document

Quantifying and modelling the effect of external and internal vegetation water dynamics on radar data

Khabbazan, S. (author)

Agriculture plays a critical role in the economy and environment worldwide, and the provision of real-time, reliable information on large-scale agricultural activity is essential for precision agriculture and global economic prosperity. In this context, remote sensing, especially through Synthetic Aperture Radar (SAR), can play an important role...

doctoral thesis 2024

document

Analyzing coastal erosion and sedimentation using Sentinel-1 SAR change detection: An application on the Volta Delta, Ghana

di Biase, V. (author), Hanssen, R.F. (author)

Ghana's coastline has been facing erosion and sedimentation phenomena for several decades, resulting in a serious threat to life and property considering that major urban settlements are located on the coast. In this region, there has been a lack of emphasis on comprehensive, large-scale investigations into coastal changes: prior research has...

journal article 2024

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Improving satellite remote sensing methodologies for analyzing landscape dynamics in arid environments with focus on Egypt

Delgado Blasco, José Manuel (author)

doctoral thesis 2023

document

Global and low-cost topographic data to support flood studies

Yan, Kun (author), Neal, Jeffrey C. (author), Solomatine, D.P. (author), Di Baldassarre, Giuliano (author)

This chapter provides an overview of global and low-cost topographic data to support flood studies, with a focus on usefulness of shuttle radar topography mission (SRTM) topography in supporting two-dimensional hydraulic modeling of floods. In particular, flood propagation and inundation modeling of a 10-km reach of the River Dee (United...

book chapter 2023

document

A 1-GS/s 6–8-b Cryo-CMOS SAR ADC for Quantum Computing

Kiene, G. (author), Overwater, R.W.J. (author), Catania, Alessandro (author), Gunaputi Sreenivasulu, A.M. (author), Bruschi, Paolo (author), Charbon-Iwasaki-Charbon, E. (author), Babaie, M. (author), Sebastiano, F. (author)

This article presents a two-times interleaved, loop-unrolled SAR analog-to-digital converter (ADC) operational from 300 down to 4.2 K. The 6-8-bit resolution and the sampling speed up to 1 GS/s are targeted at digitizing the multi-channel frequency-multiplexed input in a spin-qubit reflectometry readout for quantum computing. To optimize the...

journal article 2023

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Obukhov Length Estimation From Spaceborne Radars

O’Driscoll, Owen (author), Mouche, Alexis (author), Chapron, Bertrand (author), Kleinherenbrink, M. (author), López-Dekker, Paco (author)

Two air-sea interaction quantification methods are employed on synthetic aperture radar (SAR) scenes containing atmospheric-turbulence signatures. Quantification performance is assessed on Obukhov length L, an atmospheric surface-layer stability metric. The first method correlates spectral energy at specific turbulence-spectrum wavelengths...

journal article 2023

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Modeling SAR Observables by Combining a Crop-Growth Model With Machine Learning

Nikaein, T. (author), López-Dekker, Paco (author), Steele-Dunne, S.C. (author), Kumar, V. (author), Huber, M. (author)

In this article, our aim is to estimate synthetic aperture radar (SAR) observables, such as backscatter in VV and VH polarizations, as well as the VH/VV ratio, cross ratio, and interferometric coherence in VV, from agricultural fields. In this study, we use the decision support system for agrotechnology transfer (DSSAT) crop-growth simulation...

journal article 2023

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Combining remote sensing techniques and field surveys for post-earthquake reconnaissance missions

Giardina, Giorgia (author), Macchiarulo, V. (author), Foroughnia, Fatemeh (author), Jones, Joshua N. (author), Whitworth, Michael R.Z. (author), Voelker, Brandon (author), Milillo, Pietro (author), Penney, Camilla (author), Adams, Keith (author), Kijewski-Correa, Tracy (author)

Remote reconnaissance missions are promising solutions for the assessment of earthquake-induced structural damage and cascading geological hazards. Space-borne remote sensing can complement in-field missions when safety and accessibility concerns limit post-earthquake operations on the ground. However, the implementation of remote sensing...

journal article 2023

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Permanent Laser Scanner and Synthetic Aperture Radar Data: Correlation Characterisation at a Sandy Beach

di Biase, V. (author), Kuschnerus, M. (author), Lindenbergh, R.C. (author)

In recent years, our knowledge of coastal environments has been enriched by remotely sensed data. In this research, we co-analyse two sensor systems: Terrestrial Laser Scanning (TLS) and satellite-based Synthetic Aperture Radar (SAR). To successfully extract information from a combination of different sensors systems, it should be understood how...

journal article 2022

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Evaluation of SAR and Optical Data for Flood Delineation Using Supervised and Unsupervised Classification

Foroughnia, Fatemeh (author), Alfieri, S.M. (author), Menenti, M. (author), Lindenbergh, R.C. (author)

Precise and accurate delineation of flooding areas with synthetic aperture radar (SAR) and multi-spectral (MS) data is challenging because flooded areas are inherently heterogeneous as emergent vegetation (EV) and turbid water (TW) are common. We addressed these challenges by developing and applying a new stepwise sequence of unsupervised and...

journal article 2022

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Personalized local SAR prediction for parallel transmit neuroimaging at 7T from a single T1-weighted dataset

Brink, Wyger M. (author), Yousefi, Sahar (author), Bhatnagar, Prernna (author), Remis, R.F. (author), Staring, M. (author), Webb, A. (author)

Purpose: Parallel RF transmission (PTx) is one of the key technologies enabling high quality imaging at ultra-high fields (≥7T). Compliance with regulatory limits on the local specific absorption rate (SAR) typically involves over-conservative safety margins to account for intersubject variability, which negatively affect the utilization of...

journal article 2022

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Cryogenic Comparator Characterization and Modeling for a Cryo-CMOS 7b 1-GSa/s SAR ADC

Kiene, G. (author), GUNAPUTI SREENIVASULU, A.M. (author), Overwater, R.W.J. (author), Babaie, M. (author), Sebastiano, F. (author)

This paper reports the experimental characterization and modelling of a stand-Alone StrongARM comparator at both room temperature (RT) and cryogenic temperature (4.2 K). The observed 6-dB improvement in the comparator input noise at 4.2 K is attributed to the reduction of the thermal noise and to the suppressed shot noise in the MOS...

conference paper 2022

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Open Building and User Agency: Early and Contemporary Experiments in the Netherlands

Cornago Bonal, I. (author), van den Heuvel, D. (author)

This chapter discusses the notion of ‘Open Building’ through its conceptualisations and implementations in the Netherlands since the 1960s until today. It focuses on the place of dwellers’ agency in the development of residential open buildings to investigate the potential of users’ empowerment. <br/><br/>The ‘Open Building’ approach synthesises...

book chapter 2022

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Surface Water Mapping and Flood Monitoring in the Mekong Delta Using Sentinel-1 SAR Time Series and Otsu Threshold

Tran, Khuong H. (author), Menenti, M. (author), Jia, Li (author)

The annual flood and the alteration in hydrological regimes are the most vital concerns in the Vietnamese Mekong Delta (VMD). Although synthetic aperture radar (SAR) Sentinel-1 imagery is widely used for water management, only a few studies have used Sentinel-1 data for mapping surface water and monitoring flood events in the VMD. This study...

journal article 2022

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Sentinel-1 Backscatter Time Series for Characterization of Evapotranspiration Dynamics over Temperate Coniferous Forests

Mueller, Marlin M. (author), Dubois, Clémence (author), Jagdhuber, Thomas (author), Hellwig, Florian M. (author), Pathe, Carsten (author), Schmullius, Christiane (author), Steele-Dunne, S.C. (author)

Forests’ ecosystems are an essential part of the global carbon cycle with vast carbon storage potential. These systems are currently under external pressures showing increasing change due to climate change. A better understanding of the biophysical properties of forests is, therefore, of paramount importance for research and monitoring...

journal article 2022

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Crop-Growth Driven Forward-Modeling of Sentinel-1 Observables Using Machine-Learning

Nikaein, T. (author), Kummer, Vineet (author), Steele-Dunne, S.C. (author), López-Dekker, Paco (author)

This paper presents an approach to implement a forward model for Sentinel-1 copol and crosspol backscatter and coherence using crop bio-geophysical parameters namely leaf area index, biomass, canopy height, soil moisture and root zone moisture as inputs for the maize. These required input parameters are generated using Decision Support System...

conference paper 2022

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Environmental Strain on Beach Environments Retrieved and Monitored by Spaceborne Synthetic Aperture Radar

di Biase, V. (author), Hanssen, R.F. (author)

Environmental effects and climate change are lately representing an increasing strain on coastal areas, whose topography strongly depends on these conditions. However, the processes by which weather and environmental phenomena influence the highly variable beach morphology are still unknown. Continuous monitoring of the beach environment is...

journal article 2021

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Integrating intensity and context for improved supervised river ice classification from dual-pol Sentinel-1 SAR data

de Roda Husman, S. (author), Van der Sanden, Joost (author), Lhermitte, S.L.M. (author), Eleveld, M.A. (author)

River ice is a major contributor to flood risk in cold regions due to the physical impediment of flow caused by ice jamming. Although a variety of classifiers have been developed to distinguish ice types using HH or VV intensity of SAR data, mostly based on data from RADARSAT-1 and -2, these classifiers still experience problems with breakup...

journal article 2021

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Power-Efficiency Evolution of Capacitive Sensor Interfaces

Tan, Zhichao (author), Jiang, H. (author), Zhang, H. (author), Tang, Xiyuan (author), Xin, Haoming (author), Nihtianova, S. (author)

Recent years have witnessed an improvement in the energy efficiency of capacitive sensor interfaces by more than three orders of magnitude. This article reviews the architectural and circuit innovations that have contributed to this progress. The fundamental limit on the energy consumption of capacitive sensor interfaces is discussed, as well...

journal article 2021

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Remote sensing-based automatic detection of shoreline position: A case study in apulia region

Spinosa, A. (author), Ziemba, A.M. (author), Saponieri, Alessandra (author), Damiani, Leonardo (author), El Serafy, G.Y.H. (author)

Remote sensing and satellite imagery have become commonplace in efforts to monitor and model various biological and physical characteristics of the Earth. The land/water interface is a continually evolving landscape of high scientific and societal interest, making the mapping and monitoring thereof particularly important. This paper aims at...

journal article 2021