An Engineering Approach to Nonlinear Estimation
Linear analog operation followed by nonlinear digital signal processing for nonlinear parameter approximation
APPROXIMATION METHOD↗
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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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An Empirical Bayes Technique in Communication Theory
Empirical Bayes technique applied in communication problems of random process signal detection
SIGNAL DETECTION↗
Radio waves and circuits
Diffraction and scattering of electromagnetic waves, radio wave propagation in ionized media, radio antennas, and signal processing in communications systems
CIRCUIT↗
A computer simulation of digital recording Final development progress report, 29 Dec. 1966 - 29 Dec. 1967
Fourier series digital computer simulation of tape recording process - signal detection in prescence of white Gaussian noise
Lienhard, L.↗
Surveyor spacecraft system - Surveyor 1 flight performance, volume 2 Final report
Performance analysis of electric power, data link, signal processing, and flight control systems of Surveyor 1 spacecraft
Beall, K. C.↗
Special studies of AROD system concepts and designs
Signal processing techniques for range and range rate measurements in airborne range and orbit determination
Crow, D. B.↗
Special studies of AROD system concepts and designs
Signal processing techniques for airborne range and orbit determination system, and direction finding system analysis
Crow, D. B.↗
Detection, Estimation, and Modulation Theory. Part 1 - Detection, Estimation, and Linear Modulation Theory.
Detection, estimation and linear modulation theory, Part 1, covering random processes, signal detection in noise and continuous waveforms
Van Trees, H. L.↗
A space communications study Status report, 15 Dec. 1968 - 15 Mar. 1969
Harmonic distortion in frequency demodulator using feedback, delta modulation, recursive signal processing techniques, and multipath fading
Clarke, K. K.↗
Imaging of objects viewed through a turbulent atmosphere
Imaging techniques for objects viewed through atmospheric turbulence analyzed by Fourier transform and signal processing
Moldon, J. C.↗
On optimum quantization.
Quantization error reduction for stochastic signals processing problems
Wood, R. C.↗
Suppression of interference in a congested spectrum.
Adaptive signal processing interference rejection technique for suppression of cochannel AM interference in congested VHF tracking receiver
Ferrari, E. J.↗
Electronic strain-level counter
Counter for aircraft counts and records number of times the strain at a point in a structural member exceeds each of four preset levels. Counter uses 28 volt dc power supply, metallic resistance strain gage bridge as sensor, integrated and solid state circuits for signal processing, and electromechanical counters for data storage and readout.
Pitts, F. L.↗
Digital communications techniques Interim report, 15 Sep. 1969 - 15 Feb. 1970
Convolutional codes and recursive signal processing for digital communications
Pickholtz, R. L.↗
A study of the capabilities of the geodetic satellite altimeter to measure ocean-surface characteristics Final engineering report
Signal processing techniques applicable to geodetic satellite altimeter program
Source record↗
The feasibility of the automated visual inspection of microcircuits
Feasibility of automatic visual microcircuit inspection based on optical spatial filtering and electronic signal processing
Curtis, D. A.↗
A comparative analysis of frequency modulation threshold extension techniques
FM threshold extension for system performance improvement, comparing impulse noise elimination, correlation detection and delta modulation signal processing techniques implemented at demodulator output
Arndt, G. D.↗
Dual-channel circuit conditions/amplifies transducers' inputs and outputs
Circuit includes two data channels and one shared precision power supply installed on a single 11.4 cm square circuit card. The unit is relatively inexpensive, compact, and suitable for most tests where low-noise and high-gain signal processing is required.
Murphy, K. M.↗