Accession Number:

ADA061307

Title:

Preliminary Design Study for VTS Processing/Display Subsystem.

Descriptive Note:

Final rept. Jan-Jun 78,

Corporate Author:

INTERNATIONAL COMPUTING CO BETHESDA MD

Report Date:

1978-06-01

Pagination or Media Count:

313.0

Abstract:

Distributed processing concepts are applied to the design of a highly reliable, modular multiple computer system. A preliminary model of processing and data base requirements is presented for a range of potential Vessel Traffic Services VTS configurations. A survey of system architectures and the state-of-the-art in distributed processing is included. Classes of processors, interconnections and logical structures are considered. Display technology is surveyed. Based on the system models and technology surveys, four system architectures are selected which include large minis and small mini16bit micros interconnection by shared bus and by a network of direct serial lines and alternative logical structures. A preliminary design is presented for each candidate architecture. A set of evaluation criteria and an evaluation methodology is presented. The four candidate architectures are evaluated on the basis of simplicity, feasibility, modularityflexibility, maintainability, expandability, reliability, cost and performance. Two architectures are recommended for further consideration. Both use relatively large minis interconnected by a shared bus. The lesser rated of the two maintains functional assignments of processors throughout the VTS configurations studied. The highest rated architecture allows functional assignments to be rearranged from one configuration to another, thus reducing the hardware required. Author

Subject Categories:

  • Computer Hardware
  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE