Question

Define spectral signature?

Answer 1

Answer:

Spectral signature is the variation of reflectance or emittance of a material with respect to wavelengths (i.e., reflectance/emittance as a function of wavelength). The spectral signature of stars indicates the composition of the stellar atmosphere. ... Each substance will have its own unique pattern ofspectral lines.

Answer 2

Answer:

Spectral signature is the variation of reflectance or emittance of a material with respect to wavelengths (i.e., reflectance/emittance as a function of wavelength). ... Calibrating spectral signatures under specific illumination are collected in order to apply a correction to airborne or satellite imagery digital images.