DEVICE AUTOMATICALLY IDENTIFYING AIR OBJECTS Russian patent published in 1997 - IPC

FIELD: radiolocation, automatic identification of tracked air objects. SUBSTANCE: mix of well known device is supplemented with first and second rectifiers, potentiometric transducer of reference voltage, threshold unit, saw-tooth voltage generator, voltage-controlled generator, third mixer, reference frequency filter, M filters, M amplitude detectors, M-1 dividers, adder and identification unit in order to ensure usage of new information sign of identification which presents sum of relations of levels of spectral components across outputs of adjacent narrow-band filters characterizing degree of brokenness of envelope of secondary Doppler spectrum of reflected signal. Additional positive effect of new arrangement of circuit of device consists in independence of identification sign of range to object and conditions of propagation of radio waves (various levels of attenuation of radio waves in atmosphere). EFFECT: increased probability of correct identification of air objects of various classes flying at various ranges from radar and under various conditions of propagation of electromagnetic waves in apace. 1 dwg