Article
Geosciences, Multidisciplinary
Jae-In Kim, Junhwa Chi, Ali Masjedi, John Evan Flatt, Melba M. Crawford, Ayman F. Habib, Joohan Lee, Hyun-Cheol Kim
Summary: Hyperspectral data are gaining popularity in remote sensing and signal processing communities due to increased spectral information, but are often limited by narrow spectral bands. While current datasets lack resolution for identifying small objects, advancements in technology now allow hyperspectral imaging systems to be mounted on small aerial vehicles for improved capabilities in detection.
GEOSCIENCE DATA JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shuwei Chen, Yue Yin, Xiaozhe Pang, Congkai Wang, Lei Wang, Junqi Wang, Jiangfei Jia, Xinxue Liu, Shenghao Xu, Xiliang Luo
Summary: Light and endogenous APE1-triggered plasmonic antennas were developed for accurate tumor-specific subcellular molecular imaging with enhanced spatial resolution.
Article
Environmental Sciences
Nicola Paciolla, Chiara Corbari, Antonino Maltese, Giuseppe Ciraolo, Marco Mancini
Summary: The study explores the impact of scale effects on fluxes modelled with the FEST-EWB model, finding that low resolution modelling may produce some differences, but the model can still generate high-quality results.
Article
Optics
Yanjie Meng, Cailing Fu, Lin Chen, Chao Du, Huajian Zhong, Yiping Wang, Jun He, Weijia Bao
Summary: In this study, a phi-optical frequency domain reflectometry (OFDR) strain sensor with a submillimeter-spatial-resolution of 233 mu m was demonstrated using femtosecond laser induced permanent scatters (PSs). The strain distribution was demodulated using a novel PSs-assisted phi-OFDR method based on the phase difference of P-and S-polarized RBS signal.
Article
Engineering, Electrical & Electronic
Gertjan Maenhout, Tomislav Markovic, Ilja Ocket, Bart Nauwelaers
Summary: This paper presents a nondestructive complementary split ring resonator (CSRR) with a large shift in resonant frequency and penetration depth. Additionally, a deconvolution-based method is proposed to enhance the spatial resolution of the sensors.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Jingyu Wu, Mohan Wang, Kehao Zhao, Sheng Huang, Mohamed Zaghloul, Rongtao Cao, David Carpenter, Guiqiu Zheng, Steven Rountree, K. P. Chen
Summary: This study utilized femtosecond laser direct writing to inscribe Type-II modifications in standard telecom fibers and radiation-hardened fibers, enhancing Rayleigh backscattering signals for distributed temperature measurements in an in-pile environment. The results demonstrated the stability of laser-inscribed fiber sensors under extreme conditions and their ability to monitor the temperature profile of a nuclear reactor core in real-time.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Gustavo Daniel Martin-del-Campo-Becerra, Sergio Alejandro Serafin-Garcia, Andreas Reigber, Susana Ortega-Cisneros, Matteo Nanninie
Summary: The spatial spectral estimation problem has various applications and can be approached using parametric methods like MUSIC. This article suggests using regularization to improve the responses obtained by parametric techniques and explores the possibility of selecting a single relatively large model order for enhancement through regularization. The novel strategy is demonstrated in the context of synthetic aperture radar tomography.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2021)
Article
Ecology
Erika Bazzato, Leonardo Rosati, Simona Canu, Michele Fiori, Emmanuele Farris, Michela Marignani
Summary: Understanding the effects of climate on biodiversity and its responses to climatic variation is crucial for conservation; using fine-grain climate data is necessary for reliable modeling in physiographically complex landscapes, with caution recommended when using global data-derived bioclimatic variables in such regions.
ECOLOGICAL MODELLING
(2021)
Article
Astronomy & Astrophysics
Olivia H. Wilkins, P. Brandon Carroll, Geoffrey A. Blake
Summary: Using high-angular-resolution observations with ALMA, we investigated the structure and variation of physical and chemical components in the Orion KL nebula on small spatial scales. We found that subregions of the Hot Core have higher excitation temperatures in smaller scales, indicating possible internal heating sources. Additionally, a bipolar feature with a southeast-northwest orientation was observed in the velocity field, suggesting the presence of an outflow. Evidence of a possible internal heating source toward the Northwest Clump was also identified. The Hot Core-SW region was identified as a particularly heterogeneous region bridging the Hot Core and Compact Ridge.
ASTROPHYSICAL JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Li Shen, Zhiyong Zhao, Can Zhao, Hao Wu, Chao Lu, Ming Tang
Summary: A method for improving spatial resolution using measurements obtained with long pulses has been developed for Brillouin optical time domain analysis (BOTDA) systems utilizing the total variation deconvolution algorithm. The impact of Brillouin gain temporal envelope frequency dependency on the deconvolution algorithm results is thoroughly analyzed, with DPP technique utilized to eliminate BFS distortion. The proposed method allows for distortion-free Brillouin distributed sensing with higher spatial resolution and enhanced SNR.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
Mantang Guo, Junhui Hou, Jing Jin, Jie Chen, Lap-Pui Chau
Summary: This study proposes a novel learning-based framework for the reconstruction of high-quality light fields from acquisitions via coded aperture. The method elegantly incorporates measurement observation into the deep learning framework, avoiding complete reliance on data-driven priors. Experimental results demonstrate that the proposed method outperforms existing approaches both quantitatively and qualitatively.
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
(2022)
Article
Geography, Physical
Behrooz Moradi, Mohammad Javad Valadan Zoej, Sayad Yaghoobi, Somayeh Yavari
Summary: Linear features in remotely sensed imagery have gained attention and using a quasi-observation assumption in mathematical equations can improve georeferencing accuracy, despite increasing processing time. The proposed methodology offers an efficient solution for increasing registration accuracy.
PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING
(2021)
Article
Environmental Sciences
Jordan Gacutan, Edwina Foulsham, John W. Turnbull, Stephen D. A. Smith, Graeme F. Clark
Summary: Anthropogenic debris has widespread impacts on aquatic ecosystems, causing entanglement, ingestion, and bioaccumulation. The consequences of debris on individual organisms are known, but their impacts at management scales are poorly understood. This study provides a methodology to estimate specific debris items' risks to different organisms within a management area. Risk is determined by the consequence of interaction and the likelihood of exposure. The study identifies high-risk debris items and spatially assesses their variability, allowing for informed management decisions.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Engineering, Electrical & Electronic
Shuai Li, Zengguang Qin, Zhaojun Liu, Xiyu Yang, Yanping Xu
Summary: This study proposes and demonstrates a long-distance optical frequency domain reflectometry (OFDR) with high spatial resolution based on time division multiplexing. By reconfiguring the system layout in a time-division-multiplexed manner, distributed strain sensing with high spatial resolution over long sensing range can be achieved. The proposed system allows flexible spatial resolutions in each sub-sensing unit without crosstalk among them.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Stephen E. Obrike, Stuart L. Barr, Pauline E. Miller, Goodluck K. Anudu
Summary: An evidential reasoning multi-source geospatial integration approach was developed to recognize and predict landslide susceptibility in transport corridors. By integrating airborne laser scanning, digital map datasets, and imagery data, along with a novel method for characterizing soil moisture distribution, numeric measures of slope instability were spatially characterized.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
