| Popis: |
It is known that the investigation of polarization structure of scattered optical radiation considerably enlarges the size of information on physical properties of objects interacting with radiation. For remote sensing the modulation Stokes-polarimeter was used. The main feature of this polarimeter is an electro-optical control converter of polarization in the receiving channel. It allows us to reach the time of single measurement up to a few microseconds and the accuracy does not exceed 0.1%. The measurement process is completely automatic. It carried out the investigation of the following objects: leaves of birch, oak, poplar; geranium; moss. The main consequences are: (1) polarization properties enable us to differ one kind of leaf from another; (2) the rear side of the leaf from the right one; (3) to monitor the degree of natural humidity; (4) to define whether the surface of a given foliage is humid (say, due to rain) or dry. All that and the theoretical investigations carried out by the author now enable us to conclude that the polarization characteristics are extremely informative and may be the basis of the process of recognition, monitoring, and classification of various kinds of foliage and grass covers. |
