Picture of the Month - UMAC Following Crop Growth Through the Season Remote sensing provides temporal, spectral and spatial information about objects. The temporal aspect, i.e. imagery acquired at different times during the growing season, gives information concerning the growth of the crops and provides information on the growth process.
Spectral aspects refer to the physical condition or the chemical composition of the object.
The spatial aspects concern the position and extent of objects and their spatial distribution. Throughout the growing season the reflectance of vegetation in the green and red spectra show a similar pattern while effects in near infrared are opposite to those in the visible bands. The reflectance in visible bands decrease with increasing growth of the vegetation, while during the same time the reflectance in the near infrared will increase, resulting in red color in false color displayed images. For bare soil all reflectances are almost equal in all bands resulting in a grey color on the displayed images. June 26, July 14, July 30, August 15, August 31, September 15, and October 18.