Target classification method for military applications

摘要

The method involves determining a spectral line in a normalised Doppler spectrum which corresponds to vane frequency of rotating rotor of drive mechanism with turbine blades for classification of a jet aircraft. The spectral lines correspond to the vane frequency are removed from the spectrum resulting in a residual spectrum. The spectrum is then transformed back into the time domain. The time domain spectrum determines the main characteristic using a level threshold and the rotary frequency of the rotor is associated with the curve. The vane number of the rotor is determined by forming the quotient of the vane frequency and the rotary frequency. The vane number is used to form a classification parameter for the jet.