Ground based thermal cameras are used to observe urban surface temperatures (Ts) with an unprecedented combination of: temporal and spatial resolution (5 min ~0.5 m ? 2.5 m), extent (3.9 ha), instrument number (6 static cameras) heterogeneity (mixed high rise vegetation). Unsupervised classification of images by geometry material properties (surface orientation, albedo, solar irradiance, shadow...

Due to a significant increase in the number of spacecrafts low orbit, problem planning observations by radio instruments acquires importance. The paper shows that this can be reduced optimization observation time. Two metrics for plan quality evaluation are proposed (minimum value metric and geometric mean metric). It was suggested 3 algorithms planning: maximization arithmetic mean, minimizati...