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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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Small, programmable, high speed PCM subsystem, supports the variety of signals inherent in sophisticated equipment. A signal generated by a transducer is first conditioned to the proper signal range, then sampled by an external multiplexer or by the subsystem directly and then converted and transmitted to a receiving station.
Pulse Code Modulation /PCM/ telemetry data compression study using S-6 Explorer XVII DATA
Computer program simulating pulse code modulation /PCM/ conversion equipment using Monte Carlo technique in measuring strategy effectiveness of satellite equipment control settings
Digitizer accomplishes both N bit pulse code modulation /PCM/ and delta modulation, and provides modulation indicating variable signal gain and variable sidetone. Other features include - low package count, variable clock rate to optimize bandwidth, and easily expanded PCM output.
Communications requirements for manned deep space missions, using optical links, with PPM, PCM/PL AND coherent reception for each link
Nimbus satellite - pulse-code-modulated telemetry subsytem
Explorer xvii real time pcm telemetry data processing and display test stand
Pulse code modulation data processor of satellite telemetry automatic reduction system - handbook
Pulse code modulation telemetry encoder used in united kingdom satellite-c experiments
Demodulation of noisy, binary, pulse code modulated waveforms - error probability optimization
Digital all-magnetic circuit technique used in pulse code modulation telemetry systems
Network equipment installation at remote sites for Apollo program
Apollo network pulse code modulation decommutation system
Data telemetering to Earth from EGO describing PCM system and special processor for magnetometer data
Unified carrier, range tracking and communications system using phase-locked loop techniques for coherent spacecraft-to-Earth communications
Apollo communications system testing program for component compatibility and performance, illustrating PCM telemetry system
Joint maximum likelihood estimates for signal amplitude and noise power density in coherent pulse code modulation channel with white Gaussian noise and correlation receiver
Redundant low power PCM telemeter for OSO