Abstract: The present disclosure relates to a controller (10) for a counter measure system against unmanned aerial vehicles (UAVs), the controller (10) comprising a display device (18) and a processor configured to: receive target position data indicative of a position of a target UAV; receive effector position data indicative of a position of at least one counter measure effectors (12, 14); receive effector orientation data indicative of an orientation of the at least one counter measure effector (12, 14) relative to geographic cardinal directions; determine a field of effect (30, 32) of the at least one counter measure effector on the basis of the effector position data and the effector orientation data, said field (30, 32) of effect being indicative of an area covered by electromagnetic radiation emitted, in use, by the at least one counter measure effector; and, generate a display signal for displaying, on the display device, the position of the target UAV with respect to the field of effect (30, 32) of the at leas

Abstract: Circuitry and a method for correcting errors in binary data which is stored n memory and subject to errors upon recall therefrom. The technique involves generating a redundant byte related to each original byte to be stored, storing both bytes in memory, and applying the recalled bytes to a decoder designed to correct the errors. If more than a single adjacent error per byte is expected, it is necessary to transpose the bits of the original and redundant bytes before storage so that the bits thereof alternate, and re-transpose the recalled bytes to their original sequence before application to the said decoder.