Glossary

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- This is a glossary of terms commonly used with World Wind.

A

 * add-on
 * A feature that is not part of the core of World Wind. These can be layers, scripts or in some other way related to World Wind.  Add-ons are usually community made.


 * Altitude
 * Distance above sea level.


 * ARC
 * NASA Ames Research Center

C

 * CRS
 * coordinate reference system

D

 * dataset
 * The imagery used to cover the surface of the world.
 * Also used: Surface Data.


 * DDS
 * Direct Draw Surface. World Wind saves textures in this File Format.


 * Dapple
 * Worldwind fork with Google look alike interface and enhanced Layer management.details

G

 * GIS
 * Geographic Information System


 * GML
 * Geography Markup Language

K

 * KML
 * Keyhole Markup Language

L

 * LandSat 7
 * The seventh satellite of the LandSat project. See LandSat 7 for information on the satellite's imagery in World Wind.


 * Latitude
 * Degrees difference North or South from the Equator.


 * layer
 * Data that can be shown or hidden on the planet in World Wind. A layer can contain any of images, text and trails.


 * Longitude
 * Degrees difference East or West from Greenwich, England.

M

 * MODIS
 * Moderate Resolution Imaging Spectroradiometer. See Rapid Fire MODIS for usage details in World Wind.

N

 * NASA
 * National Aeronautics and Space Administration


 * NLT
 * NASA Learning Technologies


 * NOSA
 * NASA Open Source Software Agreement


 * NWW
 * NASA World Wind

O

 * Orthophoto
 * A photograph that has been processed to have a uniform-scale.

P

 * pan-sharpening
 * The act of combining a low resolution color image with a high resolution black and white image to create a high resolution color image.

S

 * script
 * A prerecorded series of view changes and text display that can be run from within World Wind.


 * SRTM
 * Shuttle Radar Topography Mission.


 * Surface Data
 * See dataset.


 * SVS
 * Scientific Visualization Studio

T

 * tile
 * An image from a dataset. World Wind downloads datasets one tile at a time.


 * Topographic
 * Graphic representation of the surface features of an area.

U

 * USGS
 * U.S. Geological Survey

W

 * WMS
 * Web Map Server is a specification by the Open Geospatial Consortium. See WMS Browser for usage details in World Wind.


 * WWC
 * World Wind Central