Definitions for "Spectral resolution"
The ability to distinguish two spectral features close to one another; the smallest difference in wavelength between two such distinguished features.
The term spectral resolution refers to the width of spectral bands that a satellite imaging system can detect. Often satellite imaging systems are multi-spectral meaning that they can detect in several discrete bands, it is the width of these bands that spectral resolution refers too. The narrower the bands, the greater the spectral resolution.
Range of wavelengths incorporated into each image channel and/or number of channels in image.