GROUP TARGET RECOGNITION METHOD AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2013 - IPC G01S13/53 

FIELD: radio engineering, communication.

SUBSTANCE: method involves emission of electromagnetic energy towards a target and receiving signals reflected from the target, performing narrow-band filtration of component frequencies of the Doppler spectrum of the reflected signal, measuring Doppler frequency Δf_i of each spectrum component of the reflected signal according to the filter number, determining angular coordinates Δφ_i of each spectrum component of the reflected signal, determining characteristic velocity of each shining point on the detected target using the expression $$V_i=\frac{\Delta f_i\lambda }{2\cos \Delta {\phi }_i},$$ where λ is the wavelength of the emitted signal, comparing the obtained characteristic velocity values of each shinning point in accordance with the expression ΔV_i=|V_i-V_i+1|, if ΔV_i≥U, where U is a threshold value, the signals belong to one target; further determination of a group target based on comparing the obtained characteristic velocity values of each shining point in accordance with the expression ΔV_i=|V_i-V_i+1|, wherein if ΔV_i≥U₁, where U₁ is a threshold value, the signals belong to a group target.

EFFECT: higher information value.

2 cl, 1 dwg