From diderot@hitl.washington.edu Wed May 3 14:34:51 1995 Return-Path: Received: from mx5.u.washington.edu by stein2.u.washington.edu (5.65+UW95.02/UW-NDC Revision: 2.32 ) id AA06811; Wed, 3 May 95 14:34:51 -0700 Received: from hitl-new.hitl.washington.edu by mx5.u.washington.edu (5.65+UW95.02/UW-NDC Revision: 2.31 ) id AA11348; Wed, 3 May 95 14:34:50 -0700 Received: from [128.95.74.170] (diderot.hitl.washington.edu [128.95.74.170]) by hitl.hitl.washington.edu (8.6.12/8.6.12) with SMTP id OAA09136 for ; Wed, 3 May 1995 14:30:15 -0700 X-Sender: diderot@hitl.washington.edu Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 3 May 1995 14:32:02 -0700 To: scivw@hitl.washington.edu From: IMAGE@ACVAX.INRE.ASU.EDU (by way of diderot@hitl.washington.edu (Toni Emerson)) Subject: 4/30/95 UPDATE - IMAGE SIG Symposia Status: OR ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UPDATE - 30 APRIL '95 NETWORKED SIMULATION SIG SYMPOSIA 17 JULY (Monday 0800-1700) Chair: Karl Spuhl (M098741%SLVMA.profs@mdcgwy.mdc.com) Tel: 314-233-8979/FAX 232-7972 ----------------------------- 0800-0815: INTRODUCTION (Karl Spuhl, MDA) Welcome, announcements, preliminary overview, agenda. Statement of SIGNET's charter. 0815-0845: 1994 IMAGE CONFERENCE MINUTES (Mike Sieverding, ARINC) Review of open action items and highlights from 1994 IMAGE conference. 0845-0945: CCTT BRIEFING ON NETWORKED IG ISSUES (Ron Moore, E&S) (Abstract on topic will follow as soon as available) 0945-1000: BREAK 1000-1100: EXPERIMENTAL TESTING OF NETWORKED VISUAL SIMULATION CORRELATION (Mike Panzitta, E&S) Open discussion to formulate networking tests and demonstrations that can be implemented by hardware and software developers at the 1996 IMAGE Conderence. Discussion to include the kinds of tests that are achievable and will produce results all participants can benefit from. 1100-1130: NETWORKING TOOLKIT BASED ON DISTRIBUTED INTERACTIVE SIMULATION PROTOCOLS (Deb Herman, MaK Technologies) (Abstract on topic will follow as soon as available) 1130-1200: KEY NETWORKING ISSUES SIGNET SHOULD BE ADDRESSING (Mike Sieverding, Karl Spuhl) Open discussion concerning issues SIGNET should be addressing in the future. 1200-1300: LUNCH 1300-1630: (With 15-20 minute break) SYNTHETIC ENVIRONMENT DATA REPRESENTATION & INTERCHANGE SPECIFICATION (SEDRIS); (Dr. Paul Birkel, MITRE; Farid Mamaghani, IDA/PM-CATT) - Achieving true interoperability among heterogeneous simulations requires ensuring that each simulation has a consistent view of the simulated environment, as well as the properties and actions of each of the players. ALSP and DIS provide frameworks for achieving these ends for the domains of constructive and virtual simulations, respectively. These frameworks are based on comparable sets of protocols for communicating simulation entity state information. Both frameworks assume that a shared initial synthetic environment (terrain, features, etc.) exists for all simulation entities, and require that simulation entities then maintain consistent views of the evolving environmental state throughout the exercise. However, neither framework ensures that proper exchange of the initial synthetic environment. Simulation heterogeneity introduces a difficult challenge in ensuring that simulations with different interests in the synthetic environment receive correlated views of the single "true" initial environment. The process of receiving, or interchanging, a starting environmental state is a necessary, but not sufficient, precondition to achieving simulation interoperability and correlation. Standardizing this environment data interchange process is a critical problem currently facing the simulation community. The environmental interests of simulations can be loosely divided into three classes; those of sensing and moving, problem solving, and abstraction. Each introduces a requirement for differing views of the same environmental object or data element, which must be correlated. Sensors and movers require either polygonal surface decompositions of the terrain and the 3D objects upon it, or volumetric decompositions of the ocean and atmosphere. Sensors often characterize surfaces not only by local properties, but also by higher-detail renditions represented as textures (e.g. typical forest canopy, or an aerial photograph of a target area). Problem solvers require the division of the environment into meaningful objects and their relationships, which are often expressed in terms of spatial primitives in a topologic framework. Some problem solvers are external to the simulation (i.e. "man-in-loop") and require maps, charts, and other traditional representations of the environment. Finally, many simulations (particularly real-time or faster than real-time) require the ability to manage their performance by reducing the environing environmental objects, elements, or partitions. Successful data interchange requires that these potentially conflicting views of the same environmental object or element be integrated into a single, coherent, data representation. We have characterized this integration problem in terms of two principal requirements: "representational polymorphism" and "correlated levels of detail". SEDRIS, a new initiative by ARPA and STRICOM, addresses these requirements through the specification of a neutral interchange mechanism basen on a data model, a feature data dictionary, and an access language (i.e. API). SEDRIS is intended to support the interchange of synthetic environment data sets among heterogeneous simulations across the full range of M&S functional activities. 1630-1700: QUESTIONS & ANSWERS (Dr. Paul Birkel, Farid Mamaghani) Concluding remarks (Mr. Mike Sieverding, Karl Spuhl) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ FOR ADDITIONAL INFORMATION To obtain a Detailed Program of all of the other 7 SIG Meetings, descriptions of the 12 Technical Professional Development Courses, Registration Information, and/or Vendor Display Information, send an email request to: Image@acax.inre.asu.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~