A timed-shared digital filter realization
Special purpose computer organized as time-shared digital filter for real time applications with adaptable coefficients, programming and multiplexing scheme
Carroll, C. C.↗
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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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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.↗
Aperture filtering and saturation of scintillation
Stellar scintillation saturation at large zenith angles interpreted in terms of combined dispersion and aperture filtering
Young, A. T.↗
Solar spectral irradiance measured from 11.58 km with a Leiss monochromator and a photoelectric filter radiometer
Airborne monochromator and photoelectric filter radiometer for solar spectral irradiance measurements, estimating instrument errors
Duncan, C. H.↗
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.↗
Optimal filter design subject to output sidelobe constraints
Optimal pulse compression time-invariant filter for signal reception with sidelobe constraints under white noise in radar and communications systems
Athans, M.↗
On the realization and computational aspects of the maximum principle least-squares nonlinear filter
Maximum principle least squares /MPLS/ nonlinear filter scheme simplified, using digital simulation for stability and tracking performance
Bejczy, A. K.↗
Signal amplitude quantization in digital filters
Digital filters response errors due to signal amplitude quantization, resulting from analog-to- digital conversion and arithmetic operations
Carroll, C. C.↗
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.↗
Active RC bandpass filter with independent tuning and selectivity controls
Active RC bandpass filter with independent linear control of Q peak gain and frequency
Kerwin, W. J.↗
Nonlinear filtering techniques with application to strapdown computation
Nonlinear filtering methods for attitude computation in strapdown inertial navigation system
Lee, J. S.↗
H alpha photography of the Orion Nebula with a half-angstrom filter
Orion Nebula photographed at H alpha line with half angstrom filter
Fisher, R. R.↗
Small-capacitance nondissipative ripple filters for DC supplies
Ripple filters for DC power supplies using reliable small capacitance capacitors suitable for spacecraft applications
Feng, S. Y. M.↗
A computer aided design system for the design of filters
Filters design by on-line graphic interface computerized synthesis utilizing three screen CRT display
Adkins, A. F.↗
A combination shutter and filter-changing mechanism
Combination shutter and filter-changing mechanism for spacecraft vidicon cameras
Cutts, J. A.↗
Digital filtering of random digits
Digital simulation of linear filter, investigating noise and rounding errors effects on decoding signals from lunar and interplanetary probes
Jennings, G.↗
An active RC band-pass filter for the fluxgate magnetometer
Active RC bandpass filter for space fluxgate magnetometer, using state variable synthesis
Kerwin, W. J.↗
A new tunable filter with a very narrow pass- band
Fabry-Perot interferometer series as tunable optical narrow passband filter with high spectral and angular resolution, discussing performance in solar magnetograph
Kobler, H.↗