Estimation of direct and cross power spectral density of discrete data using the fast Fourier transform
Direct and cross power spectral density estimation of discrete data using fast Fourier transform with digital filter solution
Jolly, A. C.↗
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Results for “transformers”
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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Range transformation of activation curves and their application to quantitative charged particle activation analysis
Range transformation of activation curves for metal foils and application to charged particle activation analysis in determining trace elements
Rook, H. L.↗
Fourier transform representation of an ideal lens in coherent optical systems
Fourier transform representation by approximations of ideal lens in coherent optical systems
Grebowsky, G. J.↗
Coordinate transformations used in OGO satellite data analysis
Coordinate transformations for OGO satellite data reduction
Source record↗
Factorization of spectra by discrete Fourier transforms
Discrete Fourier transform factorization of arbitrary spectral density functions
Rino, C. L.↗
Z transform and the use of the digital differential analyzer as a peripheral device to a general purpose computer
Z transform and use of digital differential analyzer as peripheral device to general purpose computer
Nalley, D.↗
An experimental Fourier-transform asymmetrical interferometer for atmospheric radiation measurements
Experimental Fourier transform interferometer spectrometer in asymmetrical mode for atmospheric radiation measurements
Chaney, L. W.↗
Application of the two-dimensional Z- transform in determining the autocorrelation function of the input signal in a linear sampled-data system
Two dimensional Laplace transformation for determining autocorrelation function of input signal in sample data system
Zvonov, S. G.↗
Explicit inverse Fourier transformation of a rational function and a new theorem
Explicit inverse Fourier transformation of rational function with new theorem
Lee, S. Y.↗
Transformation of a potential function under coordinate rotations
Transformation of potential function under coordinate rotations
Levie, S. L., Jr.↗
Design considerations for corona-free high- voltage transformers
Design criteria for eliminating corona in high voltage toroidal transformers
Byers, H. C.↗
Perturbation theory based on Lie transforms and its application to the stability of motion near sun-perturbed earth-moon triangular libration points
Perturbation theory based on Lie transforms and application to motion stability near sun perturbed earth-moon triangular libration points
Kamel, A. A.↗
RTCC requirements for missions F and G - Selenographic-MNBY velocity transformation formulation. Project Apollo
Procedures for use in transforming velocity vectors from selenographic system to mean nearest Besselian year
Flanagan, P. F.↗
An efficient method for Cartesian transformations
Cartesian coordinate transformations by rigid vector rotations
Flanagan, P. F.↗
Transformation of a potential function under coordinate translations
Potential function transformation under coordinate translations
Levie, S. L., Jr.↗
On the equivalence of optimal control problems and the transformation of optimal control problems with compact control regions into Lagrange problems
Equivalence of optimal control problems and transformation of optimal control problems with compact control regions into Lagrange problems
Park, S. K.↗