Title

Elements of Simulation Error Analysis

Creator

Whitbeck, Richard F.

Date

1982

Identifier

ADA128497

ADA128497

Abstract

The past decade has seen an order-of-magnitude increase in reliance on fixed and moving based digital simulation for research and training in all types of aircraft. Along with this increase there has been a growing need to identify and analyze those anomalies introduced by digital computation which can adversely affect the fidelity of a simulation. Those anomalies arise for a variety of reasons, the most important being: (1) two or more computers required in a large simulation, each working in its own frametime, (2) serial processing (calling) of subroutines which can cause skewed or stale data effects, (3) throughput delays, and (4) effects of various integration algorithms. This report develops several key tools useful for the analysis of computer algorithms working in a skewed data, multi-rate environment and thus makes it possible to analytically investigate the anomalies mentioned above. Toward this end, numerous case studies, based upon existing computer simulations, are presented which specifically treat the independent processor problem and the unintentional filtering introduced by the serial call of subroutines.

Date Issued

1982-06

Extent

183

Corporate Author

Systems Technology, Inc.

Laboratory

Flight Dynamics Laboratory

Corporate Report Number

TR-1173-1

Report Number

AFWAL-TR-82-3022

Contract

F33615-81-C-3606

DoD Project

2304

DoD Task

2304N3

Distribution Conflict

No

Access Rights

approved for public release; distribution unlimited.

Photo Quality

Not Needed

Distribution Classification

1

DTIC Record Exists

Yes

Report Availability

Full text available by request

Provenance

University of Colorado Colorado Springs, Kraemer Family Library

Type

report