Results 91 to 100 of about 6,648 (171)
Apodization Method in UWB SAR Imaging
, 2014 Synthetic Aperture Radar (SAR) image processing involves a two dimensional (2-D) Fourier Transform (FT) and the spectrum shape introduces high intensity sidelobes. These sidelobes may severely distort the image.
Akhter, Habiba,
core
Study and Design of Polarization-insensitive Narrow-band Apodized Grating Filters
Guangtongxin yanjiu【Objective】A polarization-insensitive, narrow-band apodized Bragg grating filter based on Silicon-On-Insulator (SOI) is proposed in this paper for the application of integrated optical filters in dense wavelength division multiplexing systems.【Methods ...
LI Tao +7 more
doaj
Bragg gratings: Impact of apodization lobes and design of a dispersionless optical filter
, 2006 Several Bragg-grating (BG) filters employing an asymmetrical and multilobe apodization curve, obtained by inverse-problem solving techniques, have been described in literature.
MINZIONI, PAOLO, Tormen Maurizio
core +1 more source
Remote SensingFor two-dimensional forward-looking sonar imaging, high sidelobes significantly degrade the quality of sonar images. The cosine window function weighting method is often applied to suppress the sidelobe levels in the angular and range dimensions, at the ...
Lu Yan +3 more
doaj +1 more source
Al-Qadisiyah Journal for Engineering Science, 2008 Chirped fiber Bragg grating is a promising approach for dispersion compensation in optical fiber communication systems, since it’s passive optical component, fiber compatible and has low insertion losses and low costs.
Muhammed Faleh Hassan
doaj
Spectral recognition with spatially variant apodization [PDF]
, 1997 This paper will investigate the ability of Spatially Variant Apodization to provide a spectrum of a guitar audio signal so that the characteristic tones being played on the guitar can be determined.
Emmerich, Thomas Lee
core
, 2011 We investigate how the apodization applied to interdigital transducers (IDTs) affects the quality factor Q at the antiresonance frequency of surface acoustic wave (SAW) resonators.
Yoshio Satoh +5 more
core +1 more source
Apodization effects in Fourier transform infrared difference spectra
, 1986 Artifacts may occur in Fourier transform infrared (FTIR) spectra due to the apodization of the interferograms of intense bands. Selected examples of boxcar and triangular apodization effects on difference spectra have been previously reported. This paper
Bahder, T.B. +3 more
core +1 more source
Optimum Apodization Profile for Chirped Fiber Bragg Gratings based Chromatic Dispersion Compensator
, 2016 In this paper, we optimize the apodization profile to improve the dispersion compensation performance of the chirped fiber Bragg gratings (CFBGs). Tanh, Exponential, and Hamming apodization profiles were evaluated at 2000 nm wavelength.
Abas, Ahmad Fauzi; Photonics Research Group, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia Wireless and Photonics Research Center, Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia +2 more
core +1 more source
New dispersive IDT (brief note)
Archives of Acoustics, 2014 A new structure of interdigitaI transducer (IDT) of surface acoustic waves is proposed having useful property as concern the overtone frequency response. The proposed transducer utilizes both dispersive aperiodic system of electrodes, and apodization.
E. DANICKI
doaj