Topic
Spatial filter
About: Spatial filter is a research topic. Over the lifetime, 6170 publications have been published within this topic receiving 100451 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the authors presented the Chebyshev pseudo spectral modal curvature formulation for damage detection in beam-like composite structures, which is an extension of authors' former work which is based on the Fourier spectral method.
26 citations
26 citations
26 citations
TL;DR: A spatial filtering technique using layered dielectrics for the reduction of antenna grating lobes or sidelobes is introduced and developed and can be synthesized to have Chebyshev behavior in the spatial domain.
Abstract: A spatial filtering technique using layered dielectrics for the reduction of antenna grating lobes or sidelobes is introduced and developed. The filters are used as a radome at the array face, and can be synthesized to have Chebyshev behavior in the spatial domain. Data are given for the design of two, three, and four layer filters with various spatial passband ranges and ripple levels.
26 citations
Patent•
09 Apr 2007
TL;DR: In this article, a surface emission laser light source is used as a tunable light source to measure the depth of a tomography image by executing the Fourier transform for an output obtained from an interference optical device.
Abstract: A surface emission laser light source is used as a tunable laser light source. Since the surface emission laser light source can realize a broad frequency scanning range at a high speed and in the single mode, a coherent length is longer than that of a multi mode light source. For this reason, when a tomography image is calculated by executing the Fourier transform for an output obtained from an interference optical device, measuring depth can be deepened.
26 citations