Description: Possibility of the use form of phase portraits is considered as sign recognition UAV of multirotor type. It is rotined that the form of phase portraits signals, got at sounding of UAV, differs from the form of phase portraits base-line signals. However at sounding hanging up and locomotive BPLA form of phase portraits signals does not differ practically. It is set that distinction in character motion UAV it is possible to define on an extent and periodicity of appearance characteristic phase portraits.
Keywords: drone, UAV detection, pseudophase plane, phase portrait