Zobrazeno 1 - 10
of 968
pro vyhledávání: '"Backscattering coefficient"'
Autor:
Cassandra Normandin, Frédéric Frappart, Nicolas Baghdadi, Luc Bourrel, Santiago Peña Luque, Bertrand Ygorra, Benjamin Kitambo, Fabrice Papa, Serge Riazanoff, Jean-Pierre Wigneron
Publikováno v:
Frontiers in Remote Sensing, Vol 5 (2024)
Rivers play a crucial role in maintaining ecosystems and regional climates, while also providing essential water for irrigation and drinking. With the increasing impacts of climate change and human activities, rivers are becoming more prone to extrem
Externí odkaz:
https://doaj.org/article/88930e74e35e4224843e5e3c50482db8
Autor:
Sushree Panda, Vishram Ram, Pradesh Jena, Jonali Goswami, Dwipendra Thakuria, Francis Dutta, Preetinanda Pati, Shantanu Chainy
Publikováno v:
European Journal of Remote Sensing, Vol 57, Iss 1 (2024)
Accurate and timely mapping of rice areas is crucial for effective agricultural planning and food security management in the North Eastern Hill Region of India, especially amid changing climate conditions. This study developed a method to estimate ri
Externí odkaz:
https://doaj.org/article/e1c6d485376d4673a9ff57e24662584e
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 10006-10012 (2024)
Typhoon Hagibis (No. 19, in Japan) made landfall in Koriyama City in Fukushima Prefecture, Japan, on October 13, 2019. The consequent floods damaged built-up areas in the city center. Furthermore, rice production was affected because the flood occurr
Externí odkaz:
https://doaj.org/article/49511aaa80aa4ab0a7b75a9799277abc
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 3137-3150 (2024)
In this article, we report for the first time two radar measurements (Ji Mo 2008 and Min Qin 2009) on natural soil surfaces under large roughness, which were conducted by the China Research Institute of Radiowave Propagation. The desired HH and VV po
Externí odkaz:
https://doaj.org/article/6d754c26b1e4437cbf01212469affbe2
Publikováno v:
Remote Sensing, Vol 16, Iss 15, p 2704 (2024)
The derivation of the particulate-backscattering coefficient (bbp) from Lidar signals is highly influenced by the parameter χp(π), which is defined by χp(π) = bbp/(2πβp(π)). This parameter facilitates the correlation of the particulate-volume-
Externí odkaz:
https://doaj.org/article/9877268adb9a40ea93439fdc0c2fee42
Publikováno v:
Frontiers in Marine Science, Vol 10 (2024)
The capability to estimate the oceanic particulate organic carbon concentration (POC) from optical measurements is crucial for assessing the dynamics of this carbon reservoir and the capacity of the biological pump to sequester atmospheric carbon dio
Externí odkaz:
https://doaj.org/article/3faecec2f7d548648ab43f5b2c4644ea
Publikováno v:
Ecological Indicators, Vol 157, Iss , Pp 111246- (2023)
Wetland vegetation is the basis for wetland ecosystems to regulate climate change, carbon sequestration and maintain biodiversity. Therefore, high-precision mapping and dynamic monitoring of wetland vegetation are essential for the effective manageme
Externí odkaz:
https://doaj.org/article/def8a802c0724a3f9ef6a77e076b1abe
Autor:
Yubin Song, Xuelian Xun, Hongwei Zheng, Xi Chen, Anming Bao, Ying Liu, Geping Luo, Jiaqiang Lei, Wenqiang Xu, Tie Liu, Olaf Hellwich, Qing Guan
Publikováno v:
Remote Sensing, Vol 16, Iss 10, p 1800 (2024)
The dust originating from the extinct lake of the Aral Sea poses a considerable threat to the surrounding communities and ecosystems. The accurate location of these wind erosion areas is an essential prerequisite for controlling sand and dust activit
Externí odkaz:
https://doaj.org/article/1895c0df62be425faafefafa98b076c9
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
The satellite lidar-derived ocean particulate backscattering coefficient (bbp) has rarely been validated globally with in situ observations, and we need to understand how well the satellite CALIPSO lidar bbp approach performs. Whether lidar bbp perfo
Externí odkaz:
https://doaj.org/article/09a44df0f4914eff87b420256d6cea09
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 2, Pp 146-151 (2022)
A new, simple empirical model for microwave backscattering from vegetation fields at 5.4 GHz is proposed in this paper. First, a modified radiative transfer model (RTM) is used to generate a database of multi-polarized backscattering coefficients of
Externí odkaz:
https://doaj.org/article/3e81a264970d494583effd25080ce0f0