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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- .
- 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.
- .
- 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.
- 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.
- .
- 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.
- .
- 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.
- .
- 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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