Glossary of Terms - I

Independent variable

A variable that is used to change a dependent variable and experiment its values. See dependent variable for example.

Interpolation

Mathematical procedure for estimating unknown values from neighboring known data.

Inverse distance weighting

An interpolation method that gives more weight to known data that is near the point of estimation than those that are farther away.

Ionosphere

Atmospheric layer that exists from 50 to 250 miles above the earth’s surface and contains electrically charged particles.

ISOBUS standard 11783

A communication protocol for the agricultural industry that is used to specify a serial data network for control and communications on forestry or agricultural tractors and implements. ISOBUS-compliant tractors and implements come with round 9-pin connectors.