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Embedded Simulation
| Venue: | Armor Magazine, JuneJuly,1999 |
| Citations: | 1 - 1 self |
BibTeX
@INPROCEEDINGS{Bahr_embeddedsimulation,
author = {Hubert A. Bahr and Ronald F. Demara},
title = {Embedded Simulation},
booktitle = {Armor Magazine, JuneJuly,1999},
year = {}
}
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Abstract
Maintaining coherence between the independent views of multiple participants at distributed locations is essential in an Embedded Simulation environment. Currently, the Distributed Interactive Simulation (DIS) protocol maintains coherence by broadcasting the entity state streams from each simulation station. In this dissertation, a novel alternative to DIS that replaces the transmitting sources with local sources is developed, validated, and assessed by analytical and experimental means. The proposed Concurrent Model approach reduces the communication burden to transmission of only synchronization and model-update messages. Necessary and sufficient conditions for the correctness of Concurrent Models in a discrete event simulation environment are established by developing Behavioral Congruence ΨB(EL, ER) and Temporal Congruence ΨT(t, ER) functions. They indicate model discrepancies with respect to the simulation time t, and the local and remote entity state streams EL and ER, respectively. Performance benefits were quantified in terms of the bandwidth reduction ratio BR=N/I obtained from the comparison of the OneSAF Testbed Semi-Automated Forces (OTBSAF) simulator under DIS requiring a total of N bits and a testbed modified for the Concurrent Model approach which required I bits. In the experiments conducted, a range of 100 ≤ BR ≤ 294 was obtained representing two orders of magnitude reduction in simulation traffic.
Keyphrases
concurrent model approach bandwidth reduction ratio br discrete event simulation environment behavioral congruence distributed location transmitting source model discrepancy magnitude reduction concurrent model entity state stream sufficient condition communication burden distributed interactive simulation simulation time multiple participant protocol maintains coherence experimental mean local source remote entity state stream el simulation station temporal congruence embedded simulation environment novel alternative simulation traffic model-update message onesaf testbed semi-automated force independent view
