Open Access
Spectral studies of signals present in the command and communications system up-link transmitter
J. R. Walsh,R. D. Wetherington +1 more
TLDR
Spectral studies of signals present in command and communications system uplink transmitter of Saturn 5 radio frequency tracking and ranging systems were performed in this article, showing that the signal strength of the uplink signal is positively correlated with the number of contacts.Abstract:
Spectral studies of signals present in command and communications system uplink transmitter of Saturn 5 radio frequency tracking and ranging systemsread more
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Communication system modeling
TL;DR: The results of work on communications systems modeling are presented and a method for approximate modeling of stiff systems using state variable techniques is discussed, characterized by having one or more very fast time constants along with much slower time constants.
Investigation of techniques for improving Saturn 5 RF tracking and ranging systems
J. R. Walsh,R. D. Wetherington +1 more
TL;DR: In this article, the results of theoretical analyses of 12 problems are presented and comparisons of theoretical and experimental results are given, including techniques for improving the Saturn radar altimeter, performance of the phase lock loop of the offset Doppler transponder, signal processing equipment design for an orbital altitude radar return experiment, spectral studies of signals present in the command and communication system (CCS) uplink transmitter, intermodulation in the CCS down-link data demodulators, error rate performance, and flame attenuation effects on telemetry transmissions during Saturn launches.