A Robust Constant Beamwidth Wide-Beamforming Algorithm
The proposed algorithm addresses limitations in conventional wideband beamforming techniques caused by mismatched guiding vectors.It begins by creating a diagonal loading function related to the snapshot count.Then,it estimates the actual incident direction of the desired signal through the directional error range of the incident signal.The optimized beam weighting coefficients are generated by combining the constructed diagonal loading coefficients.Finally,these optimized beam weighting values,along with the FIR filter coefficients,solve for the global optimal design of the broadband beam response.Simulation results confirm that compared to traditional time-domain wideband beamforming,this approach achieves a more consistent broadband main lobe response and reduced side lobe levels.Moreover,it maintains a higher output signal-to-noise ratio even in scenarios with mismatched desired signal-oriented vectors.
constant beamwidth beamforminggeneralized linear combinationglobal optimization designFIR filter design
NETL
NSTL
万方数据
