| EBCDIC | Extended Binary Coded Decimal Interchange Code An 8-bit character encoding scheme used primarily on IBM machines. |
| ECOSYSTEM | An ecologic system composed of interacting organisms and their environments. The result of interaction between biological, geochemical and geophysical systems. |
| EDAC | Earth Data Analysis Center EDAC, also known as the Technology Applications Center (TAC), has served as a NASA center since 1964. EDAC operates under the objective of transferring Earth-observing technologies to the user community. It supports and works directly with industries developing technologies related to space science and collaborating with them to enhance and encourage the user community to adopt the new technologies. EDAC also supports and works with public agencies, private citizens, educational organizations, and volunteer groups to ensure ready accessibility to NASA generated space imagery. For further information, contact: Earth Data Analysis Center |
| EDC | Earth Resources Observation Systems Data Center EDC is a national archive, production, distribution, and research facility for remotely sensed data and other geographic information. See also EROS. |
| EDI : Electronic Data Interchange | ÀüÀÚµ¥ÀÌÅͱ³È¯ |
| EDRA | European Digital Roadmap Association |
| EIPS | Space Imaging EOSAT Image Processing System EIPS is software that calculates the maximum number of image lines that can be consolidated into a tape record. |
| ELECTROMAGNETIC SPECTRUM | Electromagnetic radiation is energy propagated through space between electric and magnetic fields. The electromagnetic spectrum is the extent of that energy ranging from cosmic rays, gamma rays, X-rays to ultraviolet, visible and infrared radiation including microwave energy. Electromagnetic Spectrum |
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| EMISSION SPECTROGRAPHY | This destructive analytical technique is used to determine concentrations of specific chemical elements based on their emission or absorption of specific wavelengths of electromagnetic radiation. |
| encapsulation | Äν¶È |
| encapsulation specification | ºÎÈ£È ±Ô°Ý |
| entity | °³Ã¼ |
| EPA | Environmental Protection Agency Established on December 2, 1970, the EPA is charged with protecting and enhancing the environment for present and future generations to the fullest extent possible under Congressional law with responsibilities including the control of solid waste, pesticides, radiation, and toxic substances, and the abatement of air and water pollution. The EPA coordinates research and antipollution activities with State and local governments, educational institutions, private and public groups, and individuals. |
| EPHEMERIS | A table of predicted satellite orbital locations for specific time intervals. The ephemeris data help to characterize the conditions under which remotely sensed data are collected and are commonly used to correct the sensor data prior to analysis. |
| EROS | Earth Resources Observation Systems The EROS program was established in the early 1970s, under the Department of the Interior's U.S. Geological Survey, to receive, process, and distribute data from United States Landsat satellite sensors and from airborne mapping cameras. See also EDC. |
| ESIC | Earth Science Information Center The U.S. Geological Survey (USGS) operates a network of ESICs designated to distribute USGS earth science data and related products. There are more than 75 ESIC offices throughout the United States. Major offices are managed by the USGS, but numerous affiliate offices are managed by various State and Federal agencies. |
| ESRI | Environmental Systems Research Institute Headquartered in Redlands, California, ESRI provides Geographic Information System (GIS) software, products, and services. |
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| exchange media | ±³È¯¸Åü |
| EXPORT | EXPORT creates an ARC/INFO interchange file to transfer coverages, INFO data files, text files, and other ARC/INFO files between various computer systems. An interchange file contains all coverage information and appropriate INFO file information in a fixed length, ASCII format. It can be fully or partially compressed as well as uncompressed ASCII depending upon the given EXPORT option. |
| Express language | ISO10303-11:1994, The EXPRESS language description method |
| EXTRAPOLATE | To infer (values of a variable in an unobserved interval) from values within an already observed interval. |