Engineering topics
Publications and source records attributed to Frost, W. O..
This overview describes a flexible system of electronic and mechanical building blocks with characteristics and capabilities suitable for construction of a flight-capable experiment data management system. The initial space application of this modular system, called the Spacelab Payload System Modular Electronics (SPSME), is the data system for the Nuclear Radiation Monitor (NRM) on Spacelab Mission 2.
Survey of digital baseband signaling techniques for space shuttle data bus
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.
Multiplex data bus subsystem for improving reliability and reducing weight of space shuttle avionics system
AM baseband telemetry system for wideband signal transmission emphasizing SSB, DSB and quadrature multiplexed DSB modulation techniques
Channel output SNR optimization in AM/FM telemetry system by using automatic gain control, discussing AGC time response and general characteristics
Waveform distortion resulting from adjacent channel crosstalk and from amplitude and phase nonlinearity in channel filters in DSB/SC telemetry link
Redundancy removal processes, classification and nomenclature compared by plotting compression ratio vs rms error and stressing ZVA process
Single-sideband FM for data transmission on vibration and acoustic measurements, noting SNR PERFORMANCE, transmission link, etc
Data system requirements for large space vehicles and flexible telemetry system design for all stages of Saturn IB and V vehicles
Compatible double sideband/single sideband/constant bandwidth FM telemetry system for wideband data
Single-sideband frequency-modulation /ss-fm/ telemetry for transmission of wide-band vibration data from saturn space vehicle