Description: Possibility of the use size of fractal dimension phase portraits is considered as a sign recognition BPLA of multirotor type. It is rotined that the values of fractal dimensions phase portraits of signals, got at sounding BPLA, differ from the values of fractal dimensions phase portraits base-line signals. The improved method recognition BPLA of multirotor type is offered with the use form phase portraits, built at different times of delay, and sizes their fractal dimensions.

Keywords: pilotless vehicle, pilotless vehicle recognition, fractal dimension, phase portrait