The article explores methods for detecting and tracking air targets in radar with an artificially reduced cross-section (RCS). A technique control the antenna system using adaptive method is presented, which based on adapting to conditions of information uncertainty due fluctuations excitation signal target's radar-absorbing coating. Known aircraft (active passive, do not take into account stru...

Abstract The Sound absorbent textile materials, especially nonwoven composite structure of reclaimed materials which have low manufacturing costs, relative density and are more attractive. In this research the use cotton polyester fiber for production sound absorption has been investigated. Three different blend ratios fibers that is 25:75, 40:60 50:50 used. composites specified their physical ...

Abstract Multilayer gradient absorbing materials are difficult to be modeled and simulated in practical applications. To solve this problem, a method of the inversion equivalent electromagnetic parameters multilayer based on annealing algorithm is proposed paper. The reflectivity material different forms polarization obliquely incident at angles calculated, then used calculate incidence angle s...

Cobalt ferrite nanoparticles (CoFe2O4) are well known for some distinctive characteristics such as high magnetic permeability and coercive force, good saturation magnetization, excellent physical, and chemical stability, which make them so attractive for magnetic storage, magnetic resonance imaging (MRI), drug delivery, optical-magnetic equipment, radar absorbing materials...

The versatility of the three-dimensional (3–D) finitedifference time-domain (FDTD) method to model arbitrarily inhomogeneous geometries is exploited to simulate realistic groundpenetrating radar (GPR) scenarios for the purpose of assisting the subsequent designs of high-performance GPR hardware and software. The buried targets are modeled by conducting and dielectric prisms and disks. The groun...

Neutron reflectometry is a powerful tool used for studies of surfaces and interfaces. The absorption in the typical studied materials is neglected and this technique is limited only to the reflectivity measurement. For strongly absorbing nuclei, the absorption can be directly measured by using the neutron-induced fluorescence technique which exploits the prompt particle emission of absorbing is...