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  • 1
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    Quick-look decoding schemes for DSN convolutional codes (1979)
    In:  CASI
    Details
    Publication Date: 2006-06-01
    Description: Decoding schemes are proposed for the tracking systems of the galileo project. Quick look decoding schemes requiring only shift registers are given for the DSN (7, 1/2) and (7, 1/3) convolutional codes. These schemes are used when the communication channel is error free. The schemes decode the data, symbol errors, and the lack of node syncronization.
    Keywords: CYBERNETICS
    Type: The Deep Space Network; p 162-166
    Format: text
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  • 2
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    A fast technique for computing syndromes of BCH and RS codes (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A combination of the Chinese Remainder Theorem and Winograd's algorithm is used to compute transforms of odd length over GF(2 to the m power). Such transforms are used to compute the syndromes needed for decoding CBH and RS codes. The present scheme requires substantially fewer multiplications and additions than the conventional method of computing the syndromes directly.
    Keywords: CYBERNETICS
    Type: The Deep Space Network; p 67-70
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  • 3
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    Number of minimum-weight code words in a product code (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Consideration is given to the number of minimum-weight code words in a product code. The code is considered as a tensor product of linear codes over a finite field. Complete theorems and proofs are presented.
    Keywords: CYBERNETICS
    Type: Electronics Letters; 14; Sept. 14
    Format: text
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  • 4
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    Fast transforms for decoding Reed-Solomon codes (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: In the paper it is shown that the Chinese remainder theorem when coupled with a modification of Winograd's method can be used to compute Fourier-like transforms over GF (s super m), where m = 2, 3, . . . , 8. These new transform techniques are to decode Reed-Solomon codes of block length 2 super m -1. The results are shown to be more efficient than the more conventional method.
    Keywords: CYBERNETICS
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  • 5
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    Space Applications of Automation, Robotics and Machine Intelligence Systems (ARAMIS). Volume 4: Supplement, Appendix 4.3: Candidate ARAMIS Capabilities (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Potential applications of automation, robotics, and machine intelligence systems (ARAMIS) to space activities, and to their related ground support functions, in the years 1985-2000, so that NASA may make informed decisions on which aspects of ARAMIS to develop. The study first identifies the specific tasks which will be required by future space projects. It then defines ARAMIS options which are candidates for those space project tasks, and evaluates the relative merits of these options. Finally, the study identifies promising applications of ARAMIS, and recommends specific areas for further research. The ARAMIS options defined and researched by the study group span the range from fully human to fully machine, including a number of intermediate options (e.g., humans assisted by computers, and various levels of teleoperation). By including this spectrum, the study searches for the optimum mix of humans and machines for space project tasks.
    Keywords: CYBERNETICS
    Type: NASA-CR-162083 , NAS 1.26:162083 , SSL-24-82-VOL-4-SUPPL-APP-4.3
    Format: application/pdf
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  • 6
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    Decoding of B.C.H. and R.S. codes with errors and erasures using continued fractions (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Through the use of continuing fractions, a simplified algorithm for decoding B.C.H. and R.S. codes is developed that corrects both erasures and errors on a finite field GF(q to the m). It is noted that the decoding method is a modification of the Forney-Belekamp technique. Finally, it is believed that the present scheme is both simpler to understand and to implement than more conventional algorithms.
    Keywords: CYBERNETICS
    Type: Electronics Letters; 15; Aug. 16
    Format: text
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  • 7
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    Space Applications of Automation, Robotics and Machine Intelligence Systems (ARAMIS). Volume 1: Executive Summary (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Potential applications of automation, robotics, and machine intelligence systems (ARAMIS) to space activities, and to their related ground support functions are explored. The specific tasks which will be required by future space projects are identified. ARAMIS options which are candidates for those space project tasks and the relative merits of these options are defined and evaluated. Promising applications of ARAMIS and specific areas for further research are identified. The ARAMIS options defined and researched by the study group span the range from fully human to fully machine, including a number of intermediate options (e.g., humans assisted by computers, and various levels of teleoperation). By including this spectrum, the study searches for the optimum mix of humans and machines for space project tasks.
    Keywords: CYBERNETICS
    Type: NASA-CR-162079 , NAS 1.26:162079 , SSL-21-82-VOL-1
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  • 8
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    Simplified algorithm for correcting both errors and erasures of Reed-Solomon codes (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Using a finite-field transform, a simplified algorithm for decoding Reed-Solomon codes is developed to correct erasures as well as errors over the finite-field GF(q to the m power), where q is a prime and m is an integer. If the finite-field transform is a fast transform, this decoder can be faster and simpler than a decoder that uses more conventional methods.
    Keywords: CYBERNETICS
    Type: Institution of Electrical Engineers; vol. 126
    Format: text
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  • 9
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    Space applications of Automation, Robotics and Machine Intelligence Systems (ARAMIS). Volume 2: Space projects overview (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Applications of automation, robotics, and machine intelligence systems (ARAMIS) to space activities, and their related ground support functions are studied so that informed decisions can be made on which aspects of ARAMIS to develop. The space project breakdowns, which are used to identify tasks ('functional elements'), are described. The study method concentrates on the production of a matrix relating space project tasks to pieces of ARAMIS.
    Keywords: CYBERNETICS
    Type: NASA-CR-162080-VOL-2 , NAS 1.26:162080-VOL-2 , SSL-22-82-VOL-2
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  • 10
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    Space applications of Automation, Robotics and Machine Intelligence Systems (ARAMIS). Volume 4: Application of ARAMIS capabilities to space project functional elements (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Applications of automation, robotics, and machine intelligence systems (ARAMIS) to space activities and their related ground support functions are studied, so that informed decisions can be made on which aspects of ARAMIS to develop. The specific tasks which will be required by future space project tasks are identified and the relative merits of these options are evaluated. The ARAMIS options defined and researched span the range from fully human to fully machine, including a number of intermediate options (e.g., humans assisted by computers, and various levels of teleoperation). By including this spectrum, the study searches for the optimum mix of humans and machines for space project tasks.
    Keywords: CYBERNETICS
    Type: NASA-CR-162082-V0L-4 , NAS 1.26:162082-VOL-4 , SSL-24-82-VOL-4
    Format: application/pdf
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