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Time modulation is explored as a tool for inexpensive sidelobe blanking in a digital beamformer. Rapid switching of the steering coefficients encodes acquisition and sidelobe suppression beams within a single output during beamforming so that they are separable by a synchronized decoder. The computational cost is the same as traditional beamforming, making this method advantageous versus other sidelobe...
Time-modulation is applied to an array pattern by alternating a beamformer between two sets of beamforming coefficients. These are selected so signals arriving in the sidelobes are BPSK modulated by the beam-switching while signals in the main lobe are not. This technique enables sidelobe blanking using a single beamformer, which is simpler than other approaches.
Time modulation is applied to an array pattern by alternating a beamformer between two sets of beamforming coefficients. The coefficients are selected so signals arriving in the sidelobes are BPSK modulated by the beam switching, while signals arriving in the main lobe are not. This technique permits sidelobe blanking using a single beamformer, which is simpler than other approaches. Methods of array...
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