In this paper we present the results of our studies of correlation between the radiance fluctuations recorded along a 6-km long path in the spectral intervals with λmax at 445, 540, 650, 800, and 1050 nm. The underflight paths crossed fields of cultivated plants, bare fallow, water surface, forest, etc. Stable features of the paths' radiance have been found that can occur under different meteorological conditions.