Abstract: The invention consists of an apparatus (1) and a method for receiving satellite positioning signals, wherein said apparatus (1) comprises an antenna array (2) comprising at least two antennae (21a,21b,21c,21d) that can receive satellite positioning signals generated by at least one constellation of artificial satellites (C), and at least two phase shifters (22a,22b,22c,22d) positioned downstream of said antennae (21a-21d), wherein the outputs of said phase shifters (22a-22d) are connected to each other by means of an output collector (23), which can be put in communication with a positioning device (4), and wherein in the output collector constructive interference can be generated between the satellite positioning signals and/or disruptive interference can be generated between the reflections of said satellite positioning signals and/or between signals coming from sources located in positions other than those of the satellites of said constellation of artificial satellites (C).

Abstract: System for the disinfection of agricultural soil includes an electric energy source, at least one radiofrequency or microwave generator connected to the electric energy source and arranged to convert the electric energy into electromagnetic power and a plow-like electromagnetic applicator connected to the radiofrequency or microwave generator via wave-guiding lines, the plow-like electromagnetic applicator being arranged to be inserted into the soil so as to transmit the electromagnetic power to the soil, thus obtaining a disinfection of the soil.