Lunar communications.
Earth to Moon and lunar surface-to-surface communications using lunar satellites and FM and SSB modulation techniques
LUNAR COMMUNICATION↗
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Results for “FREQUENCY MODULATION”
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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FM telemetry and free-flight techniques for aerodynamic measurements in conventional wind tunnels
Frequency modulated system to measure surface pressures on free flight models in conventional wind tunnels
WIND TUNNEL↗
Comparison of performance of PCM and PFM TELEMETRY systems
Comparison of performance of pulse frequency modulation and pulse code modulation telemetry systems
PFM TELEMETRY↗
IMP D&E /AIMP/ PFM encoding system interface document
Digital data processor, circuit design and fabrication, digital word readout, and interfaces for IMP D and IMP E pulse frequency modulation encoding system
IMP↗
A study of geographical distribution of geomagnetic micropulsations Final report
Geographical distributions of geomagnetic micropulsations continuously recorded on frequency modulated magnetic tape
GEOMAGNETIC MICROPULSATION↗
Deep space FM system, a concept
Deep space frequency modulation system permits transmission of data where the signal deviation is greater than 1/2 the predetection bandwidth. It provides satisfactory performance at great distances or with low signal levels.
Doland, G. D.↗
Evaluation of CSE modem for aircraft terminal multiple access to communications/navigational satellites Final report
Development of experimental linear swept frequency modulator for aircraft satellite communications
Source record↗
Waveform distortion in a maximum-likelihood Darlington detector for M-ary PFM signals
Waveform distortion in maximum likelihood Darlington detector for M-ary pulse frequency modulation signals
Heffernan, P. J.↗
Dual detection system for AIMP PFM data processing
Dual detection system for processing AIMP satellite pulse frequency modulated telemetry data
Karras, T. J.↗
Saturn telemetry data compressor test program Final report
Saturn pulse frequency modulation telemetry data processed through predictor data compressor
Labmeier, C. D.↗
An analysis of the effect of a particular class of PFM on noise inputs
Statistical analysis of pulse frequency modulation systems with white noise input
Chon, Y. T.↗
A hybrid cross-correlation data processing system.
Hybrid cross correlation telemetry data processing system design for decoding pulse frequency modulation
Hammond, W. E.↗
AM baseband telemetry systems. Volume 1 - Factors affecting a common pilot system
Coherent demodulation in single and double side bands with frequency modulation telemetry systems
Simpson, R. S.↗
Boost regulator design and development
Design criteria for pulse and frequency modulated boost regulator
Mc Lyman, W. T.↗
Predicted and actual spacecraft radio frequency interference for PFM telemetry
Predicted and actual spacecraft radio frequency interference for pulse frequency modulation telemetry
Karras, T. J.↗
Threshhold analysis of phase locked loops
Computer technique for predicting threshold in phased locked loops with and without frequency modulation
Osborne, P. W.↗
Advanced study of video signal processing in low signal to noise environments Quarterly progress report, Jun. - Sep. 1969
Probabilistic mathematical click model for optimal click suppressing frequency modulated noise thresholds
Carden, F.↗
Feasibility model of an advanced crossed-field amplifier for space communication systems
Feasibility model of cross field amplifier for use in amplitude or frequency modulation transmitters
Bernstein, G.↗