Results 11 to 20 of about 6,648 (171)
Corollaries of Point Spread Function with Asymmetric Apodization [PDF]
International Journal of Optics, 2016 Primary energy based corollaries of point spread function with asymmetric apodization using complex pupil function have been studied in the case of three-zone aperture.
Naresh Kumar Reddy Andra +2 more
doaj +2 more sources
Ultrasound nondestructive evaluation (NDE) imaging with transducer arrays and adaptive processing [PDF]
, 2011 This paper addresses the challenging problem of ultrasonic non-destructive evaluation (NDE) imaging with adaptive transducer arrays. In NDE applications, most materials like concrete, stainless steel and carbon-reinforced composites used extensively in ...
Hayward, G. +3 more
core +4 more sources
Three New Calcium Formate Reference Materials for δ<sup>13</sup>C Measurements and a Redetermination of the R(<sup>13</sup>C/<sup>12</sup>C) Ratio for VPDB Based on Proton Nuclear Magnetic Resonance Measurements. [PDF]
Rapid Commun Mass SpectromABSTRACT Rationale Isotope ratio mass spectrometry (IRMS) and proton nuclear magnetic resonance (1H NMR) spectroscopy are independent techniques for determining the isotope ratio R(13C/12C) in organic compounds. However, the lack of suitable reference materials has limited intercalibration of results from these methods.
Hoffman DW +5 more
europepmc +2 more sources
Optimization of apodization functions in terahertz transient spectrometry
, 2007 A quadratic programming optimization procedure for designing asymmetric apodization windows tailored to the shape of time-domain sample waveforms recorded using a terahertz transient spectrometer is proposed.
Zafiropoulos, A. +5 more
core +9 more sources
Basic FBG apodization functions effects on the filtered optical acoustic signal [PDF]
, 2021 This article clarified the basic fiber bragg grating (FBG) apodization functions effects on the filtered optical acoustic signal (AS). Max optical acoustic power variations after acousto optic filter is clarified with the spectral wavelength variations ...
Eid, Mahmoud M. A. +1 more
core +1 more source
Photonics, 2023 We present the results of improving resolution in the imaging of two closely spaced point sources with an optical system under the influence of apodization and different types of aberrations. In particular, we consider the effect of coma and astigmatism,
Andra Naresh Kumar Reddy +3 more
doaj +1 more source
Remote Sensing, 2023 This paper provides a procedure for the simulation of radiances from the U. S. National Oceanic and Atmospheric Administration (NOAA) Cross-track Infrared Sounder (CrIS) Fourier Transform Spectrometer to include spectral ringing effects caused by the ...
Lori Borg +7 more
doaj +1 more source
Apodization sensor performance for TOPAS fiber Bragg grating [PDF]
, 2021 Optical sensors have more capabilities than electronic sensors, and therefore provide extraordinary developments, including high sensitivity, non-susceptibility to electromagnetic wave disturbances, small size, and multiplexing.
Syahputra, Romi Fadli; Universitas Riau +5 more
core +1 more source
Row-Column Addressed 2-D CMUT Arrays with Integrated Apodization [PDF]
, 2014 Experimental results from row-column addressed capacitive micromachined ultrasonic transducers (CMUTs) with integrated apodization are presented. The apodization is applied by varying the density of CMUT cells in the array with the objective of damping ...
Jorgen Arendt Jensen +7 more
core +1 more source
Applied Sciences, 2019 (1) Background: Multi-line transmit (MLT) beamforming has been proposed for fast cardiac ultrasound imaging. While crosstalk between MLT beams could induce artifacts, a Tukey (α = 0.5)-Tukey (α = 0.5) transmit-receive (TT-) apodization can ...
Ling Tong +6 more
doaj +1 more source