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Mitigation Measures for Windfarm Effects on Radar Systems

Omar Abu Ella, Khawla A. Alnajjar, Chen Pengyun
2022 International Journal of Aerospace Engineering  
However, the rotation of wind turbine blades can be detected by radar as a false flight or target.  ...  Windfarms can have a significant impact on radar systems, especially air surveillance radar. This is because it is usually designed to show only moving targets and cancel out stationary objects.  ...  Utilization of Radar Absorbent Material (RAM). Most research work in the field of wind turbine stealth technology has focused on reducing the signature of the turbine's blades on radar system.  ... 
doi:10.1155/2022/1083717 fatcat:simjq6gczjff5kak7bqdj4we74

Dynamic clutter mitigation using sparse optimization

Faruk Uysal, Ivan Selesnick, Unnikrishna Pillai, Braham Himed
2014 IEEE Aerospace and Electronic Systems Magazine  
We used a large customized fan with three blades as a proxy for a wind turbine, as shown in Figure 6 . Its distance to the radar was adjusted appropriately so that it presented a large surface area.  ...  SIGNAL SEPARATION To suppress wind turbine clutter in radar returns, we consider the explicit representation of the radar return as a sum of the two components.  ... 
doi:10.1109/maes.2014.130137 fatcat:6cz3id7jtrbync3d5zu4kdfxqi

SyntEO: Synthetic Data Set Generation for Earth Observation and Deep Learning – Demonstrated for Offshore Wind Farm Detection [article]

Thorsten Hoeser, Claudia Kuenzer
2022 arXiv   pre-print
SyntEO does this by including expert knowledge in the data generation process in a highly structured manner to control the automatic image and label generation by employing an ontology.  ...  The proposed SyntEO approach enables Earth observation researchers to automatically generate large deep learning ready data sets by merging existing and procedural data.  ...  The generator module is a numpy array implementation that uses these parameters to create a stack of 2D kernels to generate each wind turbine's texture.  ... 
arXiv:2112.02829v2 fatcat:4ofbjcl5vffqratienlpfyazsy

A survey of the wind energy resource of Cornwall to examine the influence of settlement patterns and topography on optimum wind turbine size and disposition

Geoffrey J Williams
In determining mean annual site wind speeds at hub height the data from twentysix meteorological stations and the results of over fifty Tala kite ascents were used to calibrate four predictive models for  ...  All the models were found to be inaccurate and a new prediction method with an accuracy of +/— 3^B(A) was developed.  ...  Methods Used To Solve The Problem The plan was to survey an area and to describe every potential wind turbine site within it in terms of its wind speed, its distance to habitation and whether or not it  ... 
doi:10.21954/ fatcat:ugtcywgb7zewtnsednquhfghye

Protocol to develop an environmental impact study of wave energy converters Protocol to develop an environmental impact study of wave energy converters

Juan Bald, Andrea Campo, Javier Franco, Ibon Galparsoro, Manuel González, Pedro Liria, Iñigo Muxika, Anna Rubio, Oihana Solaun, Ainhize Uriarte, María Comesaña, Antón Cacabelos (+14 others)
2010 | Revista de Investigación Marina   unpublished
A smaller nozzle section linking the wave's surface to the turbine's entry guarantees a higher air speed as it comes into the turbine.  ...  In its second article the possibility for wind power installations located in the territorial sea to make use of the special regime of electricity is foreseen.  ...  In this respect, some authors like Lenwood and Anderson (1999) suggest using a risk quotient based upon the concentration of a given pollutant in relation to its concentration regarded as non toxic.  ... 

High efficiency recuperated ceramic gas turbine engines for small unmanned air vehicle propulsion

Michael J. Vick, Andrew Heyes, Richard Foch
For one design, these predict a thermal effectiveness in the 84-87% range at a specific weight of 44 grams per gram/second of airflow, surpassing the current state of the art by a factor of 1.25-1.5.  ...  Next, a new design for a small recuperated ceramic engine is developed and analyzed, in which blade speeds are limited to 270 m/s – about half the typical value.  ...  Balloons use buoyancy to stay up, but the winds control where they fly, and how fast.  ... 
doi:10.25560/10970 fatcat:fdbgeb3jlfcrnbgxfgbqvhs6cu