Accession Number : ADA314079

Title :   An Initial Design of Extended Vector Product Format for Modeling and Simulation.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MAPPING SCIENCES SECTION

Personal Author(s) : Shaw, Kevin ; Abdelguerfi, Mahdi ; Cooper, Edgar ; Wynne, Chris ; Miller, H. V.

PDF Url : ADA314079

Report Date : 26 AUG 1996

Pagination or Media Count : 24

Abstract : The Digital Mapping, Charting, and Geodesy Analysis Program (DMAP) has been tasked with making the Defense Mapping Agency's (DMA) georelational Vector Product Format (VPF) more amenable to the Modeling and Simulation community. Under the direction of DMA's Terrain Modeling Program Office and the Defense Modeling and Simulation Office, DMAP has used requirements survey analyses and user feedback to devise a draft Extended VPF (EVPF), utilizing the design constraint of a relational database model. EVPF incorporates a new primitive structure for incorporating a Triangulated Irregular Network (TIN) as a means of representing three-dimensional surfaces. While VPF allows for the storage of three dimensions, this concept has traditionally been exploited primarily as elevation attributes of features. EVPF also stresses the use of attribute tables for storing rendering information. Using variable-length attribute fields, a current VPF capability not used to its fullest extent is also recommended for richer feature attribution.

Descriptors :   *MODELS, *FORMATS, *DIGITAL MAPS, COMPUTER PROGRAMS, DATA BASES, REQUIREMENTS, SIMULATION, DEFENSE SYSTEMS, THREE DIMENSIONAL, SURVEYS, FEEDBACK, USER NEEDS, MAPPING, GEODESY, STORAGE, ELEVATION.

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE