Interferometric spectra of planets.
Planetary spectra using Fourier transform spectroscopy, determining solar spectrum, Venus atmosphere carbon dioxide band and spectra of Mars and Jupiter
Connes, J.↗
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Results for “Fourier Transform”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The potential calculation
Error analysis for calculation of potential on uniform rectangular mesh using Poisson equation and Fourier transformation
Hockney, R. W.↗
Imaging of objects viewed through a turbulent atmosphere
Imaging techniques for objects viewed through atmospheric turbulence analyzed by Fourier transform and signal processing
Moldon, J. C.↗
X-ray imaging with multiple-pinhole cameras using a posteriori holographic image synthesis.
Extended source Fourier transform holography for single image synthesis of multiple identical images produced by multiple pinhole camera in X ray astronomy
Hayat, G. S.↗
Carroll's method applied to small stellar rotations.
Carroll Fourier transform method applied to stellar spectra lines to determine small rotational velocities
Wilson, A.↗
Stellar spectrum classifier
Stellar classification is accomplished by correlating holograms of classified spectra with the Fourier transform of the spectral images to be classified.
Reid, J. H.↗
Holographic photography of high velocity particles
Fourier transform hologram camera increases the velocity range for holography by a factor of 10 to 1000. Two different optical systems, using a triangular arrangement of beam splitters and a mirror to illuminate the object from two directions, are investigated.
Dyes, W. A.↗
Spectral analysis of detailed vertical wind speed profiles
Cape Kennedy vertical wind speed profiles measured by spectral analysis using fast Fourier transform method
Endlich, R. M.↗
Optical restoration of images blurred by atmospheric turbulence using optimum filter theory
Photographic film imagery, degraded by long term artificial atmospheric turbulence, restored by spatial filters placed in Fourier transform plane
Horner, J. L.↗
Laser-light spatial-domain scanning deconvolution of blurred photographs using the general holographic deblurring filter
Laser-light spatial-domain scanning function for deconvolution of blurred photographs using point-spread and holographic Fourier transform division filter
Halioua, M.↗
Spatial-domain laser-light scanning deconvolution of blurred photographs using the general holographic deblurring filter
Spatial domain deconvolution by laser scanning of blurred photographs, using holographic Fourier transform division filter and photoelectric integration
Halioua, H.↗
Automatic interpretation and classification of images by use of the Fourier domain
Automatic image interpretation and classification using two dimensional digital Fourier transforms
Andrews, H. C.↗
Impedance of arbitrarily oriented cylindrical and helical antennas in magnetoplasma
Cylindrical and helical antennas impedance in cold magnetoplasma, using three dimensional integral involving Fourier transform and Green function
Weil, H.↗
Infrared spectra for 32 stars
Stellar IR spectra for types A0 to M7, using Mertz type Michelson interferometer as Fourier transform spectrometer
Johnson, H. L.↗
Multispectral infrared imaging interferometer
Device permitting simultaneous viewing of infrared images at different wavelengths consists of imaging lens, Michelson interferometer, array of infrared detectors, data processing equipment for Fourier transformation of detector signal, and image display unit. Invention is useful in earth resources applications, nondestructive testing, and medical diagnoses.
Potter, A. E., Jr.↗
A frequency domain solution for the linear attitude-control problem of spacecraft with flexible appendages
Linear interaction problem between spacecraft attitude control and flexible appendages solved in frequency domain using Fourier transform
Trubert, M. R.↗
Spectral-averaging error reduction in low-resolution spectroradiometry
Fourier transformation compensation for spectral averaging error reduction in low resolution spectroradiometry
Buchele, D. R.↗
The responses of balloon and falling sphere wind sensors in turbulent flows
Responses of balloon and falling sphere wind sensors in atmospheric turbulence, analyzed with Fourier transformation
Fichtl, G. H.↗