the form of electrical or computer signals the processor unit 50 is provided with a storage unit 52 by way of example the storage unit 52 possesses a plurality of memories 53 and in particular a non volatile memory storing instructions for executing and a volatile memory storing data resulting from measurements or settings input by an individual furthermore the processor unit 50 is provided with a computer unit 51 this computer unit may include at least one processor or the equivalent the processor executing instructions stored in the storage unit 52 in particular on receiving an order from a pilot the processor unit 50 transmits orders for switching the light generator 15 off or on by way of example a pilot may use a button for switching the light generator 15 off or on by way of example the processor unit then operates a switch of the electrical power supply system 16 likewise the processor unit 50 can transmit orders to the light generator 15 in order to adjust the light intensity of the projected light shape 91 so as to avoid dazzling any individuals present on the ground 200 the processor unit then controls the light sources 17 e g so as to reduce or increase the intensity of the light generated by at least one light source in addition the processor unit can transmit orders to the spatial image encoder 35 and or to the zoom device 40 in order to project the projected light shape 91 onto the ground for this purpose the processor unit 50 is connected to a.