The principles and applications of multispectral color aerial photography.
Multispectral color aerial photography using broadband spectral filters for detecting and identifying small environmental features of earth surface
Yost, E.↗
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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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Spectrum of the two-photon emission from the metastable state of singly ionized helium.
Spectral distribution of two photon emission from metastable state of singly ionized He by broadband spectroscopic coincidence counting technique
Artura, C. J.↗
High efficiency optical beamsplitter designed for operation in the infrared region
Beamsplitter system uses potassium bromide as substrate for operating in the spectral region between 5 and 30 microns and calcium fluoride for narrowband applications. It uses a 13-layer film which yields nearly equal broadband infrared reflectance and transmittance.
Bastien, R. C.↗
Improved modified turnstile antenna
Improved antenna design embodies the principles of turnstiling, broadbanding, and delta dipole matching. Antenna is useful in commercial broadcast applications.
Lemson, P. H.↗
Nonducted VLF propagation in the magnetosphere
Nonducted very low frequency propagation in magnetosphere from broadband VLF receivers on OGO 2 and OGO 4 polar satellites
Walter, F.↗
Attenuation of sound in soft-walled circular ducts
Broadband sound attenuation in soft walled /low acoustic impedance/ circular ducts found dependent on frequency
Rice, E. J.↗
Low-frequency noise observed in the distant magnetosphere with OGO 1
Broadband and highpass LF noise in distant magnetosphere detected by VLF/LF experiment on OGO 1 satellite
Dunckel, N.↗
Fast time-resolved spectra of electrostatic turbulence in the earth's bow shock
Fast time-resolved spectra of earth bow shock electrostatic turbulence based on broadband analog electric data from OGO-5
Coroniti, F. V.↗
Pioneer 8 electric field measurements in the distant geomagnetic tail
Pioneer 8 wave and particle observations correlation showing broadband wave levels reduction during extended geomagnetic tail crossings
Green, I. M.↗
An efficient, broad-band, switching-mode amplifier with isolated output, part 2 Annual report
Breadboard model of broadband pulse width modulated amplifier
Dunmyer, W. D.↗
The response of cylindrical shells to random acoustic excitation over broad frequency ranges
Closed cylindrical shell response to randomly time distributed broadband acoustic excitations, using statistical energy method to compute displacement and interior pressure
Bessey, R. L.↗
Observations of auroral hiss, LHR noise, and other phenomena in the frequency range 20 Hz-540 kHz on OGO 6
Ionospheric electric and electromagnetic waves broadband characteristics, investigating auroral hiss and LHR noise
Johnson, W. C.↗
Multispectral color for agriculture and forestry
Multispectral color aerial photography for identification of farm crops and tree species, using broadband camera filters
Wenderoth, S.↗
Magnetism in white dwarfs
White dwarf stars broadband circular polarization and normal/quadratic Zeeman effect
Angel, J. R. P.↗
Television multiplexing system
TV multiplexing and broadband multichannel real time telemetry data transmission without loss between Kennedy Space Center and ground station for computer operation
Bruckner, B. G.↗
Low phase-shift amplifier
Single-stage MOSFET amplifier is described which is identical to standard neutralized amplifier except that neutralization provided by broadband transformer is applied to AGC gate instead of signal gate. Neutralization of drain-to-control gate capacity minimizes the phase change induced by variation in AGC.
Lutes, G. F.↗
Projections of scan patterns on human retina
Fundus camera tracks eye movements by using camera optics with the aid of an inverted system. Camera provides a flying-spot circular scanning light source in the normal film plane and a broadband photodetector in position normally occupied by light source.
Kelly, D. H.↗