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In a radio interferometer, the determination of geometrical antenna positions relies on accurate calibration of the dry and wet delay of the atmosphere above each antenna. For the Atacama Large Millimeter/Submillimeter Array (ALMA), which…

The Radiative Transfer Model (RTM) and the retrieval algorithm, incorporated in the SCIATRAN 2.2 software package developed at the Institute of Remote Sensing/Institute of Enviromental Physics of Bremen University (Germany), allows to…

天体物理仪器与方法 · 物理学 2012-09-12 A. Gardini , J. Maíz Apellániz , E. Pérez , J. A. Quesada , B. Funke

Irrigation mapping plays a crucial role in effective water management, essential for preserving both water quality and quantity, and is key to mitigating the global issue of water scarcity. The complexity of agricultural fields, adorned…

计算机视觉与模式识别 · 计算机科学 2024-04-19 Oishee Bintey Hoque , Samarth Swarup , Abhijin Adiga , Sayjro Kossi Nouwakpo , Madhav Marathe

Ground-based astronomy has to correct astronomical observations from the impact of the atmospheric transparency and its variability.The current objective of several observatories is to achieve a sub-percent level monitoring of atmospheric…

天体物理仪器与方法 · 物理学 2019-10-08 A. Guyonnet , S. Dagoret-Campagne , N. Mondrik

Dose-Response Functions (DRFs) are widely used in estimating corrosion and/or soiling levels of materials used in constructions and cultural monuments. These functions quantify the effects of air pollution and environmental parameters on…

Many studies have recently explored the information from the satellite-remotely sensed data (SRSD) for estimating the crop production statistics. The value of this information depends on the aerial and spatial resolutions of SRSD. The SRSD…

应用统计 · 统计学 2019-05-16 Sumanta Kumar Das , Randhir Singh

Weather radar data are critical for nowcasting and an integral component of numerical weather prediction models. While weather radar data provide valuable information at high resolution, their ground-based nature limits their availability,…

大气与海洋物理 · 物理学 2024-03-07 Çağlar Küçük , Apostolos Giannakos , Stefan Schneider , Alexander Jann

Knowing the behavior of solar radiation at a geographic location is essential for the use of energy from the sun using photovoltaic systems; however, the number of stations for measuring meteorological parameters and for determining the…

机器学习 · 计算机科学 2022-04-13 Luis Eduardo Ordoñez Palacios , Víctor Bucheli Guerrero , Hugo Ordoñez

In real-time and high-resolution Earth observation imagery, Low Earth Orbit (LEO) satellites capture images that are subsequently transmitted to ground to create an updated map of an area of interest. Such maps provide valuable information…

网络与互联网体系结构 · 计算机科学 2023-07-18 Israel Leyva-Mayorga , Marc M. Gost , Marco Moretti , Ana Pérez-Neira , Miguel Ángel Vázquez , Petar Popovski , Beatriz Soret

We present a methodology based on interferometric synthetic aperture radar (InSAR) time series analysis that can provide surface (top 5 cm) soil moisture (SSM) estimations. The InSAR time series analysis consists of five processing steps. A…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Kleanthis Karamvasis , Vassilia Karathanassi

In this paper we present results from the NEFOCAST project, funded by the Tuscany Region, aiming at detecting and estimating rainfall fields from the opportunistic use of the rain-induced excess attenuation incurred in the downlink channel…

信号处理 · 电气工程与系统科学 2019-07-25 Filippo Giannetti , Marco Moretti , Ruggero Reggiannini , Attilio Vaccaro

Air pollution constitutes a global problem of paramount importance that affects not only human health, but also the environment. The existence of spatial and temporal data regarding the concentrations of pollutants is crucial for performing…

机器学习 · 计算机科学 2024-02-13 Teresa Bernardino , Maria Alexandra Oliveira , João Nuno Silva

The widespread use of Exogenous Organic Matter in agriculture necessitates monitoring to assess its effects on soil and crop health. This study evaluates optical Sentinel-2 satellite imagery for detecting digestate application, a practice…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Andreas Kalogeras , Dimitrios Bormpoudakis , Iason Tsardanidis , Dimitra A. Loka , Charalampos Kontoes

Soil moisture is critical component of crop health and monitoring it can enable further actions for increasing yield or preventing catastrophic die off. As climate change increases the likelihood of extreme weather events and reduces the…

图像与视频处理 · 电气工程与系统科学 2020-04-28 Conrad James Foley , Sagar Vaze , Mohamed El Amine Seddiq , Alexey Unagaev , Natalia Efremova

Improving the accuracy of soil moisture estimation is required for advancing irrigation scheduling and water conservation efforts. Central to this task are soil hydraulic parameters, which govern moisture dynamics but are rarely known…

系统与控制 · 电气工程与系统科学 2025-06-06 Bernard T. Agyeman , Erfan Orouskhani , Mohamed Naouri , Willemijn Appels , Maik Wolleben , Jinfeng Liu , Sirish L. Shah

Climate change is expected to increase the likelihood of drought events, with severe implications for food security. Unlike other natural disasters, droughts have a slow onset and depend on various external factors, making drought detection…

The main goal of this work is the analysis of new approaches to the study of the properties of astronomical sites. In particular, satellite data measuring aerosols have recently been proposed as a useful technique for site characterization…

天体物理学 · 物理学 2008-10-07 A. M. Varela , C. Bertolin , C. Muñoz-Tuñón , S. Ortolani , J. J. Fuensalida

The study of wireless channel behavior has been an active research topic for many years. However, there exists a noticeable scarcity of studies focusing on wireless channel characteristics in rural areas. With the advancement of smart…

网络与互联网体系结构 · 计算机科学 2024-04-29 Tianyi Zhang , Guoying Zu , Taimoor Ul Islam , Evan Gossling , Sarath Babu , Daji Qiao , Hongwei Zhang

Obtaining detailed and reliable data about local economic livelihoods in developing countries is expensive, and data are consequently scarce. Previous work has shown that it is possible to measure local-level economic livelihoods using…

机器学习 · 统计学 2017-11-13 Anthony Perez , Christopher Yeh , George Azzari , Marshall Burke , David Lobell , Stefano Ermon

Characterizing soil moisture (SM) around drip irrigation pipes is crucial for precise and optimized farming. Machine learning (ML) approaches are particularly suitable for this task as they can reduce uncertainties caused by soil conditions…

图像与视频处理 · 电气工程与系统科学 2024-06-07 Mohammad Ramezaninia , Mohammadreza Shams , Mohammad Zoofaghari