Project Title:

Facility for Integrated System Testing (FIST) of Space Station Communication and

14.03-3220
Facility for Integrated System Testing (FIST) of Space Station Communication and
Tracking System
Stanford Telecommunications Inc.
6888 Elm Street
Mclean
VA
22101
Zakrzewski

NAS9-17607
Amount:   
JSC
NAS9-17281

Abstract:

   The development and delivery of a prototype facility for integrated simulation,modeling and analysis of potential space station multi-access communication options
has been accom-
plished.  The new hybrid modeling technique for the RF link analysis combines the
inherent time benefits of analytic modeling extensions (such as importance sampling
and extreme value theory) with the flexibility of a Monte Carlo direct simulation
approach.  An agenda-based expert system is proposed to take outputs from the RF
link analysis and assess potential impacts on the multi-access technique.  Run time
control of this library of modeling tools and the innovative approaches to chaining
data flow through the communication link components is performed by a master executive
also to be implemented with Artificial Intelligence techniques.  The goal is to provide
JSC with a fully optional prototype which will reduce the time it takes a system
engineer to evaluate a communication system and thus increase the number of options
he can consider in Real Time.  The results validated the technical feasibility of
all module and user interfaces and demonstration CPU time savings of multipleorders
of magnitude.