GIS Dictionary

[statistics] A statistic computed by the regression equation to quantify model performance. The value of R-squared ranges from 0 to […]

A tree data structure, similar to a B-tree, used for indexing spatial data within a database. In an R-tree structure,

[physics] Acronym for radio detection and ranging. A device or system that detects surface features on the earth by bouncing

[physics] An instrument that determines elevation, usually from mean sea level, by measuring the amount of time an electromagnetic pulse

[remote sensing] The analysis of interferograms that have been created by IFSAR, or artificially. Radar interferometry involves the comparison of

[spatial statistics use for geostatistics] In ArcGIS Geostatistical Analyst, a deterministic interpolation method. The interpolated surface is forced to conform

[Euclidean geometry] The angle subtended by an arc of a circle that is the same length as the radius of

[physics] The emission and propagation of energy through space in the form of waves. Electromagnetic energy and sound are examples

[physics] An instrument that measures the intensity of radiation in a particular band of wavelengths in the electromagnetic spectrum, such

[remote sensing] Procedures that correct or calibrate aberrations in data values due to specific distortions from such things as atmosphere

[physics] The sensitivity of a sensor to incoming reflectance. Radiometric resolution refers to the number of divisions of bit depth