Results 21 to 30 of about 6,179,327 (244)

The radar signature of the Wind Lens: a less disruptive wind turbine? [PDF]

open access: yes, 2012
We study the radar signature of a new type of wind turbine, named the Wind Lens. This design includes a flanged shroud around the turbine which concentrates the wind flow past the turbine blades and hence improves the efficiency.
H. Griffiths   +9 more
core   +1 more source

A new interpretation of multifrequency/multipolarization radar signatures of the Gulf Stream front

open access: yes, 1999
Radar signatures which are observed on SIR-C/X-SAR multifrequency/multipolarization synthetic aperture radar images of the Gulf Stream off the U.S. east coast are compared with results of simulations with a numerical radar imaging model. Based on in situ
Ufermann, S., Romeiser, R.
core   +2 more sources

Monostatic radar cross section of flying wing delta planforms

open access: yesEngineering Science and Technology, an International Journal, 2017
The design of the flying wing and its variants shapes continues to have a profound influence in the design of the current and future use of military aircraft.
Sevoor Meenakshisundaram Vaitheeswaran   +3 more
doaj   +1 more source

Simulation of the Radar Cross Section of a Noctuid Moth

open access: yesRemote Sensing, 2022
Electromagnetic modelling may be used as a tool for understanding the radar cross section (RCS) of volant animals. Here, we examine this emerging method in detail and delve deeper into the specifics of the modelling process for a single noctuid moth ...
Freya I. Addison   +6 more
doaj   +1 more source

A simulation of the single scan accuracy of a two-dimensional pulsed surveillance radar [PDF]

open access: yes, 1991
Bibliography: leaves 194-198.The following dissertation considers the single-scan two-dimensional positional accuracy of a pulsed surveillance radar. The theoretical aspects to the positional accuracy are considered and a generalized analytical approach ...
Bras, Johan J
core   +1 more source

Numerical study on signatures of atmospheric convective cells in radar images of the ocean

open access: yes, 1999
Current and wind variations at the ocean surface can give rise to a modulation of the sea surface roughness and thus become visible in radar images. The discrimination between radar signatures of oceanic and atmospheric phenomena can be quite difficult ...
Susanne Ufermann   +5 more
core   +2 more sources

Comparative analysis of airborne targets radar cross-section corner and lens simulators advantages and disadvantages

open access: yesНаука і техніка Повітряних Сил Збройних Сил України
One of the main elements of modern and promising Unmanned Aircraft System – Target equipment is the various types of means of radar cross-section simulation in ultra-high frequency electromagnetic waves.
Г. В. Іванець   +4 more
doaj   +1 more source

Bistatic High Frequency Radar Ocean Surface Cross Section for an FMCW Source with an Antenna on a Floating Platform

open access: yesInternational Journal of Antennas and Propagation, 2016
The first- and second-order bistatic high frequency radar cross sections of the ocean surface with an antenna on a floating platform are derived for a frequency-modulated continuous wave (FMCW) source.
Yue Ma, Weimin Huang, Eric W. Gill
doaj   +1 more source

Multiwall carbon nanotube enhance the invisibility effect from radar

open access: yesResults in Physics, 2020
The shape and size do not always give us the desired result of low cross-section on the radar of observable specifications. Nowadays, to improve lower radar cross-section, most of the country is using radar-absorbing materials, in addition to the shape ...
Niranjan Kumar, Srest Somay
doaj   +1 more source

Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials [PDF]

open access: yesRadioengineering, 2016
To reduce the radar cross section of a waveguide slot antenna, a three-layer metamaterial is presented based on orthogonal double split-ring resonators. The absorption characteristics of three-layer metamaterial are demonstrated by simulation.
Qiang Fu   +4 more
doaj  

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