Electric scanning self-tracking method for dynamic target by digital multi-beam phased-array antenna
A phased array antenna and digital multi-beam technology, which is applied in the field of aerospace measurement and control, can solve the problems of improving antenna beam grating lobes, and achieve the effect of simple implementation method, low hardware resource consumption, and saving hardware resources and hardware costs
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[0013] refer to figure 1 . According to the present invention, in the angle tracking system of the multi-beam phased array antenna, the front of the multi-beam phased array antenna and the radio frequency front-end, with the beam pointing to the target as the center, circularly scan the four angles deviating from a δ angle according to the azimuth and elevation directions. Symmetrical point, the digital beam is used to conduct off-axis conical electronic scanning of the tracking target, and the beam electronic scanning control is carried out. The digital beam forming DBF unit uses the downlink digital beam forming DBF channel to receive the digital multi-beam phased array antenna front and send it to the RF front end. The digital signal that comes down is controlled by beam electronic scanning, and according to the beam pointing and forming sum and difference signals, azimuth and elevation difference beam signals are generated, and the sum and difference signals formed by the ...
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