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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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Antenna array experiment to determine propagation path limitations on multiple aperture radio antennas
Large-aperture antenna arrays - experimental program for evaluating operational limitations and capabilities
Comparison of two floating aperture data compression schemes
Large aperture telescope for use as coherent optical deep space communications receiver
Signal phase acquisition techniques for arrays of large aperture steerable antennas discussing SNR ROLE
Electronic means of performing the equivalent of automatic aperture control has been devised for the new class of television cameras that incorporates a solid state imaging device in the form of phototransistor mosaic sensors.
Fourier transforms for aperture admittance of ground-plane-mounted waveguide illuminating conducting sheet
Annular aperture diffracted energy distribution for extended source
Reflection coefficient and admittance of circular aperture in ground plane covered by dielectric or plasma slab
Evaluation of adaptively phased large aperture array at very high frequencies
Elliptical mask for transducer aperture to shape far field ultrasonic beam pattern
Large aperture in-space antennas radiation pattern measurement from large launch vehicles and Apollo program
Reflection coefficient of parallel plate waveguide apertures for TEM and TE modes by wedge diffraction analysis
Radar astronomy aperture synthesis technique for applying fading radar return signals to lunar and planetary mapping problems
Circular waveguide aperture input admittance covered by dielectric coating derived from integral transforms and compared with measurements
Input admittance of waveguide-fed rectangular aperture under flowing and stationary inhomogeneous plasmas, noting dependence on various plasma properties
Thermal and structural modeling for large aperture space telescope
Admittance of parallel plate aperture illuminating displaced dielectric-dielectric boundary