Many earth observation satellites are equipped with a higher resolution panchromatic sensor, and a lower resolution multispectral sensor. One example of this is the Pleiades satellite constellation by Airbus, for which the panchromatic sensor has a 70 cm ground sampling distance (GSD), and the multispectral sensor has a 2.8 m GSD, i.e. four times lower than the panchromatic band. The panchromatic band is sensitive to a wide spectrum of light, usually overlapping with several of the other spe...
