Sar Temporal Series Interpretation And Backscattering Modelling For Maize Growth Monitoring
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Sar Temporal Series Interpretation And Backscattering Modelling For Maize Growth Monitoring
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Author : Éric Auquière
language : en
Publisher: Presses univ. de Louvain
Release Date : 2001
Sar Temporal Series Interpretation And Backscattering Modelling For Maize Growth Monitoring written by Éric Auquière and has been published by Presses univ. de Louvain this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.
The research objective is to develop a methodology for the extraction of bio- and geophysical variables from Synthetic Aperture Radars (SAR) and for their use in the perspective of maize monitoring in an operational context. SARs interest agronomists because they present some advantages for vegetation monitoring. However, the actual revisit cycle of SARs is not sufficient for crop monitoring. The image processing chain we developed overcomes this issue and meets the 4 requirements for operational crop monitoring: a high temporal resolution, a high geometric accuracy, a short processing time and the preservation of the signal content. From the literature, we know that the interactions between the signal backscattered by the vegetation and by the underlying soil are very complex. To understand these interactions, we carried out very intensive ground campaigns. The resulting data set is very rich. It covers 3 growing seasons during which 30 ERS SAR images and 13 RADARSAT SAR images were acquired and processed. In total, 612 fields, i.e. 581 maize fields and 31 sugar beet fields were located and visited. These field campaigns represent 2500 field visits and more or less 7500 measurements of 8 variables. One of the major outputs of this research comes from the analysis of the temporal behaviour of the SAR signal distribution at both field and regional levels. The SAR signal is analysed by the mean of the per-field backscattering coefficient. Previous results concerning the respective contribution of soil and crop are confirmed. The research also addresses the use of several regional indicators. We point out a drop of per-field variation coefficient averaged at regional level and we link it to the decrease of the infra-parcel variability of the soil roughness and to the progressive masking effect of the crop canopy on different sources of variability. The spatial variability of the ERS per-field backscattering coefficients is related to the variability of the sowing dates. Finally, existing and new versions of the cloud model are calibrated and validated. The cloud model is adapted to account for the data available from the field campaigns. The results show that SAR do not allow the prediction of the maize biomass at the field level but they can be used to give an indication on the crop status at a regional level.
Global Urban Monitoring And Assessment Through Earth Observation
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Author : Qihao Weng
language : en
Publisher: CRC Press
Release Date : 2014-05-23
Global Urban Monitoring And Assessment Through Earth Observation written by Qihao Weng and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-23 with Technology & Engineering categories.
Cities and towns are the original producers of many of the global environmental problems related to waste disposal, and air and water pollution. There is a rapidly growing need for technologies that will enable monitoring of the world’s natural resources and urban assets, and managing exposure to natural and man-made risks. The Group on Earth Observation (GEO) calls for strengthening the cooperation and coordination among global observing systems and research programs. Global Urban Monitoring and Assessment through Earth Observation introduces this important international collaborative effort, reviews the current state of global urban remote sensing, and expands on future directions in the field. The book reviews the current state of global urban monitoring, assessment, modeling, and prediction through Earth observation and related technologies. It then introduces GEO’s important international collaborative effort—Global Urban Observation and Information Task—and the current state of global urban remote sensing and future directions. It explores groundbreaking work in urban remote sensing and examines how it could contribute to the development of innovative concepts and techniques for sustainable urban development. Despite significant progress in recent years, there remain substantial gaps in ongoing national, regional, and global efforts to address environmental challenges. Edited by a well-known expert in the field of remote sensing, GIS, and other geospatial technologies, this book addresses the gaps in an effective and long-term manner, highlighting the importance of increased coordination and networking among major stakeholders and of working together with other key international mechanisms. Drawing on the expertise of pioneers in the field from across the globe, the book details emerging research in the theory, methods, and techniques of urban remote sensing that provide insight into how to solve the major issues of sustainable development—one of the most important issues facing society in the future.
Computational Science And Its Applications Iccsa 2024 Workshops
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Author : Osvaldo Gervasi
language : en
Publisher: Springer Nature
Release Date : 2024-07-24
Computational Science And Its Applications Iccsa 2024 Workshops written by Osvaldo Gervasi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-07-24 with Computers categories.
This eleven-volume set LNCS 14815 – 14825 constitutes the refereed workshop proceedings of the 24th International Conference on Computational Science and Its Applications, ICCSA 2024, held at Hanoi, Vietnam, during July 1–4, 2024. The 281 full papers, 17 short papers and 2 PHD showcase papers included in this volume were carefully reviewed and selected from a total of 450 submissions. In addition, the conference consisted of 55 workshops, focusing on very topical issues of importance to science, technology and society: from new mathematical approaches for solving complex computational systems, to information and knowledge in the Internet of Things, new statistical and optimization methods, several Artificial Intelligence approaches, sustainability issues, smart cities and related technologies.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1999
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aeronautics categories.
Monitoring And Predicting Agricultural Drought
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Author : Vijendra K. Boken
language : en
Publisher: Oxford University Press
Release Date : 2005-04-14
Monitoring And Predicting Agricultural Drought written by Vijendra K. Boken and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-04-14 with Nature categories.
Agricultural droughts affect whole societies, leading to higher food costs, threatened economies, and even famine. In order to mitigate such effects, researchers must first be able to monitor them, and then predict them; however no book currently focuses on accurate monitoring or prediction of these devastating kinds of droughts. To fill this void, the editors of Monitoring and Predicting Agricultural Drought have assembled a team of expert contributors from all continents to make a global study, describing biometeorological models and monitoring methods for agricultural droughts. These models and methods note the relationships between precipitation, soil moisture, and crop yields, using data gathered from conventional and remote sensing techniques. The coverage of the book includes probabilistic models and techniques used in America, Europe and the former USSR, Africa, Asia, and Australia, and it concludes with coverage of climate change and resultant shifts in agricultural productivity, drought early warning systems, and famine mitigation. This will be an essential collection for those who must advise governments or international organizations on the current scope, likelihood, and impact of agricultural droughts. Sponsored by the World Meterological Organization
Second International Workshop On Retrieval Of Bio Geo Physical Parameters From Sar Data For Land Applications
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Author : Maurice Borgeaud
language : en
Publisher:
Release Date : 1998
Second International Workshop On Retrieval Of Bio Geo Physical Parameters From Sar Data For Land Applications written by Maurice Borgeaud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Earth sciences categories.
Sustainable Development Perspectives In Earth Observation
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Author : Mukunda Behera
language : en
Publisher: Elsevier
Release Date : 2025-02-03
Sustainable Development Perspectives In Earth Observation written by Mukunda Behera and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-02-03 with Science categories.
Earth Observation: Sustainable Development Perspectives offers expert insight to the latest progress made in terrestrial, oceanic, and atmospheric processes, and their inter-linkage in the face of changing climate using earth observation. Reviewing contemporary research, this volume will address various challenges faced in agricultural research and education, crop production forecasting, agroforestry, floriculture, horticulture, crop insurance and marine resources utilization for sustainable development in the warming world. The editors examine the advances made in understanding the changing dynamics of various ecosystems such as land use, water resources, ecosystem productivity and biodiversity. The book addresses ocean-atmosphere interactions, modes of climate variations such as, El Nino and Indian Ocean dipole, extreme events, tropical cyclone, summer monsoon and distribution of organic matter and interlinks among various ocean-atmosphere phenomena. The use of advanced data sets, measurements techniques, modeling and analytics protocols, analyses methods and interpretations are also discussed. For those working towards sustainability using earth observation, this text is a valuable resource for understanding the changing dynamics of the environment in the face of climate change. - Analyzes various challenges faced in agricultural research and education, crop production forecasting, agroforestry, vegetation phenology, forest cover resilience, high altitude wetlands, aerosols, greenhouse gases and coastal management - Explores ocean–atmosphere interactions, modes of climate variations, such as El Nino and Indian Ocean Dipole, extreme events, tropical cyclone, summer monsoon, and distribution of organic matter and their interlinks among various ocean–atmosphere phenomena - Examines various biogeophysical processes using Earth observation for better climate mitigation and adaptation
Digest
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Author :
language : en
Publisher:
Release Date : 2005
Digest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Earth sciences categories.
Earth Resources
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Author :
language : en
Publisher:
Release Date : 1983
Earth Resources written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Astronautics in earth sciences categories.
Microwave Radar And Radiometric Remote Sensing
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Author : Fawwaz Tayssir Ulaby
language : en
Publisher:
Release Date : 2014
Microwave Radar And Radiometric Remote Sensing written by Fawwaz Tayssir Ulaby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Microwave devices categories.
2-10.3 Multiple Reflection Method