The difference between the true distance (from sensor) to target and the calculated
distance to target based on sensor data, at maximum sensor range.
The least radial separation between two targets in the same direction from a radar that allows them to be distinguished.
This separation equals one-half the transmitted pulse length. Targets closer together than this distance are not resolved and appear as a single target on the display.
Range Resolution has been defined 2 different ways in documents like Ballistic Missile Defense, Glossary of Meteorological Terms.