Listar por tema "SAR"
Mostrando ítems 1-10 de 10
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Crop classification based on temporal signatures of Sentinel-1 observations over Navarre province, Spain
Crop classification provides relevant information for crop management, food security assurance and agricultural policy design. The availability of Sentinel-1 image time series, with a very short revisit time and high spatial ... -
Electromagnetic assessment of UHF-RFID devices in healthcare environment
In this work, the evaluation of electromagnetic effect of Ultra High Frequency Radio Frequency Identification (UHF-RFID) passive tags used in the healthcare environment is presented. In order to evaluate exposure levels ... -
Error in radar-derived soil moisture due to roughness parameterization: an analysis based on synthetical surface profiles
In the past decades, many studies on soil moisture retrieval from SAR demonstrated a poor correlation between the top layer soil moisture content and observed backscatter coefficients, which mainly has been attributed ... -
Estudio paramétrico de los términos fuente en terapia térmica
El propósito de este proyecto es la comparación teórica de las características del calentamiento del tejido a través de dos técnicas distintas (microondas y ultrasonidos) empleadas en las terapias térmicas mínimamente ... -
Evaluation of soil moisture estimation techniques based on Sentinel-1 observations over wheat fields
Soil moisture (SM) is a key variable in agriculture and its monitoring is essential. SM determines the amount of water available to plants, having a direct impact on the development of crops, on the forecasting of crop ... -
Exploring the potential of the dynamic hysteresis loops via high field, high frequency and temperature adjustable AC magnetometer for magnetic hyperthermia characterization
Aim: The Specific Absorption Rate (SAR) is the key parameter to optimize the effectiveness of magnetic nanoparticles in magnetic hyperthermia. AC magnetometry arises as a powerful technique to quantify the SAR by computing ... -
Hexagonal CORPS-BFN to feed OLAF SAR instrument
The concept of Coherently Radiating Periodic Structures-based Beam Forming Networks is applied to feed OLAF (OverLapped SubArray Fed) antenna for SAR Instrument at L-Band. The proper feeding of this system requires the ... -
Monitorización de cereales de secano mediante observaciones de teledetección radar
Cereals are very important crops worldwide. Their management and cropping techniques could improve if recent innovations in the field of remote sensing (and others) were applied. In the last decades, several space agencies ... -
New methodology for wheat attenuation correction at C-Band VV-polarized backscatter time series
Wheat is one of the most important crops worldwide, and thus the use of remote sensing data for wheat monitoring has attracted much interest. Synthetic Aperture Radar (SAR) observations show that, at C-band and VV polarization, ... -
On the influence of acquisition geometry in backscatter time series over wheat
Dense time series of Sentinel-1 imagery are an invaluable information source for agricultural applications. Multiple orbits can observe a specific area and their combination could improve the temporal resolution of the ...