词条 | DTED | ||||||||||||||||||||||||||||||||||||
释义 |
DTED supports many applications, including line-of-sight analyses, terrain profiling, 3-D terrain visualization, mission planning/rehearsal, and modeling and simulation. DTED is a standard National Geospatial-Intelligence Agency (NGA) product that provides medium resolution, quantitative data in a digital format for military system applications that require terrain elevation. The DTED format for level 0, 1 and 2 is described in U.S. Military Specification Digital Terrain Elevation Data (DTED) MIL-PRF-89020B, and amongst other parameters describes the resolution for each level:
The precise spacing is defined by dividing the world into zones based on latitude, and is given in the following table:
In addition three more levels (3, 4 and 5) at increasing resolution have been proposed, but not yet standardized. DTED data is stored in a big endian format where negative numbers are signed magnitude. References1. ^{{cite web|author=|url=http://dl.acm.org/citation.cfm?id=1639931&dl=ACM&coll=DL&CFID=61818513&CFTOKEN=86261749 |title=Defining mean sea level in military simulations with DTED |publisher=Dl.acm.org |date=2009-03-22 |accessdate=2016-01-31}} External links
3 : Radar|Cartography|GIS file formats |
||||||||||||||||||||||||||||||||||||
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。