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Millimeter wave exhibits relatively straight propagation as well as high penetration into dielectric materials, such as plastics, cloth, and paper. In security imaging, we use these features to discover weapons concealed under clothes. Self-organizing map (SOM), a type of neural networks, can map high-dimensional data on any dimension with unsupervised learning. It is utilized for clustering and visualization...
The high precision ranging using ultra wideband (UWB) signals is expected for various applications. However, UWB requires mitigation of narrowband interference (NBI) from other wireless systems. There have been many studies of adaptive notch filters to cope with NBI at various frequencies. This paper proposes a novel NBI mitigation method which utilizes frequency dependence characteristics in array...
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