Method and device intended to avoid the shots fired defective apparatus for automatic

摘要

Before detection, it sweeps and memorized the firing field, namely the firing area and the horizon of firing, after locating the object 31, and when that - latter approach of the horizon of firing, it sweeps and memorized the horizon line in the surround notes acoustically of the object 31 for detection the presence of the object by the difference between the back - plane 30 and the object is assumed, finally, it acts in same way on a larger surround in order to obtain the silhouette of the object in view of the apparatus and trigger the firing. / p & & p & the invention, in particular mines interested a distance.