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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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Signal detection techniques for discrete- frequency, phase-coherent pulse frequency modulation telemetry system, using analog and digital circuits
Operation and maintenance manual for universal pulse frequency modulation /pfm/ real time data reduction system
Portable transistorized circuit pulse frequency modulation /PFM/ simulator with power supply regulator
Comparison of PCM and PFM telemetry systems in terms of transmission rate, bandwidth, error rate and power
Encoding techniques used in pulse frequency modulation telemetry systems for s-3 and uk-1 satellites
Description of the necessary ground processing equipment for pulse frequency modulated explorer xii signal transmissions to maintain continuous synchronization
Synthesis and mechanization of encoding techniques for use in pulse frequency modulation telemetry system for satellites
Operation & maintenance manual for universal pulse frequency modulation, real time data reduction system
High resolution measurements of PFM telemetry signals with Gaussian noise
Digital data processor pulse frequency modulation sexadecimal-to-decimal converter for use in development of PFM encoders for satellites
Frequency discriminator circuit with output voltage directly proportional to input frequency for rapid sampling of PFM telemetry signals
Pulse frequency modulated systems - definition and analysis
Neuron modeling - simulation of neuronal behavior, model based on Hodgkin and Huxley equations, and simplified model using properties of pulse frequency modulated systems
Error probability in digital computer processing of PFM telemetry data
Feasibility analysis for integration of digital computer with pulse frequency modulation signal reduction and conversion system
Waveform effect of correlator reference voltage on performance of pulse frequency modulation systems
Confidence level of decision based on output of correlators of pulse frequency modulation systems
Signal conditioning for improved high resolution processing of PFM telemetry data