Accession Number:

ADA179407

Title:

An Experiment in Knowledge-Based Signal Understanding Using Parallel Architectures.

Descriptive Note:

Technical rept.,

Corporate Author:

STANFORD UNIV CA DEPT OF COMPUTER SCIENCE

Report Date:

1986-10-01

Pagination or Media Count:

42.0

Abstract:

This report documents an experiment investigating the potential of a parallel computing architecture to enhance the performance of a knowledge-based signal understanding system. The experiment consisted of implementing and evaluating an application encoded in a parallel programming extension of Lisp and executing on a simulated multiprocessor system. The chosen application for the experiment was a knowledge-based system for interpreting pre-processed, passively acquired radar emissions from aircraft. The application was implemented in an experimental concurrent, asynchronous object-oriented framework. This framework, in turn, relied on the services provided by the underlying hardware system. The hardware system for the experiment was a simulation of various sized grids of processors with inter-processor communication via message-passing. The experiment investigated the effects of various high-level control strategies on the quality of the problem solution, the speedup of the overall system performance as a function of the number of processors in the grid, and some of the issues in implementing and debugging a knowledge-based system on a message-passing multiprocessor system. This report describes the software and simulated hardware components of the experiment and present the qualitative and quantitative experimental results. Author

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE