Zobrazeno 1 - 10
of 1 085
pro vyhledávání: '"Radar backscatter"'
Publikováno v:
Emerging Science Journal, Vol 8, Iss 2, Pp 480-495 (2024)
The rapid development of aircraft and unmanned aerial vehicles (UAV) increases their use, including in polar areas, which are characterized by their remoteness and rather harsh conditions. The dominant trends in airborne radar development are expandi
Externí odkaz:
https://doaj.org/article/d60dc0122a18409ea5eb5379317f4090
Autor:
Kaiser Niknam, Jasmeet Judge, A. Kaleo Roberts, Alejandro Monsivais-Huertero, Robert C. Moore, Kamal Sarabandi, Jiayi Wu
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 13089-13107 (2024)
Microwave remote sensing offers a powerful tool for monitoring the growth of short, dense vegetation such as soybeans. As the plants mature, changes in their biomass and 3-D structure impact the electromagnetic (EM) backscatter signal. This backscatt
Externí odkaz:
https://doaj.org/article/212c5d19ff924bf9ba562a289a231772
Autor:
José Milton Neves de Souza Júnior, Luís Felipe Ferreira de Mendonça, Heverton da Silva Costa, Juliana Costi, Rodrigo Nogueira Vasconcelos, André Telles da Cunha Lima, Sidnei João Siqueira Sant’anna, José Marques Lopes, Milton José Porsani, de José Vivas Garica Miranda, Carlos Alessandre Domingos Lentini
Publikováno v:
European Journal of Remote Sensing, Vol 56, Iss 1 (2023)
ABSTRACT The oil spill is one of the most impactful sources of marine pollution on the ocean surface, detected by the SAR sensors as dark areas, regions with low backscatter values. Due to the complex mixture of hydrophobic hydrocarbons, mineral oil
Externí odkaz:
https://doaj.org/article/7a7b52b75c334c75a0ad0dec6be97119
Publikováno v:
Journal of Agrometeorology, Vol 25, Iss 4 (2023)
Surface soil moisture has vital role in water energy balance, climate change and agriculture mainly for crop water requirements and irrigation scheduling. Microwave remote sensing with its unique characteristics of high penetration and sensitivity to
Externí odkaz:
https://doaj.org/article/30f01dd0076146f8a6c0e5bf1f30d486
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 21, Pp n/a-n/a (2023)
Abstract Measuring the radar backscatter characteristics of glacier ice at different frequencies and incidence angles is fundamental to predicting the glacier mapping performance of a sensor. However, such measurements at 94 GHz do not exist. To addr
Externí odkaz:
https://doaj.org/article/896d6b5e71434b9f9ae44065c295f0a4
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 1403-1413 (2023)
Surface soil organic carbon (SOC) content is among the first-order controls on the rate and extent of Arctic permafrost thaw. There is a large discrepancy in current SOC estimates in Arctic tundra, where sparse measurements are unable to capture SOC
Externí odkaz:
https://doaj.org/article/2463f119ea084e5589971dab352e3d66
Monitoring Diesel Spills in Freezing Seawater under Windy Conditions Using C-Band Polarimetric Radar
Autor:
Mahdi Zabihi Mayvan, Elvis Asihene, Durell Desmond, Leah Hicks, Katarzyna Polcwiartek, Gary A. Stern, Dustin Isleifson
Publikováno v:
Remote Sensing, Vol 16, Iss 2, p 379 (2024)
The risk of oil spills in the Arctic is growing rapidly as anthropogenic activities increase due to climate-driven sea ice loss. Detecting and monitoring fuel spills in the marine environment is imperative for enacting an efficient response to mitiga
Externí odkaz:
https://doaj.org/article/6d111b6dc96d43d6a3e48a7201644509
Autor:
Nikola Rogic, Sylvain J. Charbonnier, Franco Garin, Guy W. Dayhoff II, Eric Gagliano, Mel Rodgers, Charles B. Connor, Sameer Varma, David Shean
Publikováno v:
Remote Sensing, Vol 15, Iss 11, p 2791 (2023)
Mapping volcanic flow deposits can be achieved by considering backscattering characteristics as a metric of surface roughness. In this study, we developed an approach to extract a measure of surface roughness from dual-band airborne Synthetic Apertur
Externí odkaz:
https://doaj.org/article/16540a750d3146eeb2ff75cea9347e84
Publikováno v:
Remote Sensing, Vol 15, Iss 8, p 2191 (2023)
Knowledge of the ocean backscatter at various azimuth angles is critical to the radar detection of the ocean environment. In this study, the modified two-scale model (TSM), which introduces a correction term in the conventional TSM, is improved based
Externí odkaz:
https://doaj.org/article/a52b0e8a6df14edd8319e43e8f880ff7
Publikováno v:
Remote Sensing, Vol 15, Iss 6, p 1613 (2023)
Airborne scatterometer capability depends on not only the device’s technical characteristics but also the scheme used for surface observations. Typically, a rotating-beam scatterometer uses a circular scheme for sampling normalized radar cross-sect
Externí odkaz:
https://doaj.org/article/f4227071fe984f728d9f804fce06e6ed