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4,393 Results Found

  • Article
  • Open Access
10 Citations
2,596 Views
15 Pages

22 December 2020

In order to enhance the real-time and retrieval performance of road traffic data filling, a real-time data filling and automatic retrieval algorithm based on the deep-learning method is proposed. In image detection, the depth representation is extrac...

  • Article
  • Open Access
7 Citations
2,263 Views
10 Pages

23 June 2022

A time-integration imaging polarimeter with continuous rotating retarder is presented, and its full-Stokes retrieving and configuration optimization are also demonstrated. The mathematical expression between the full-Stokes vector and the time-integr...

  • Article
  • Open Access
1 Citations
1,585 Views
9 Pages

22 July 2022

We report computer studies showing how the duration of memory for storage and retrieval of a classical bit can be increased to 100 times the decay time of an isolated atom, with no use of high-tech cold-atom preparations recently developed in the lig...

  • Article
  • Open Access
49 Citations
6,933 Views
18 Pages

15 October 2015

Satellite-derived soil moisture products have become an important data source for the study of land surface processes and related applications. For satellites with sun-synchronous orbits, these products are typically derived separately for ascending...

  • Article
  • Open Access
33 Citations
5,170 Views
17 Pages

20 January 2020

We present an eating detection algorithm for wearable sensors based on first detecting chewing cycles and subsequently estimating eating phases. We term the corresponding algorithm class as a bottom-up approach. We evaluated the algorithm using elect...

  • Article
  • Open Access
9 Citations
4,196 Views
25 Pages

Irrigation Timing Retrieval at the Plot Scale Using Surface Soil Moisture Derived from Sentinel Time Series in Europe

  • Michel Le Page,
  • Thang Nguyen,
  • Mehrez Zribi,
  • Aaron Boone,
  • Jacopo Dari,
  • Sara Modanesi,
  • Luca Zappa,
  • Nadia Ouaadi and
  • Lionel Jarlan

4 March 2023

The difficulty of calculating the daily water budget of irrigated fields is often due to the uncertainty surrounding irrigation amounts and timing. The automated detection of irrigation events has the potential to greatly simplify this process, and t...

  • Article
  • Open Access
25 Citations
5,191 Views
26 Pages

7 July 2021

Agricultural water use represents more than 70% of the world’s freshwater through irrigation water inputs that are poorly known at the field scale. Irrigation monitoring is thus an important issue for optimizing water use in particular with regards t...

  • Article
  • Open Access
5 Citations
2,144 Views
18 Pages

23 November 2021

A multi-layered interference mitigation approach can significantly improve the performance of Global Navigation Satellite System (GNSS) receivers in the presence of jamming. In this work, three levels of defence are considered including: pre-correlat...

  • Article
  • Open Access
13 Citations
6,629 Views
20 Pages

22 February 2018

Satellite-based monitoring can retrieve ground-level PM2.5 concentrations with higher-resolution and continuous spatial coverage to assist in making management strategies and estimating health exposures. The Sichuan Basin has a complex terrain and se...

  • Article
  • Open Access
3 Citations
2,846 Views
14 Pages

New BFS Retrieval Technique for Brillouin Optical Time Domain Analysis Sensor System

  • Haoyu Wei,
  • Yongjun Wang,
  • Qiming Wang,
  • Xiya Lu,
  • Hongxin Wu,
  • Lei Fan,
  • Chao Li and
  • Xiangjun Xin

In this paper, Gaussian smoothing (GS), non-local means (NLM), and Quaternion Wavelet Transform (QWT) have been described in detail. Furthermore, a Brillouin optical time domain analysis (BOTDA) experimental system was built to verify the denoising a...

  • Article
  • Open Access
4 Citations
2,572 Views
21 Pages

21 January 2021

A NOAA/AVHRR dual-channel method over land is proposed to simultaneously retrieve aerosol optical depth (AOD) at 0.55 μm, and surface reflectance at 0.63 and 0.85 μm. Compared with previous well-established one-channel retrieval algorithms, thi...

  • Case Report
  • Open Access
2,232 Views
10 Pages

Transesophageal Echocardiography Guidance to Prevent and Manage Pitfalls from Abdominal Normothermic Regional Perfusion and Optimize Timing during Organ Retrieval from a Donor after Circulatory Death

  • Amedeo Bianchini,
  • Cristiana Laici,
  • Noemi Miglionico,
  • Maria Giacinta Bianchi,
  • Elena Tarozzi,
  • Enrico Bernardi,
  • Jessica Toni,
  • Erika Cordella,
  • Giovanni Vitale and
  • Antonio Siniscalchi

24 July 2023

An essential means of collecting more abdominal donor organs is controlled donation after circulatory death (cDCD). The organs are typically preserved during cDCD using the abdominal normothermic regional perfusion (A-NRP) technique to recirculate ox...

  • Review
  • Open Access
1,517 Views
36 Pages

The increasing scale and complexity of data mining outputs, such as frequent itemsets, association rules, sequences, and subgraphs have made efficient pattern retrieval a critical, yet underexplored challenge. This review addresses the organisation,...

  • Article
  • Open Access
2 Citations
963 Views
23 Pages

2 May 2025

In this paper, a wind retrieval method based on genetic algorithm-particle swarm optimization (GA-PSO) for the coherent Doppler wind lidar (CDWL) is proposed. The algorithm incorporates an advanced optimization framework that considers wind field spa...

  • Article
  • Open Access
3 Citations
1,407 Views
20 Pages

24 January 2025

In the modern manufacturing environment, the ability to collect and refine data in real time to deliver high-quality data is increasingly important in maintaining a competitive advantage and operational efficiency. This paper proposes a conceptual ar...

  • Article
  • Open Access
755 Views
17 Pages

Sugarcane Phenology Retrieval in Heterogeneous Agricultural Landscapes Based on Spatiotemporal Fusion Remote Sensing Data

  • Yingpin Yang,
  • Zhifeng Wu,
  • Dakang Wang,
  • Cong Wang,
  • Xiankun Yang,
  • Yibo Wang,
  • Jinnian Wang,
  • Qiting Huang,
  • Lu Hou and
  • Zongbin Wang
  • + 1 author

Accurate phenological information on sugarcane is crucial for guiding precise cultivation management and enhancing sugar production. Remote sensing offers an efficient approach for large-scale phenology retrieval, but most studies have primarily focu...

  • Article
  • Open Access
7 Citations
3,607 Views
19 Pages

Extreme Droughts Change in the Mekong River Basin: A Multidisciplinary Analysis Based on Satellite Data

  • Vo Tuong,
  • Thanh-Van Hoang,
  • Tien-Yin Chou,
  • Yao-Min Fang,
  • Chun-Tse Wang,
  • Thanh-Danh Tran and
  • Dung Duc Tran

28 September 2021

This study evaluates droughts in the Mekong River Basin (MKB) based on a multidisciplinary method, mainly using the Standardized Precipitation Index (SPI) and Mann–Kendall (MK) test. Precipitation data corresponding to the seasonality of the regional...

  • Technical Note
  • Open Access
7 Citations
2,964 Views
11 Pages

Assessment of Galileo E6B Data Demodulation Performance at High Latitudes: A Norwegian Vessel Case Study

  • Melania Susi,
  • Daniele Borio,
  • Ciro Gioia,
  • Morten Taraldsten Brunes,
  • Michael Dähnn,
  • Gro Grinde and
  • Christian Rost

19 November 2021

The Galileo High Accuracy Service (HAS) is currently in its testing phase, in which actual corrections are transmitted along with standard dummy messages. The dissemination of Precise Point Positioning (PPP) corrections is performed using an innovati...

  • Article
  • Open Access
1 Citations
1,467 Views
30 Pages

Leveraging Retrieval-Augmented Generation for Automated Smart Home Orchestration

  • Negin Jahanbakhsh,
  • Mario Vega-Barbas,
  • Iván Pau,
  • Lucas Elvira-Martín,
  • Hirad Moosavi and
  • Carolina García-Vázquez

29 April 2025

The rapid growth of smart home technologies, driven by the expansion of the Internet of Things (IoT), has introduced both opportunities and challenges in automating daily routines and orchestrating device interactions. Traditional rule-based automati...

  • Article
  • Open Access
8 Citations
4,866 Views
18 Pages

11 November 2022

Shenzhen has experienced rapid urbanization since the establishment of the Special Economic Zone in 1978. However, it is rare to witness high-speed urbanization in Shenzhen. It is important to study the LUCC progress in Shenzhen (regarding refusing m...

  • Article
  • Open Access
4 Citations
2,842 Views
17 Pages

VAT-SNet: A Convolutional Music-Separation Network Based on Vocal and Accompaniment Time-Domain Features

  • Xiaoman Qiao,
  • Min Luo,
  • Fengjing Shao,
  • Yi Sui,
  • Xiaowei Yin and
  • Rencheng Sun

8 December 2022

The study of separating the vocal from the accompaniment in single-channel music is foundational and critical in the field of music information retrieval (MIR). Mainstream music-separation methods are usually based on the frequency-domain characteris...

  • Article
  • Open Access
15 Citations
2,999 Views
16 Pages

Seismo-Deformation Anomalies Associated with the M6.1 Ludian Earthquake on August 3, 2014

  • Chieh-Hung Chen,
  • Xiaoning Su,
  • Kai-Chien Cheng,
  • Guojie Meng,
  • Strong Wen and
  • Peng Han

26 March 2020

A time-frequency method retrieving the acceleration changes in the terminal stage of the M6.1 Ludian earthquake in China is discussed in this article. The non-linear, non-stationary seismo-demformation was obtained by using the Hilbert–Huang tr...

  • Feature Paper
  • Article
  • Open Access
6 Citations
14,270 Views
26 Pages

30 November 2024

We present the Quantum Memory Matrix (QMM) hypothesis, which addresses the longstanding Black Hole Information Paradox rooted in the apparent conflict between Quantum Mechanics (QM) and General Relativity (GR). This paradox raises the question of how...

  • Article
  • Open Access
7 Citations
3,287 Views
23 Pages

Cross-Modal Transformer-Based Streaming Dense Video Captioning with Neural ODE Temporal Localization

  • Shakhnoza Muksimova,
  • Sabina Umirzakova,
  • Murodjon Sultanov and
  • Young Im Cho

24 January 2025

Dense video captioning is a critical task in video understanding, requiring precise temporal localization of events and the generation of detailed, contextually rich descriptions. However, the current state-of-the-art (SOTA) models face significant c...

  • Article
  • Open Access
3 Citations
2,951 Views
16 Pages

Development of an Intelligent Coal Production and Operation Platform Based on a Real-Time Data Warehouse and AI Model

  • Yongtao Wang,
  • Yinhui Feng,
  • Chengfeng Xi,
  • Bochao Wang,
  • Bo Tang and
  • Yanzhao Geng

19 October 2024

Smart mining solutions currently suffer from inadequate big data support and insufficient AI applications. The main reason for these limitations is the absence of a comprehensive industrial internet cloud platform tailored for the coal industry, whic...

  • Article
  • Open Access
4 Citations
4,203 Views
23 Pages

27 February 2025

To support data-driven decision-making in a Manufacturing Execution System (MES) environment, a system that can quickly and accurately analyze a wide range of production, quality, asset, and material information must be deployed. However, existing ME...

  • Article
  • Open Access
3 Citations
2,638 Views
14 Pages

10 August 2022

We study the time degradation of quantum information stored in a quantum memory device under a dissipative environment in a parameter range which is experimentally relevant. The quantum memory under consideration is comprised of an optomechanical sys...

  • Article
  • Open Access
49 Citations
6,545 Views
22 Pages

Real-Time Tropospheric Delays Retrieved from Multi-GNSS Observations and IGS Real-Time Product Streams

  • Cuixian Lu,
  • Xinghan Chen,
  • Gen Liu,
  • Galina Dick,
  • Jens Wickert,
  • Xinyuan Jiang,
  • Kai Zheng and
  • Harald Schuh

15 December 2017

The multi-constellation Global Navigation Satellite Systems (GNSS) offers promising potential for the retrieval of real-time (RT) atmospheric parameters to support time-critical meteorological applications, such as nowcasting or regional short-term f...

  • Article
  • Open Access
8 Citations
3,147 Views
21 Pages

1 December 2018

Technological evolution in the remote sensing domain has allowed the acquisition of large archives of satellite image time series (SITS) for Earth Observation. In this context, the need to interpret Earth Observation image time series is continuously...

  • Article
  • Open Access
183 Views
18 Pages

11 December 2025

In numerical weather prediction (NWP) models, radar data are commonly utilized to retrieve relative humidity fields, thereby mitigating forecast errors arising from uncertainties in the initial moisture field. This study addresses the degradation in...

  • Article
  • Open Access
2 Citations
2,145 Views
13 Pages

GNSS Real-Time ZTD/PWV Retrieval Based on PPP with Broadcast Ephemerides

  • Zongqiu Xu,
  • Shuhao Liu,
  • Yantian Xu,
  • Longjiang Tang,
  • Nannan Yang and
  • Gen Zhang

25 August 2024

GNSS precise point positioning (PPP) plays an important role in retrieving atmospheric water vapor values and performing numerical weather prediction. However, traditional PPP relies on real-time orbits and clocks, which require continuous internet o...

  • Article
  • Open Access
10 Citations
2,999 Views
26 Pages

A Near-Real-Time Method for Estimating Volcanic Ash Emissions Using Satellite Retrievals

  • Rachel E. Pelley,
  • David J. Thomson,
  • Helen N. Webster,
  • Michael C. Cooke,
  • Alistair J. Manning,
  • Claire S. Witham and
  • Matthew C. Hort

27 November 2021

We present a Bayesian inversion method for estimating volcanic ash emissions using satellite retrievals of ash column load and an atmospheric dispersion model. An a priori description of the emissions is used based on observations of the rise height...

  • Article
  • Open Access
2 Citations
2,549 Views
13 Pages

Real-Time Phase Retrieval Based on Cube-Corner Prisms Single Exposure

  • Hong Cheng,
  • Xiaotian Zhu,
  • Ju Li and
  • Zhengguang Tian

The phase retrieval method based on the Transport of Intensity Equation needs to record the light intensity information on two or more planes perpendicular to the optical axis propagating along the optical axis. Usually, a single CCD camera is moved...

  • Article
  • Open Access
1 Citations
766 Views
24 Pages

A Random Forest-Based CO2 Profile Emulator for Real-Time Prior Profile Generation in TanSat XCO2 Retrieval

  • Shaojie Wu,
  • Yang Wang,
  • Likun Zhang,
  • Heng Jia,
  • Xianmei Zhang,
  • Linglin Xu and
  • Yunxiao Dai

9 August 2025

Greenhouse gas monitoring satellites provide extensive observational data for the global remote sensing of atmospheric carbon dioxide (CO2), yet a critical limitation in utilizing these data is the dependence of the full physics retrieval accuracy on...

  • Article
  • Open Access
11 Citations
3,687 Views
31 Pages

Evaluation of BRDF Information Retrieved from Time-Series Multiangle Data of the Himawari-8 AHI

  • Xiaoning Zhang,
  • Ziti Jiao,
  • Changsen Zhao,
  • Jing Guo,
  • Zidong Zhu,
  • Zhigang Liu,
  • Yadong Dong,
  • Siyang Yin,
  • Hu Zhang and
  • Lei Cui
  • + 3 authors

29 December 2021

Recently, much attention has been given to using geostationary Earth orbit (GEO) meteorological satellite data for retrieving land surface parameters due to their high observation frequencies. However, their bidirectional reflectance distribution fun...

  • Article
  • Open Access
5 Citations
5,188 Views
18 Pages

25 February 2021

Learner-centered coaching and feedback are relevant to various educational contexts. Spaced retrieval enhances long-term knowledge retention. We examined the efficacy of Blank Slate, a novel spaced retrieval software application, to promote learning...

  • Article
  • Open Access
8 Citations
2,942 Views
17 Pages

6 January 2021

With the rapid development of the global navigation satellite system (GNSS), high-rate GNSS has been widely used for high-precision GNSS coseismic displacement retrieval. In recent decades, relative positioning (RP) and precise point positioning (PPP...

  • Article
  • Open Access
93 Citations
10,791 Views
20 Pages

20 November 2019

Crop phenology is an important parameter for crop growth monitoring, yield prediction, and growth simulation. The dynamic threshold method is widely used to retrieve vegetation phenology from remotely sensed vegetation index time series. However, cro...

  • Article
  • Open Access
16 Citations
4,236 Views
23 Pages

Plume Height Time-Series Retrieval Using Shadow in Single Spatial Resolution Satellite Images

  • Sophie Pailot-Bonnétat,
  • Andrew J. L. Harris,
  • Sonia Calvari,
  • Marcello De Michele and
  • Lucia Gurioli

3 December 2020

Volcanic plume height is a key parameter in retrieving plume ascent and dispersal dynamics, as well as eruption intensity; all of which are crucial for assessing hazards to aircraft operations. One way to retrieve cloud height is the shadow technique...

  • Article
  • Open Access
27 Citations
5,947 Views
15 Pages

1 January 2017

Leaf area index (LAI) is an important biophysical parameter and the retrieval of LAI from remote sensing data is the only feasible method for generating LAI products at regional and global scales. However, most LAI retrieval methods use satellite obs...

  • Article
  • Open Access
12 Citations
6,066 Views
19 Pages

26 September 2014

High-quality leaf area index (LAI) products retrieved from satellite observations are urgently needed for crop growth monitoring and yield estimation, land-surface process simulation and global change studies. In recent years, sequential assimilation...

  • Article
  • Open Access
46 Citations
8,491 Views
25 Pages

Inter-Comparison of Methods for Chlorophyll-a Retrieval: Sentinel-2 Time-Series Analysis in Italian Lakes

  • Milad Niroumand-Jadidi,
  • Francesca Bovolo,
  • Lorenzo Bruzzone and
  • Peter Gege

18 June 2021

Different methods are available for retrieving chlorophyll-a (Chl-a) in inland waters from optical imagery, but there is still a need for an inter-comparison among the products. Such analysis can provide insights into the method selection, integratio...

  • Feature Paper
  • Article
  • Open Access
16 Citations
4,397 Views
22 Pages

9 March 2018

In the present study, a Carbon Fibre Reinforced Polymer (CFRP) sample of trapezoid shape, consisting of internal artificial delaminations of various sizes and depth locations, is investigated by means of optical pulsed thermography for the retrieval...

  • Article
  • Open Access
35 Citations
8,979 Views
16 Pages

Although there has been considerable effort to use remotely sensed images to provide synoptic maps of total suspended matter (TSM), there are limited studies on universal TSM retrieval models. In this paper, we have developed a TSM retrieval model fo...

  • Article
  • Open Access
1,861 Views
22 Pages

20 December 2023

A space-time variational method is developed for retrieving upper-level vortex winds from geostationary satellite rapid infrared scans over hurricanes. In this method, new vortex-flow-dependent correlation functions are formulated for the radial and...

  • Article
  • Open Access
30 Citations
8,333 Views
20 Pages

21 April 2016

Long-term high-quality global leaf area index (LAI) and fraction of absorbed photosynthetically active radiation (FAPAR) products are urgently needed for the study of global change, climate modeling, and many other problems. As the successor of the M...

  • Article
  • Open Access
2 Citations
2,250 Views
15 Pages

Wide and Deep Learning Model for Satellite-Based Real-Time Aerosol Retrievals in China

  • Nana Luo,
  • Junxiao Zou,
  • Zhou Zang,
  • Tianyi Chen and
  • Xing Yan

30 April 2024

Machine learning methods have been recognized as rapid methods for satellite-based aerosol retrievals but have not been widely applied in geostationary satellites. In this study, we developed a wide and deep learning model to retrieve the aerosol opt...

  • Article
  • Open Access
29 Citations
6,956 Views
17 Pages

20 March 2018

The multiple global navigation satellite systems (multi-GNSS) bring great opportunity for the real-time retrieval of high-quality zenith tropospheric delay (ZTD), which is a critical quality for atmospheric science and geodetic applications. In this...

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