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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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Variation of coherent correlation receiver performance characteristics caused by transmitted signal corrupted by Rician fading phenomena and additive Gaussian noise
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Portable seismometer mounted in a rugged housing can be placed in inaccessible locations and operate efficiently in other than a vertically upright position. The instrument housing contains an amplifier, transmitter, and antenna to relay measurement data to a receiving station.
System to locate objects submerged underwater uses active/passive sonar techniques in which a transmitter is attached to the object to be recovered and a receiver is used for search. The system is rugged, has a long term operating life, and furnishes a precise bearing on the object.
Digital measurement of differential time delay of pseudorandom coded signals
Approximation solution to integral expressions of radar backscatter from distant rough surfaces for lunar surface property determination
Photometric device for measuring propagation velocity of light fluctuations in arc-heated plasma jet
Digital simulation of tropospheric scatter communication channel
Monte Carlo method of analyzing gamma radiation and fast neutron spectrometer characteristics
Analytical model for describing combustion chamber disturbances during start transient and steady state operations of hypergolic liquid rocket engines
1/s line intensity distribution function for molecular spectra representation using growth curves calculated for Lorentz lines
Perturbation factors in angular correlation function for multidomain ferromagnetic materials determined taking into account magnetic field fluctuations
Physical and chemical conditions in rocket combustion chamber during starting transients and steady operation described by mathematical model intended for parametric studies
Wave propagation in anisotropic plasma in presence of electron density irregularities, noting Faraday effect
Methods for generating pseudorandom numbers from nonuniform statistical distributions
Mathematical model for mass spectra of protostars and interstellar clouds
Pseudorandom number generation within digital computers