Analysis of Digital Topographic Data Issues In Support of Synthetic Environment Terrain Data Base Generation

摘要

The purpose of this study is to analyze digital topographic data (DTD) problems and issues involved in the process of synthetic environment terrain data base generation systems (DBGS). The first phase of the study examined four systems: (1) U.S. Army TEC, Digital Products Center, DBGS supported by LNK, Alexandria, VA; (2) Close Combat Tactical Trainer terrain DBCS, operated by Evans and Sutherland, Salt Lake; City, UT; (3) USAF 58th Training Support Squadron's Mission Training Support System terrain DBGS operated by Lockheed Martin, Kirkland AFB, NM; (4) USAF Special Operations Command's Special Operations Forces Aircrew Training System terrain DBGS operated by Loral Defense Systems, Hurlburt Field, FL. All of these systems use National Imagery & Mapping Agency DTD and produce run time data bases for various types of image generators supporting different polygonal representations. The second phase of the report identifies the problems associated with the use of current DTD products as inputs to the SE DBCS process. This report is to be used as an educational tool for understanding the issues and problems of these four systems regarding the generation of SE terrain data bases from DTD and alternate sources. The results of this study identified several key issues and (Continued on reverse).