Preprints
Filtering by Subject: Engineering
Self Super-Resolution of Time-Separated Multispectral Bands
Published: 2024-11-25
Subjects: Engineering, Signal Processing
The usual system design compromise in high resolution satellites is to have a higher spatial resolution panchromatic (PAN) channel with 3 or 4 lower spatial resolution multispectral (MX) channels and generate a high spatial & spectral resolution prod- uct on ground by making use of the fusion techniques. Since the telescopes of such systems are designed to cater to modulation transfer [...]
Towards centimeter precision SAR-RFID localization
Published: 2024-11-20
Subjects: Engineering, Geomorphology, Physical Sciences and Mathematics
Radio-Frequency Identification (RFID) shows great potential for earth-sciences applications, notably for landslide surface monitoring at a high spatio-temporal resolution with long-term robustness to meteorological events (rain, fog, snow). The ability to localize RFID tags using Unmanned Aerial Vehicles (UAV) in a Synthetic Aperture Radar (SAR) approach, would offer new possibilites for [...]
Granular column collapse: Analysing the effects of gravity levels
Published: 2024-11-20
Subjects: Earth Sciences, Engineering
Creep Deformation and Long-Term Strength of Ice-Rich Permafrost in Northern Alaska
Published: 2024-11-19
Subjects: Engineering
The degradation of permafrost alters deformation and long-term strength, posing challenges to existing and future civil infrastructure in northern Alaska. Long-term strength is a critical parameter in the design of civil projects; yet data on the creep deformation and long-term strength of undisturbed permafrost in northern Alaska remain limited. Soil particle fraction, unfrozen water content, [...]
SiCTT.net: Satellite Image Clustering Transpose Transformation Deep neural network for Mixed Pixel Deforestation Analysis in Optical Satellite for Land Use Land Cover Application
Published: 2024-11-14
Subjects: Education, Engineering, Life Sciences
Deforestation monitoring in Brazil for Land use land cover application is the combination of up-to-date monitoring and accuracy. For detailed observation on time, need a Sentinel-2 multi-spectral satellite imagery which is a combination of multiple bands of different frequency for better analysis. Sentinel-2 Multispectral Images are the combination of high resolution and low-resolution images [...]
Current and Future Impacts of Lithium Carbonate from Brines: A Global Regionalized Life Cycle Assessment Model
Published: 2024-11-13
Subjects: Engineering
Lithium (Li) is essential for decarbonization strategies, such as electric vehicles and renewable energy storage, experiencing the largest growth rates among metals required for low-carbon technologies. To meet this demand, the raw materials sector must increase current capacities and develop new ones at untapped deposits. Understanding life cycle impacts is crucial to avoid severe environmental [...]
Flooding, nonlinear dynamics and Jensen’s inequality: Analyzing the damping and amplification of inundation extent with river discharge nonstationarity
Published: 2024-11-12
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Hydrology, Risk Analysis
Examining quality of DGNSS derived positioning in data in urban city- A case study of an urban city in India
Published: 2024-11-11
Subjects: Engineering
GNSS observations are carried out in static mode/ Differential global navigation satellite system (DGNSS) and dynamic mode / Real time Kinematics (RTK) mainly. RTK mode of observation is useful in case of navigation whereas in order to determine very precise positioning, static / DGNSS/ DGPS mode is recommended. In this study, we have examined the quality of DGNSS survey of an urban city in India [...]
Automatic detection of number of aircrafts over satellite data using deep learning
Published: 2024-11-11
Subjects: Engineering
: Instance segmentation is a novel technique to automatically detect and count the number of objects from satellite imagery for various applications using deep learning frameworks such as Mask-RCNN and YOLO. In this paper, we have implemented the YOLOv5 and YOLOv7 instance segmentation models on high-resolution satellite imagery (0.31m to 1.74m) of both panchromatic (16-bit PAN) and [...]
Dictionary Learning with Convolutional Structure for Seismic Data Denoising and Interpolation
Published: 2024-11-08
Subjects: Earth Sciences, Electrical and Computer Engineering, Engineering, Geophysics and Seismology, Physical Sciences and Mathematics, Signal Processing
Seismic data inevitably suffers from random noise and missing traces in field acquisition. This limits the utilization of seismic data for subsequent imaging or inversion applications. Recently, dictionary learning has gained remarkable success in seismic data denoising and interpolation. Variants of the patch-based learning technique, such as the K-SVD algorithm, have been shown to improve [...]
Determination of Water Quality Beside the Industrial Area of Turag River in Dhaka, Bangladesh.
Published: 2024-11-07
Subjects: Civil and Environmental Engineering, Engineering, Environmental Engineering
The study deals with assessing water quality parameters including pH, total dissolved solids (TDS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), temperature, transparency, and turbidity of the Turag River in Gazipur, Bangladesh based on the standards of the Department of Environment (DoE) in Bangladesh and the Environmental Quantity Standard (EQS). The [...]
Flood Resilience Assessment of Interconnected Critical Infrastructures
Published: 2024-11-07
Subjects: Civil and Environmental Engineering, Engineering, Environmental Engineering, Environmental Sciences, Risk Analysis, Systems Engineering, Water Resource Management
Undertaking systemic risk assessments of critical infrastructures (CIs) is necessary to improve understanding, mitigate impacts, and increase resilience to cascading effects of intensifying hydrometeorological hazards. This paper presents a novel quantitative approach for simulating local physical interdependencies between multiple infrastructure sectors that may be disrupted by floods. [...]
Population estimation using 3D city modelling and Carto2S datasets - A case study
Published: 2024-11-06
Subjects: Engineering
With the launch of Carto2S series of satellites, high resolution images (0.6-1.0 meters) are acquired and available for use. High resolution Digital Elevation Model (DEM) with better accuracies can be generated using C2S multi-view and multi date datasets. DEMs are further used as an input to derive Digital terrain models (DTMs) and to extract accurate heights of the objects (building and tree) [...]
Nitrate-N trends in Mississippi and Atchafalaya River Basin Watersheds: Exploring correlations of watershed features with nutrient transport components 2000-2020.
Published: 2024-11-06
Subjects: Engineering
Nutrient reduction strategies in the Mississippi and Atchafalaya River Basin (MARB) have been implemented since mid-2010’s to attenuate the impacts of non-point source pollution to the Gulf of Mexico. Of all nutrients, nitrate represents the largest threat due to its extended presence throughout the basin and its high solubility in water. To evaluate the performance of state reduction strategies, [...]
Evaluation and Planning Application of Oasis Habitat Stability in Arid Regions Based on the PPSD Model: A Case Study of Wensu County, Xinjiang.
Published: 2024-11-05
Subjects: Engineering
Oasis regions, with high population and wealth density, are vital for human habitation and ecological balance in arid areas, where their stability and sustainability are crucial for human habitation and ecological balance. Current research on oasis stability often focuses on the impact of natural and human factors on oasis systems, overlooking the interactive and dynamic role of human and natural [...]