Nasa Spaceborne Optical Disk Recorder Development

T. A. Shull; R. M. Holloway; B. A. Conway

doi:10.1117/12.944636

2 June 1988 NASA Spaceborne Optical Disk Recorder Development

T. A. Shull, R. M. Holloway, B. A. Conway

Proceedings Volume 0899, Optical Storage Technology and Applications; (1988) https://doi.org/10.1117/12.944636
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Spaceflight application of a high performance (high rate, high capacity) erasable optical disk recorder is discussed. NASA has estab-lished a program to develop an optical disk recorder focused on use aboard the unmanned polar orbiting Earth Observing System plat-forms. An expandable modular system concept is proposed consisting of multiple drive modules and a modular system controller. A drive contains two 14 inch magneto-optic disks and four electro-optic heads each con-taining a nine-diode solid state laser array (eight data tracks, one pilot track). The performance goals of the drive module are 20 gigabyte capacity, 300 megabit per second transfer rate, 10x(Exp-10) corrected BER, and 100 millisecond access time. The system goals are 120 gigabyte capacity at up to 1.8 gigabits per second rate, concurrent I/O, varying data rates, reconfigurable architecture, and 2 to 5 year operating life in orbit. The system environment and operational scenarios are presented.

Citation Download Citation

T. A. Shull, R. M. Holloway, and B. A. Conway "NASA Spaceborne Optical Disk Recorder Development", Proc. SPIE 0899, Optical Storage Technology and Applications, (2 June 1988); https://doi.org/10.1117/12.944636

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