Article
  • Open Access
354 Views
19 Pages

An Adaptive Hyperfine Spectrum Extraction Algorithm for Optical Sensing Based on SG Filtering and VMD

  • Yupeng Wu,
  • Kai Ma,
  • Ziyan Yun,
  • Yueheng Zhang,
  • Qiming Su,
  • Xinxin Kong,
  • Zhou Wu and
  • Wenxi Zhang

14 December 2025

In optical sensing, signal demodulation often degrades fine spectral data, particularly in spectroscopic measurements affected by Doppler noise, aliasing, and circuit noise. Existing algorithms often fall short in addressing these issues effectively,...

  • Article
  • Open Access
6 Citations
2,399 Views
9 Pages

24 December 2024

In order to enhance gas absorption efficiency and improve the detection sensitivity of methane, a gas absorption cell with an effective optical path length of 29.37 m was developed, employing tunable diode laser absorption spectroscopy (TDLAS) and a...

  • Article
  • Open Access
3 Citations
6,063 Views
17 Pages

Polynomial Cancellation Coded DFT-s-OFDM for Low-PAPR Uplink Signaling

  • Li Cho,
  • Yu-Ming Kuo,
  • Yi-Shin Wu and
  • Chau-Yun Hsu

14 November 2019

The physical layer signaling of the 5G new radio still utilizes cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread-OFDM (DFT-s-OFDM) to support 5G services for the sake of system-backward compatib...

  • Article
  • Open Access
119 Citations
11,948 Views
26 Pages

6 March 2014

More than 20 techniques have been developed to de-noise time-series vegetation index data from different satellite sensors to reconstruct long time-series data sets. Although many studies have compared Normalized Difference Vegetation Index (NDVI) no...

  • Article
  • Open Access
1,329 Views
23 Pages

Precision Identification of Irrigated Areas in Semi-Arid Regions Using Optical-Radar Time-Series Features and Ensemble Machine Learning

  • Weifeng Li,
  • Changlai Xiao,
  • Xiujuan Liang,
  • Weifei Yang,
  • Jiang Zhang,
  • Rongkun Dai,
  • Yuhan La,
  • Le Kang and
  • Deyu Zhao

14 August 2025

Addressing limitations in remote sensing irrigation monitoring (insufficient resolution, single-source constraints, poor terrain adaptability), this study developed a high-precision identification framework for Jianping County, China, a semi-arid reg...

  • Article
  • Open Access
35 Citations
3,560 Views
14 Pages

7 March 2022

In order to quickly, nondestructively, and effectively distinguish red jujube varieties, based on the combination of fuzzy theory and improved LDA (iLDA), fuzzy improved linear discriminant analysis (FiLDA) algorithm was proposed to classify near-inf...

  • Article
  • Open Access
1 Citations
12,133 Views
13 Pages

22 May 2021

An oscillatory S-curve causes unexpected fluctuations in a unit hydrograph (UH) of desired duration or an instantaneous UH (IUH) that may affect the constraints for hydrologic stability. On the other hand, the Savitzky–Golay smoothing and differentia...

  • Article
  • Open Access
18 Citations
5,947 Views
18 Pages

28 January 2019

Soil plays an important role in coastal wetland ecosystems. The estimation of soil organic matter (SOM), total nitrogen (TN), and total carbon (TC) was investigated at the topsoil (0–20 cm) in the coastal wetlands of Dafeng Elk National Nature...

  • Article
  • Open Access
1 Citations
3,691 Views
11 Pages

Improved RMS Delay Spread Estimation for mmWave Channels Using Savitzky–Golay Filters

  • Jiří Miloš,
  • Jiří Blumenstein,
  • Aleš Prokeš,
  • Tomáš Mikulášek and
  • Christoph Mecklenbräuker

12 December 2019

In this paper, a novel method for improving the estimation accuracy of the root mean square (RMS) delay spread from the magnitude of the Channel Transfer Function (CTF) is presented. We utilize the level crossing rate metric in the frequency domain,...

  • Article
  • Open Access
7 Citations
2,181 Views
20 Pages

17 May 2024

Land Surface Temperature (LST) products obtained by thermal infrared (TIR) remote sensing contain considerable blank areas due to the frequent occurrence of cloud coverage. The studies on the all-time reconstruction of the cloud-covered LST of geosta...

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,556 Views
17 Pages

10 February 2023

The synchronous generators (SGs) supplying non-linear loads have harmonically distorted terminal voltages. Hence, these distorted terminal voltages adversely affect the performance parameters of the supplied loads such as the power factor, current di...

  • Article
  • Open Access
5 Citations
1,742 Views
20 Pages

Monitoring Mangrove Phenology Based on Gap Filling and Spatiotemporal Fusion: An Optimized Mangrove Phenology Extraction Approach (OMPEA)

  • Yu Hong,
  • Runfa Zhou,
  • Jinfu Liu,
  • Xiang Que,
  • Bo Chen,
  • Ke Chen,
  • Zhongsheng He and
  • Guanmin Huang

6 February 2025

Monitoring mangrove phenology requires frequent, high-resolution remote sensing data, yet satellite imagery often suffers from coarse resolution and cloud interference. Traditional methods, such as denoising and spatiotemporal fusion, faced limitatio...

  • Article
  • Open Access
1,070 Views
17 Pages

An Experiment on Multi-Angle Sun Glitter Remote Sensing of Water Surface Using Multi-UAV

  • Chen Wang,
  • Huaguo Zhang,
  • Guanghong Liao,
  • Wenting Cao,
  • Juan Wang,
  • Dongling Li and
  • Xiulin Lou

28 May 2025

Unmanned aerial vehicle (UAV) remote sensing has become an important tool for modern remote sensing technology with its low cost and high flexibility. Sun glitter (SG) remote sensing based on satellite platforms shows great potential in the fields of...

  • Article
  • Open Access
30 Citations
6,621 Views
18 Pages

4 April 2019

Electrocardiogram (ECG) sensing is an important application for the diagnosis of cardiovascular diseases. Recently, driven by the emerging technology of wearable electronics, massive wearable ECG sensors are developed, which however brings additional...

  • Article
  • Open Access
5 Citations
2,981 Views
23 Pages

Non-Premixed Filtered Tabulated Chemistry for LES: Evaluation on Sandia Flames D and E

  • Pedro Javier Obando Vega,
  • Axel Coussement,
  • Amsini Sadiki and
  • Alessandro Parente

4 August 2022

The non-premixed filtered tabulated chemistry for large eddy simulations employs numerical filtering to resolve a thin flame front on practical LES numerical grids. The flame structure is modified to be coherent with the domain discretization. The fi...

  • Article
  • Open Access
10 Citations
3,582 Views
19 Pages

Optimal Temporal Filtering of the Cosmic-Ray Neutron Signal to Reduce Soil Moisture Uncertainty

  • Patrick Davies,
  • Roland Baatz,
  • Heye Reemt Bogena,
  • Emmanuel Quansah and
  • Leonard Kofitse Amekudzi

25 November 2022

Cosmic ray neutron sensors (CRNS) are increasingly used to determine field-scale soil moisture (SM). Uncertainty of the CRNS-derived soil moisture strongly depends on the CRNS count rate subject to Poisson distribution. State-of-the-art CRNS signal p...

  • Article
  • Open Access
51 Citations
4,380 Views
29 Pages

PLS-CNN-BiLSTM: An End-to-End Algorithm-Based Savitzky–Golay Smoothing and Evolution Strategy for Load Forecasting

  • Mohamed Massaoudi,
  • Shady S. Refaat,
  • Haitham Abu-Rub,
  • Ines Chihi and
  • Fakhreddine S. Oueslati

19 October 2020

This paper proposes an effective deep learning framework for Short-Term Load Forecasting (STLF) of multivariate time series. The proposed model consists of a hybrid Convolutional neural network-Bidirectional Long Short-Term Memory (CBiLSTM) based on...

  • Article
  • Open Access
6 Citations
2,180 Views
20 Pages

Gait Recognition Algorithm of Coal Mine Personnel Based on LoRa

  • Yuqing Yin,
  • Xuehan Zhang,
  • Rixia Lan,
  • Xiaoyu Sun,
  • Keli Wang and
  • Tianbing Ma

19 June 2023

This study proposes a new approach to gait recognition using LoRa signals, taking into account the challenging conditions found in underground coal mines, such as low illumination, high temperature and humidity, high dust concentrations, and limited...

  • Article
  • Open Access
4 Citations
1,875 Views
17 Pages

A novel inserting pilot scheme to generate and distribute a frequency 16-tupling millimeter wave (MMW) radio over fiber (ROF) system without the bit walk-off effect via Mach–Zehnder modulators (MZMs) is proposed. The operation principle is anal...

  • Article
  • Open Access
22 Citations
5,108 Views
16 Pages

16 August 2021

The multiple cropping index of farmland is a significant characterization of land use intensity. Based on the NDVI data, this paper calculated the multiple cropping index of farmland in China using the S-G filtering method, and proposed an optimized...

  • Article
  • Open Access
11 Citations
5,622 Views
21 Pages

Adaptive Savitzky–Golay Filters for Analysis of Copy Number Variation Peaks from Whole-Exome Sequencing Data

  • Peter Juma Ochieng,
  • Zoltán Maróti,
  • József Dombi,
  • Miklós Krész,
  • József Békési and
  • Tibor Kalmár

16 February 2023

Copy number variation (CNV) is a form of structural variation in the human genome that provides medical insight into complex human diseases; while whole-genome sequencing is becoming more affordable, whole-exome sequencing (WES) remains an important...

  • Article
  • Open Access
12 Citations
3,588 Views
23 Pages

18 August 2021

Deep learning has recently emerged as a successful approach to produce accurate subgrid-scale (SGS) models for Large Eddy Simulations (LES) in combustion. However, the ability of these models to generalize to configurations far from their training di...

  • Systematic Review
  • Open Access
1 Citations
1,737 Views
35 Pages

High-risk industries like mining must address occupational safety to reduce accidents and fatalities. Training through role-playing, simulations, and Serious Games (SGs) can reduce occupational risks. This study aims to conduct a systematic literatur...

  • Article
  • Open Access
12 Citations
3,794 Views
14 Pages

Digital Filtering Techniques for Performance Improvement of Golay Coded TDM-FBG Sensor

  • Mohamed M. Elgaud,
  • Mohd Saiful Dzulkefly Zan,
  • Abdulfatah A. G. Abushagur,
  • Abdulwahhab E. Hamzah,
  • Mohd Hadri Hafiz Mokhtar,
  • Norhana Arsad and
  • Ahmad Ashrif A. Bakar

23 June 2021

For almost a half-decade, the unique autocorrelation properties of Golay complementary pairs (GCP) have added a significant value to the key performance of conventional time-domain multiplexed fiber Bragg grating sensors (TDM-FBGs). However, the empl...

  • Article
  • Open Access
9 Citations
944 Views
16 Pages

19 October 2023

In a prior report (Raju et al., 2023) we concluded that, if the goal was to preserve events such as saccades, microsaccades, and smooth pursuit in eye-tracking recordings, data with sine wave frequencies less than 75 Hz were the signal and data above...

  • Article
  • Open Access
3 Citations
5,765 Views
12 Pages

23 March 2016

Narrowband Power Line Communications (NB-PLCs) are investigated as an alternative option for transferring low rate smart grid (SG) data via Medium Voltage (MV) power lines. In this framework, two variants of orthogonal frequency division multiplexing...

  • Article
  • Open Access
58 Citations
6,985 Views
18 Pages

20 November 2018

Due to the advantages of wide coverage and continuity, remotely sensed data are widely used for large-scale drought monitoring to compensate for the deficiency and discontinuity of meteorological data. However, few studies have focused on the capabil...

  • Article
  • Open Access
2 Citations
2,292 Views
24 Pages

25 October 2023

Fine spatiotemporal resolution snow monitoring at the watershed scale is crucial for the management of snow water resources. This research proposes a cloud removal algorithm via snow grain size (SGS) gap-filling based on a space–time extra tree...

  • Article
  • Open Access
892 Views
17 Pages

7 May 2025

To tackle the intricate challenges of nonlinearity and non-stationarity in lead-acid battery degradation data, this paper introduces the SG-LSTM model, an innovative approach to battery health prediction. This model uniquely integrates Singular Spect...

  • Article
  • Open Access
13 Citations
1,869 Views
15 Pages

Rapid and Non-Destructive Geographical Origin Identification of Chuanxiong Slices Using Near-Infrared Spectroscopy and Convolutional Neural Networks

  • Yuxing Huang,
  • Yang Pan,
  • Chong Liu,
  • Lan Zhou,
  • Lijuan Tang,
  • Huayi Wei,
  • Ke Fan,
  • Aichen Wang and
  • Yong Tang

Ligusticum Chuanxiong, a perennial herb of considerable medicinal value commonly known as Chuanxiong, holds pivotal importance in sliced form for ensuring quality and regulating markets through geographical origin identification. This study introduce...

  • Article
  • Open Access
906 Views
19 Pages

The Influence of Viewing Geometry on Hyperspectral-Based Soil Property Retrieval

  • Yucheng Gao,
  • Lixia Ma,
  • Zhongqi Zhang,
  • Xianzhang Pan,
  • Ziran Yuan,
  • Changkun Wang and
  • Dongsheng Yu

18 July 2025

Hyperspectral technology has been widely applied to the retrieval of soil properties, such as soil organic matter (SOM) and particle size distribution (PSD). However, most previous studies have focused on hyperspectral data acquired from the nadir di...

  • Article
  • Open Access
4 Citations
2,762 Views
19 Pages

The Strategy of Active Grid Frequency Support for Virtual Synchronous Generator

  • Lingfang Yang,
  • Junpeng Ma,
  • Shunliang Wang,
  • Tianqi Liu,
  • Zihao Wu,
  • Ruogu Wang and
  • Lutian Tang

Virtual synchronous generator (VSG) control is a promising control approach for voltage source converters as an interface between new energy sources and the power grid. VSG is a grid-friendly control scheme, which can imitate the mechanical inertia o...

  • Article
  • Open Access
16 Citations
3,480 Views
13 Pages

Catalytic Abatement of Volatile Organic Compounds and Soot over Manganese Oxide Catalysts

  • Miguel Jose Marin Figueredo,
  • Clarissa Cocuzza,
  • Samir Bensaid,
  • Debora Fino,
  • Marco Piumetti and
  • Nunzio Russo

12 August 2021

A set of manganese oxide catalysts was synthesized via two preparation techniques: solution combustion synthesis (Mn3O4/Mn2O3-SCS and Mn2O3-SCS) and sol-gel synthesis (Mn2O3-SG550 and Mn2O3-SG650). The physicochemical properties of the catalysts were...

  • Article
  • Open Access
377 Views
13 Pages

23 December 2025

The development of rapid and intelligent methods is urgently needed for wheat quality evaluation. Using the prediction of wet gluten content as a case study, this work systematically investigated the performance of various machine learning algorithms...

  • Article
  • Open Access
17 Citations
2,283 Views
17 Pages

7 October 2022

Vegetation phenology changes are able to reveal climate-change-associated ecosystem feedback mechanisms. In this study, Qinghai–Tibet Plateau (QTP) alpine vegetation phenological information was extracted from the normalised difference vegetati...

  • Article
  • Open Access
3 Citations
2,607 Views
21 Pages

27 October 2022

In order to improve the downlink communication performance of the traditional LoRa wide area network (LoRaWAN), a LoRaWAN downlink routing control strategy based on the software defined networks (SDN) framework and the improved auto-regressive integr...

  • Article
  • Open Access
14 Citations
5,244 Views
19 Pages

22 June 2018

Studying the effects of drought on forest ecosystems is important in developing a better understanding of forest phenology and productivity. Many previous studies were based on single drought events, whereas effects of recurrent droughts have not bee...

  • Article
  • Open Access
13 Citations
2,900 Views
21 Pages

28 August 2023

A tunnel health monitoring (THM) system ensures safe operations and effective maintenance. However, how to effectively process and denoise several data collected by THM remains to be addressed, as well as safety early warning problems. Thus, an integ...

  • Article
  • Open Access
17 Citations
3,389 Views
15 Pages

Analysis of Pre-Earthquake Space Electric Field Disturbance Observed by CSES

  • Zhong Li,
  • Baiyi Yang,
  • Jianping Huang,
  • Huichao Yin,
  • Xuming Yang,
  • Haijun Liu,
  • Fuzhi Zhang and
  • Hengxin Lu

In order to explore the abnormal disturbance of the space electric field caused by earthquakes using the electric field data of the ULF and VLF frequency bands of the electric field observed by the ZH-1 satellite, and taking the Mw7.7 earthquake in t...

  • Article
  • Open Access
61 Citations
9,276 Views
19 Pages

Evaluation of Remote Sensing Inversion Error for the Above-Ground Biomass of Alpine Meadow Grassland Based on Multi-Source Satellite Data

  • Baoping Meng,
  • Jing Ge,
  • Tiangang Liang,
  • Shuxia Yang,
  • Jinglong Gao,
  • Qisheng Feng,
  • Xia Cui,
  • Xiaodong Huang and
  • Hongjie Xie

16 April 2017

It is not yet clear whether there is any difference in using remote sensing data of different spatial resolutions and filtering methods to improve the above-ground biomass (AGB) estimation accuracy of alpine meadow grassland. In this study, field mea...

  • Article
  • Open Access
1 Citations
609 Views
19 Pages

Triple Filtering of Terrain Conductivity Data for Precise Tracing of Underground Utilities

  • Mohamed Rashed,
  • Abdulaziz Alqarawy,
  • Nassir Al-Amri,
  • Riyadh Halawani,
  • Milad Masoud and
  • Maged El Osta

Terrain conductivity meters (TCMs) are efficient devices for different sorts of subsurface investigations, including detecting and tracing buried utilities, such as metallic pipes and cables. However, data collected using TCMs are usually ambiguous a...

  • Article
  • Open Access
2 Citations
1,986 Views
19 Pages

11 November 2024

Dryland ecosystems are highly sensitive to climate change, making vegetation monitoring crucial for understanding ecological dynamics in these regions. In recent years, climate change, combined with large-scale ecological restoration efforts, has led...

  • Article
  • Open Access
21 Citations
4,839 Views
16 Pages

10 October 2019

In this paper, a novel hybrid method combining adaptive chirp mode pursuit (ACMP) with an adaptive multiscale Savitzky–Golay filter (AMSGF) based on adaptive moving average (AMA) is proposed for offline denoising micro-electromechanical system...

  • Article
  • Open Access
6 Citations
4,237 Views
21 Pages

1 September 2024

Forest disturbance mapping plays an important role in furthering our understanding of forest dynamics. The Landsat-based detection of Trends in Disturbance and Recovery (LandTrendr) algorithm is widely used in forest disturbance mapping. However, it...

  • Article
  • Open Access
5 Citations
3,962 Views
10 Pages

Assessment of Chemical Fiber Air Filter for General Ventilation

  • Yanju Li,
  • Pengchang Chai,
  • Yu Wang and
  • Zelin Cheng

7 December 2021

Air filters for general ventilation have mainly been used to control the concentration of indoor particulate matter. In this study, the pressure differential, test dust capacity, quality factor and operating life of class F8 pleat–plate and mul...

  • Article
  • Open Access
1 Citations
1,509 Views
13 Pages

Hybrid Filtration Process for Gas Desulfurization

  • Christelle Germain,
  • Morgane Poser,
  • Pascal Peu,
  • Annabelle Couvert and
  • Eric Dumont

15 December 2023

A hybrid desulfurization process combining a physical filtration stage on cellular concrete (CC abiotic filter, called CCAF) and a biotrickling filter (called BTF) filled with expanded schist as packing material was used to remove high H2S concentrat...

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