Dedicated data recording video system for Spacelab experiments
Abstract
In discussing the data recording method, it is pointed out that when the data signals are recorded on the baseband (4.5 MHz) of the video tape recorder (VTR) originally allocated to image signals, the two signals may interfere with each other, with a decline in their SNRs. Two methods are described to counteract this deterioration. The first, the data double FM method, uses the gap that exists between the luminance and chrominance spectra of baseband image signals. To record data signals in this spectral space (after widening the gap by cutting the higher part of the luminance spectrum), the frequency-modulated signals are put there with the least crosstalk with other spectra. Luminance signals accompanied with FM data signals are then frequency-modulated and combined with frequency-shifted chrominance signals. The second method is the RF inter carrier recording method. Here, FM data signals are put into the gap between the luminance and frequency-shifted chrominance spectra.
- Publication:
-
Paris International Astronautical Federation Congress
- Pub Date:
- September 1982
- Bibcode:
- 1982pari.iafcQ....F
- Keywords:
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- Data Recording;
- Spaceborne Experiments;
- Spacelab Payloads;
- Video Equipment;
- Video Tape Recorders;
- Crosstalk;
- Frequency Modulation;
- Space Commercialization;
- Space Shuttle Orbiters;
- Systems Engineering;
- Television Cameras;
- Video Data;
- Spacecraft Instrumentation