resolution (parameter)

A remote sensing term which has three separate applications: a) spatial resolution, which refers to the ability of a sensor to distinguish between objects that are spatially close to each other. It is a measure of the smallest angular or linear separation between two objects. b) Spectral resolution which refers to the ability of a sensor to distinguish between objects which are spectrally similar. It is a measure of both the discreteness of wavebands and the sensitivity of the sensor to distinguish between electromagnetic radiation intensity levels. c) Thermal resolution which refers to the ability of a sensor to distinguish between objects with a similar temperature. (Source: WHIT)