| 摘要 |
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 ?fof each spectrum component of the reflected signal according to the filter number, determining angular coordinates ??of each spectrum component of the reflected signal, determining characteristic velocity of each shining point on the detected target using the expressionwhere ? is the wavelength of the emitted signal, comparing the obtained characteristic velocity values of each shinning point in accordance with the expression ?V=|V-V|, if ?V?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 ?V=|V-V|. If ?V?U, where Uis a threshold value, the signals belong to a group target; the number of targets in the group target is determined based on comparing velocities of shining points of targets with threshold values in accordance with the expressionwheredenotes threshold values which are determined based on distances travelled by targets in the group and respective velocities of shinning points of different targets.EFFECT: higher information value.2 cl, 1 dwg |
