FIELD: physics.
SUBSTANCE: invention relates to processing radar signals and can be used in aircraft on-board radar station (ABRS) for simultaneous formation when tracking aircrafts of a pair of reliable estimates of their functional purpose (FP) on the principle of master-slave and radial functionally related coordinates (FRC) of mutual movement of these aircrafts and ABRS aircraft-carrier. Method consists in recognition of aircraft FP of pair with simultaneous formation of reliable unconditional estimates of radial speeds of their approach to ABRS aircraft carrier due to combination of information of ABRS and indicator of version of FP of aircrafts of a pair, accounting of a priori data on change of these versions and adaptation of filter to it on the basis of narrow-band Doppler filtration of signal reflected from aircraft of pair flying in closed battle formation (BF), using a fast Fourier transform procedure, generating Doppler frequency counts caused by aircraft gliders reflections, processing Doppler frequency samples and output indicator readings in a multichannel filter for joint tracking of aircrafts of the pair and recognizing a version of their FP, operating in accordance with the procedure for quasi-optimal combined filtration of phase coordinates and recognition of the state of the Markov structure of a linear stochastic dynamic system, operating on the basis of a priori data in the form of a mathematical model of a system of "pair of aircrafts - ABRS indicator" with a random step-like structure, and at the output of which estimations of the version of aircraft FP of the pair, unconditional mathematical expectation of FRC and covariance matrix of their estimation errors are formed.
EFFECT: technical result is higher reliability of evaluation of version of FP of aircrafts of pair and radial speeds of their approach to ABRS aircraft carrier.
1 cl, 1 dwg
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