“…Here, we consider only two target acquisition features: its location and velocity vector. This is because, the other signatures are rather easy to recognize, while the target location is a primary feature that allows to determine its size and aspect ratio, through a standard imaging equation applied to a TV camera sensor [11] . Of course, target's location can also be found by non-imaging sensors, such as range finders, mostly acoustic and laser-based [12] , but they are rather expensive, especially the laser ones, while acoustic range finders are applied for rather sort distances [12] .…”