GIS Dictionary
Definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.
Now available for purchase: A to Z GIS: An illustrated dictionary of geographic information systems.
Search the GIS Dictionary:
GIS Bibliography
Researching GIS?
Search the GIS Bibliography for a vast index of books, journals, conference proceedings and reports.
noise
-
[remote sensing]
In remote sensing, any disturbance in a frequency band. -
[data quality]
Any irregular, sporadic, or random oscillation in a transmission signal. -
[telecommunications]
Random or repetitive events that interfere with communication. -
[data quality]
In a raster, irrelevant or meaningless cells that exist due to poor scanning or imperfections in the original source document. 
