Remote Modules - An approach to decentralized telemetry systems
Remote modules for spacecraft analog/digital telemetry distributing multiplexer input gates
Maxwell, M. S.↗
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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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A linguistic approach to telemetry decommutation
Telemetry decommutation system using linguistic and statistical methods in pattern recognition
Kulick, J. H.↗
The versatile information processor - A unique concept for an adaptable satellite telemetry system
Nimbus 4 satellite telemetry information processor with data sampling and formatting flexibility
Feinberg, P.↗
Suppressed carrier tracking for two-channel phase-modulated telemetry
Suppressed RF carrier tracking for two channel interplex phase modulated telemetry
Butman, S.↗
An efficient N-channel telemetry system for space exploration
N-channel PSK/PM digital telemetry system modulation scheme for space exploration
Butman, S.↗
An efficient and versatile telemetry subcarrier demodulation technique for deep space telecommunications
Wideband subcarrier frequencies demodulation technique for uncoded or coded PSK telemetry over large input SNR range for deep space interplanetary communication
Brockman, M. H.↗
An eight channel micropowered PAM/FM biomedical telemetry system
Eight channel micropowered miniature biomedical PAM/FM telemetry system for implantation in research subjects aboard orbiting space station
Adey, W. R.↗
Cardiovascular telemetry implants
Cardiovascular telemetry total implants, describing measurement problems, equipment design, low current operation, size and thermal and temporal stability
Rader, R. D.↗
Decision rules for a two-channel deep-space telemetry system
Optimum and suboptimum decision rules for two- channel deep space telemetry system with modulation consisting of PM with two orthogonal phase functions
Butman, S.↗
Interplex - An efficient multi-channel PSK/PM telemetry system
Multichannel PCM/PSK/PM interplex telemetry system for reducing cross modulation loss and excess carrier reference power
Butman, S.↗
Hadamard source encoding techniques applied to Apollo telemetry links - An evaluation
Hadamard transform source encoding application to Apollo unified S-band telemetry links, considering possible system performance improvement
Dawson, C. T.↗
Accurate measurement of telemetry performance
Performance of high rate telemetry stations used in the Deep Space Network is verified. Measurement techniques are discussed.
Burt, R. W.↗
Narrowband, crystal-controlled biomedical telemetry system
Telemetry system utilizing miniature, single-channel, crystal-controlled transmitter is described suitable for biomedical applications. Receiver used in conjunction with transmitter is narrowband superheterodyne FM receiver with crystal control in both conversion stages.
Westbrook, R. M.↗
Flight instrument and telemetry response and its inversion
Mathematical models of rate gyros, servo accelerometers, pressure transducers, and telemetry systems were derived and their parameters were obtained from laboratory tests. Analog computer simulations were used extensively for verification of the validity for fast and large input signals. An optimal inversion method was derived to reconstruct input signals from noisy output signals and a computer program was prepared.
Weinberger, M. R.↗
High data rate coding for the space station telemetry links.
Coding systems for high data rates were examined from the standpoint of potential application in space-station telemetry links. Approaches considered included convolutional codes with sequential, Viterbi, and cascaded-Viterbi decoding. It was concluded that a high-speed (40 Mbps) sequential decoding system best satisfies the requirements for the assumed growth potential and specified constraints. Trade-off studies leading to this conclusion are viewed, and some sequential (Fano) algorithm improvements are discussed, together with real-time simulation results.
Lumb, D. R.↗
Telemetry and the integrated avionics approach.
The unique problems encountered in the integrated approach to aircraft and spacecraft avionics system designs are discussed with the emphasis on recent advances in telemetry as a factor facilitating the integration. A listing of subsystems planned for integration on the Space Shuttle vehicle is given, covering auxiliary pumping and propellant, crew controls and displays, computation, communications and radar, electric power, guidance, navigation and control, air-bearing engines, main engines, reaction control, and structural/mechanical elements. Considerations are given for the multiplexed data bus design applicable to integrated avionics.
Frost, W. O.↗
Eight-channel telephone telemetry system
Portable telemetry system uses conventional telephone link which eliminates mailing or messenger service between physician and analyst. Transmitter is used by physician; receiver is used by analyst. Each unit is inductively coupled to its respective telephone set, transmitter converting EEG into audio frequency and receiver converting this frequency back to EEG.
Smith, R.↗
Multichannel telemetry system
A two-channel telemetry system is described in which one channel is used for high-rate data and the other channel for low-rate data communication. In the transmitter a signal, which subsequently phase modulates a carrier, is produced which is a function of at least the high-rate data, the low-rate data and the frequency of the subcarrier of the low-rate channel. In the receiver which includes a phase-locked loop, the high-rate data is detected off the receiver inphase channel output and the low-rate off the quadrature channel output.
Butman, S.↗