Results 11 to 20 of about 651,747 (306)

A SAR Conjugate Mirror [PDF]

open access: yesIEEE Geoscience and Remote Sensing Letters, 2006
A radar transponder was constructed, which modifies the received signal such that its complex conjugate is returned to the radar, qualities of the conjugate mirror used in optics and acoustics. For a monostatic synthetic aperture radar (SAR), a perfect conjugate mirror will reflect a signal back to the radar with no phase shift due to the propagation ...
Hounam, David
openaire   +5 more sources

Deep Learning Meets SAR: Concepts, models, pitfalls, and perspectives [PDF]

open access: yesIEEE Geoscience and Remote Sensing Magazine, 2020
Deep learning in remote sensing has received considerable international hype, but it is mostly limited to the evaluation of optical data. Although deep learning has been introduced in synthetic aperture radar (SAR) data processing, despite successful ...
Xiaoxiang Zhu   +8 more
semanticscholar   +1 more source

Assessing Combinations of Landsat, Sentinel-2 and Sentinel-1 Time series for Detecting Bark Beetle Infestations

open access: yesGIScience & Remote Sensing, 2023
Bark beetle infestations are among the most substantial forest disturbance agents worldwide. Moreover, as a consequence of global climate change, they have increased in frequency and in the size and number of affected areas.
Simon König   +4 more
doaj   +1 more source

SARS and masks [PDF]

open access: yesJournal of Hospital Infection, 2004
Since its emergence in the first months of 2003, the epidemic of severe acute respiratory syndrome (SARS) has been characterized by rapid spread among healthcare workers (HCWs). Uncertainty about the route of transmission of the virus suggests the use of respirators that can protect HCWs against both droplet nuclei and droplet transmission, rather than
Puro Vincenzo   +2 more
openaire   +2 more sources

Estado da Arte do Sensoriamento Remoto por Radar: Fundamentos, Sensores, Processamento de Imagens e Aplicações

open access: yesRevista Brasileira de Cartografia, 2020
Este artigo aborda o estado da arte do sensoriamento remoto por radar e foi elaborado para fazer parte da edição especial de comemoração dos 50 anos desta revista.
Edson Eyji Sano   +2 more
doaj   +1 more source

BiFA-YOLO: A Novel YOLO-Based Method for Arbitrary-Oriented Ship Detection in High-Resolution SAR Images

open access: yesRemote Sensing, 2021
Due to its great application value in the military and civilian fields, ship detection in synthetic aperture radar (SAR) images has always attracted much attention.
Zhong-Zhen Sun   +5 more
semanticscholar   +1 more source

Estimation Method of SAR Doppler Frequency Rate Based on FrFT

open access: yesXibei Gongye Daxue Xuebao, 2020
Due to the problem that the existing Doppler frequency rate estimation method is limited by the estimation accuracy, a novel estimation method of Doppler frequency rate is proposed.

doaj   +1 more source

H/A/α Polarimetric Decomposition Of Dual Polarized Alos Palsar For Efficient Land Feature Detection And Biomass Estimation Over Tropical Deciduous Forest

open access: yesGeography, Environment, Sustainability, 2022
Information regarding land use and land cover is an important for formulating decision making for land information system. The easiest and most effective way to gather such information is via using Earth observation remote sensing satellites supported by
Suman Sinha
doaj   +1 more source

Prediction of SAR and TDS parameters using LSTM- RNN model: A case study on Aran station, Iran [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2021
Surface water quality is of particular importance due to its drinking, industrial, and agricultural water sources. Changes in rainfall, temperature and river discharge can affect surface water quality.
Maryam Hafezparast Mavadat   +1 more
doaj   +1 more source

SARS: epidemiology [PDF]

open access: yesRespirology, 2003
Severe acute respiratory syndrome (SARS) originated in Southern China in November 2002, and was brought to Hong Kong in February 2003. From Hong Kong, the disease spread rapidly worldwide but mostly to Asian countries. At the end of the epidemic in June, the global cumulative total was 8422 cases with 916 deaths (case fatality rate of 11%).
Moira, Chan-Yeung, Rui-Heng, Xu
openaire   +2 more sources

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