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The application of ultrawideband signals and large apertures provides a high detailed radar image, where a vast majority of terrain objects may be considered as spatially distributed. The examples of such spatially distributed targets are different types of agricultures, forests, infrastructural objects, which could be recognized against the background of vegetation or bare soils. Another example of a spatially distributed target are ships and glaciers against the background of the water surface. The main purpose ...

A problem of presence or absence small changes determining on the reflecting surface during the observation session is often occurring while solving many problems of space monitoring. Examples of such problems are the ice situation forecasting, emergencies forecasting and detecting (i.e., fires, floods, landslides, mudflows, etc.), detection of forest areas unauthorized logging, forecasts of agricultural yields, analysis the sea surfaces, and many others. For reliable detection in reviewed situations, they recomme...

The key objective of modern vision systems is the problem of a signal class determining since the signal features are completely determined by the type of underlying surface relative to which the observation is made. In spite of the fact that at present there are a huge number of analytic methods for the solving the indicated problem, in the vast majority of tasks based on natural images, capacities of solving it are characterized by the probabilities of erroneous and proper decisions. The exact analytic probabili...