Paper Descriptions
 
Papers are sometimes prepared for delivery at conferences attended by SEDRIS participants, or are otherwise written to address significant SEDRIS-related topics. Currently available SEDRIS papers are described below.

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  • An Innovative Approach to Processing and Converting Environmental Data (March 2012)
  • This paper describes an approach to environmental data conversion that uses SEDRIS to manage common conversion issues, and to aid in the mapping between different environmental data models.
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  • The Importance of Establishing Common Methods and Terminologies in Data Mappings (February 2010)
  • This paper discusses methods and terminologies that can facilitate the development of mappings between dictionaries and/or between data models used in the environmental domain. The paper highlights why the use of such methods and terminologies is critical in establishing reliable and practical mappings between systems, and, through specific examples, discusses the types of problems that can occur in mapping.
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  • Guidelines for the Development of Efficient Algorithms for Spatial Operations (February 2006)
  • This paper describes guidelines for the development of computationally efficient algorithms for computing spatial operations. A spatial operation is a coordinate transformation, a coordinate conversion, an azimuth determination, a distance calculation or other computations associated with elliptical trigonometry and map projections. These guidelines have evolved as the result of several projects that have emphasized efficient processing.
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  • Representing the Future Combat Systems Training Integrated Product Team Environmental Representation Requirements in a Logical Data Model (November 2005)
  • This paper describes how the Training Integrated Product Team, working with the Future Combat Systems (FCS) Chief Data Architect team, took the training environmental representation requirements and provided a suggested representation of them in the FCS Data Model.
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  • Future Combat Systems Training Integrated Product Team Environmental Representation Requirements and Mappings to Various Environmental Concepts Dictionaries (November 2005)
  • This paper describes the Training Integrated Product Team (IPT) requirements and the efforts to map their requirements to the dictionaries of other DoD systems. A brief description of each dictionary is given and then the key aspects in mapping the relevant entries from each of the dictionaries to the Training IPT requirements is presented.
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  • SEDRIS - A Collaborative International Infrastructure Technology (June 2004)
  • This paper discusses the state of SEDRIS technical capabilities and its open development approach through examples of international use and collaboration from several application perspectives. The use of SEDRIS technology in several on-going international applications is highlighted. Lastly, the SEDRIS standards development through the International Organization for Standardization (ISO) / International Electrotechnical Commission (IEC), and as Standardization Agreements (STANAGs) through the NATO M&S Group, is reviewed.
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  • TCRS – A Methodology and Tool Set for Specifying Data Content (April 2004)
  • This paper describes an innovative and ongoing development, the Transmittal Content Requirements Specification (TCRS). TCRS leverages the SEDRIS technologies of DRM, EDCS, and SRM to provide a formal methodology for the expression, and the subsequent evaluation, of environmental data requirements. An overview is provided of the various technical components of TCRS, and examples in the application of TCRS to real world data sets.
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  • Standardized Coverages in Terrain Data Sets (July 2003)
  • This paper describes the use of coverages to structure terrain data sets developed to support US Department of Defense systems. These data sets are usually developed by the National Geospatial-Intelligence Agency (NGA), but other terrain data providers use similar, or identical, coverage-based solutions. The VPF-to-STF tool depends on the ability to correctly capture and retain the semantics and organizations of coverages used in NGA products.
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  • Terrain Trafficability in Modeling and Simulation (January 2003)
  • Describes the terrain trafficability representations used in four ground vehicle mobility models for virtual and constructive simulation: MosSAF/SIMNET, CCTT, WARSIM, and NRMM II. It is a "work in progress" and can be expected to evolve as the community becomes more familiar with the nature and use of ground vehicle mobility models and the capabilities of ground vehicle mobility models mature.
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  • Port and Harbor Interactive Simulator - a PC Solution (March 2002)
  • Presents a portable, high-resolution interactive simulation capability of ports and harbors that provide realistic operational support for navigational safety, schoolhouse and ship-board training as well as provide for mission rehearsal, and port protection. This paper describes the project, the tools used to create the simulation, the methodology required to gather the data, the product created, and the users requiring such a technology.
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  • Web-Based Repository for STRICOM SNE Objects (March 2002)
  • [ STRICOM is now known as the Program Executive Office for Simulation, Training and Instrumentation (PEO STRI) ]
    Presents the current status of the Web-Based Repository for STRICOM SNE Objects as well as presents a demonstration of the current capabilities. More importantly, it also discusses the issues involved in standardizing the storage of SNE models and databases and in creating user-friendly search engines that satisfy the needs of the large and diverse M&S customer base. Both these elements are essential in developing repositories that are both robust and easy to use.
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  • A SEDRIS Representation of Atmospheric Data (June 2001)
  • Presents the mapping that was performed for atmospheric gridded fields using the SEDRIS Data Representation Model (DRM), the Spatial Reference Model (SRM), and the Environmental Data Coding Specification (EDCS). An initial mapping for atmospheric observation data is also presented. The DRM provides the organization structure for representing the atmospheric data. The SRM provides a consistent way of specifying the coordinate system used. The EDCS provides a rich set of labels for identifying environmental data in a simulation and for this effort the atmospheric structures and parameters.
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  • A Tool for Visualizing SEDRIS Databases Across the WWW (September 1999)
  • Presents a tool for the real-time representation of SEDRIS databases across the World Wide Web. Accessing SEDRIS data using a client/server model, as well as support for 3D visual, audio and gridded data in the viewer is discussed. Architectural considerations are presented in support of performance requirements of the viewer, as well as the network protocol implemented for data transmission between the client and server.
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  • New Efficient Procedures for Geodetic Coordinate Transformations (August 1999)
  • To relate environmental parameters to the Earth requires accurate georeferencing based on geodetic coordinates. This implies an increased use of geodetic coordinates in distributed joint simulation and related applications. In existing distributed simulation systems, geodetic coordinate transformations already induce a heavy computational burden. This limits the number of entities that can be simulated. This paper develops new methods that have improved the situation.
  • Using SEDRIS for Representation and Interchange of Environmental Data in Signature Prediction and Sensor Simulation Applications (August 1999)
  • Presents some common technical issues surrounding the capture of environmental data for sensor representations in SEDRIS.
  • Choosing a Coordinate Framework for Simulations (August 1999)
  • Reviews the generic spectrum of available coordinate systems and earth-reference models from the perspective of the simulation model developer. Examines the primary assumptions that environment and military modelers make about their coordinate-space, under what conditions those assumptions lead to errors, and how those errors can best be ameliorated. Highlights the impact of coordinate system selection on both kinetic and kinematic dynamics formulations.
  • Efficient Procedures for Geodetic Coordinate Transformations (March 1999)
  • To relate environmental parameters to the Earth requires accurate georeferencing based on geodetic coordinates. This implies an increased use of geodetic coordinates in distributed joint simulation and related applications. In existing distributed simulation systems, geodetic coordinate transformations already induce a heavy computational burden. This limits the number of entities that can be simulated. This paper develops methods that improve the situation.
  • SEDRIS Data Coding Standard (SDCS) (March 1999)
  • [ Now known as the Environmental Data Coding Specification (EDCS) ]
    Discusses how the SEDRIS Data Representation Model (DRM) relates to the SEDRIS Data Coding Standard (SDCS); why are they separate; the organizational structure of the SDCS; how the components relate to standards external to SISO (both legacy and future); the extents, capabilities and contents of the SDCS; and how the SDCS relates to the High Level Architecture (HLA) Object Model Data Dictionary (OMDD).
  • Using SEDRIS for CGF Terrain Database Generation (August 1998)
  • Addresses the use of SEDRIS for generating CGF terrain databases, particularly Compact Terrain Database (CTDB) representations for ModSAF, the Army STOW-A experiment, and the Close Combat Tactical Trainer (CCTT).
  • Detecting Implicit Grids in Terrain Databases Using a Fast Fourier Transform (August 1998)
  • Proposes a technique for finding an optimal set of grid parameters for a terrain database using the Fast Fourier Transform.
  • Producing Terrain Databases for Computer Generated Forces Using SEDRIS (August 1998)
  • Describes how SEDRIS has been used in the creation of a compiler to convert SEDRIS data to the format of the Compact Terrain Database (CTDB) used by the ModSAF Computer Generated Forces (CGF) program.
  • SEDRIS Coordinate Transformation Services (August 1998)
  • The SEDRIS Project provides coordinate system services to support the population of SNE databases for those coordinate systems listed in the SEDRIS Spatial Reference Model. This paper contains revised mathematical formulations of the initial development phase for these transformations that lead to new accurate and efficient algorithms.
  • The SEDRIS Development Project (May 1998)
  • The SEDRIS project was conceived and implemented to capture and provide a complete (terrain, ocean, atmosphere, and space) data representation model of the physical environment, access methods to that data representation model, and an associated interchange format.
  • SEDRIS Geospatial Reference Model (April 1998)
  • [ Now known as the Spatial Reference Model (SRM) ]
    Defines the specification of coordinates, datums, projections, and a variety of geo- and non-geo-referenced spatial reference systems as used in SEDRIS.
  • Trainer Architecture Evolution (March 1998)
  • Examines this evolution of the architecture of training systems over the past two decades to show why there is now a need for an environmental data interchange mechanism such as SEDRIS.
  • Environmental Databases (March 1998)
  • Differentiates between two similar but uniquely different concepts and to fully define what an environmental database is in SEDRIS terms.
  • SEDRIS as an Interchange Medium (March 1998)
  • Documents the standardized interchange component of SEDRIS with respect to ccommodating diverse clients with a variety of representational requirements.
  • SEDRIS Data Representation Model (March 1998)
  • Discusses the definition and implementation of the SEDRIS data representation model including an explanation of the notation used by the data representation model.
  • SEDRIS Vision (March 1998)
  • Presents a "management level vision" of the SEDRIS project. SEDRIS’ open transmittal medium can and will save significant dollars and will improve the success rate of training systems’ interoperability.
  • The Environment (March 1998)
  • Presents the SEDRIS definition of environment and explores how this definition impacts the design of the SEDRIS data representation model.
 
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Last updated: September 12, 2012