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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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Experimental circuit produces an efficient fractional frequency multiplier that will operate on a 5.6 mw, 2101.8 MHz input signal to achieve an output-to-input frequency ratio of 240/221. Step-recovery diodes used in all frequency-changing stages result in a coherent offset frequency.
Development of coherent fractional frequency multiplier for S-band
Coherent radio emission mechanism in quasars and remains of supernovae
Error probabilities for partially coherent diversity reception, noting linearized receiver performance during random noise output
Highly adaptive phase lock coherent receiving system fulfilling requirements of data and Doppler tracking receivers
Data handling system for 8-bit phase-coherent biorthogonal coded PCM telemeter
Signal to noise ratio analysis at outputs of three coherent phase detectors for radio noise threshold reduction study
Applications of coherent light in areas of spatial filtering and holography
Analytical methods for determining signal errors due to geometric deviations and nonlinearities in coherent optical data processors
Numerical method for calculating Doppler effect of radio waves coherently emitted from satellite
Fourier transform of focussed diffraction pattern to describe coherent optical systems with lenses
Coherent radiation effect on stability of crossed field electron beam
Multiple scattering of coherent optical radiation by nonabsorbing aerosol measured in laboratory
Imagery with coherent laser light improved by pseudorandom coded diffuser
Motor performance of temporal pursuit tracking tasks as function of sequence length and coherence
Performance of ideal quantum receiver of coherent signal of random phase
Ideal quantum receiver to detect coherent narrow band optical signal in presence of thermal background radiation, noting error probability
Coherent MHD waves propagation in presence of plasma density fluctuations, applying perturbation technique to solve stochastic wave equation