SEARCH · Engineering Papers
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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Video remodulation unit enhances facsimile transmission using an amplitude-modulated 2400 Hz carrier. The unit demodulates the signal and then remodulates it, using the same carrier. By using the unit controls, modulation can be set to levels that compensate for picture in-transit degradation.
Mathematical model for Apollo video signal processing in low signal to noise ratio environments
Photographic plates for video data modulation study
Spaceborne pattern recognition system for identifying and classifying objects in video data
Video recorder/reproducer for space explorations with dual discrete operating speeds
Roentgen video densitometer study of mitral valve closure during fibrilation, discussing atrial contraction role on ventricular function in normal and failing heart
System for enhancement, storage and retrieval of video and photographic data
Computer analysis of density measurements of particle tracks in nuclear emulsions by use of digitized video scan
Ultraviolet video imaging system, spectral distribution of UV stimulated luminescence, and measurement of UV reflectance
Video monitor oscilloscope for pulse position modulation telemetry
Satellite digital video data analyzed by two dimensional filter computer technique, discussing biomedical applications
Adaptive compression system for predicting and encoding video data for transmission in noiseless channel
Density measurements of particle tracks in nuclear emulsions utilizing digitized video scan, discussing operation and instrumentation
Photometric reduction of Lunar Orbiter video magnetic tapes for generation of topographic information of proposed Apollo landing sites
Microwave radiometric receiver, analyzing video detector saturation effects on linearity
Video signal processing in low signal to noise environments
Monitoring circuit design for sampling circuit control and reduction of time-bandwidth in video communication systems