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The frequency selective surface (FSS) is designed to improve the wide-band stealth performance of radar absorbing materials (RAM) at the frequency range from 2GHz to 12GHz. The FSS element structure is designed for thin RAM coating, and the electromagnetic wave reflectivity performance of RAM containing FSS is analyzed by using the numerical simulation. The influence of FSS design parameters on the...
Virtual Reality-based simulators is an important tool for surgical skills training and assessment. In general, the degree of realism experienced by the trainees is determined by the visual and biomechanical fidelity of the simulator. Organ textures can greatly affect visual realism and hence the overall quality of the simulation. In this paper, we use a very simple algorithm that can efficiently synthesize...
In order to meet the needs of recognizing the targets under the moving space background by micro spacecraft target detector (MTD). According to the particular characters of the spatial background, this paper proposes an algorithm which combines the image centroid registration with the single difference method, named the Centroid Registration Difference Algorithm. In this algorithm, we labeled only...
In multipath environments, cyclic MUSIC is failed to detect all incident sources. In order to de-correlate the coherent signals, spatial smoothing (SS) and forward/backward SS techniques have been investigated to resolve this situation, however, all these algorithms will reduce the number of detectable signals and cause the deficiency of array aperture. In this paper, two new approaches called virtual...
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