研究目的
Investigating the optimization of beamforming for time-modulated circular-aperture grid arrays using differential evolution algorithm to achieve desired array patterns with low sidelobe and nulling levels.
研究成果
The differential evolution algorithm effectively optimizes the beamforming of circular-aperture time-modulated arrays, achieving low sidelobe and nulling levels while suppressing unexploited sidebands. The method demonstrates potential for applications requiring precise beam control with limited dynamic range.
研究不足
The study is limited to simulation results and does not include physical experimentation. The dynamic range of amplitude weighting and time modulation pulse width is constrained to 10dB, which may limit performance in some applications.
1：Experimental Design and Method Selection:
The study employs differential evolution algorithm for optimizing amplitude weight and time modulation pulse width of the array.
2：Sample Selection and Data Sources:
The research focuses on circular-aperture grid arrays, specifically triangular-grid arrays.
3：List of Experimental Equipment and Materials:
Simulation codes are written in Matlab.
4：Experimental Procedures and Operational Workflow:
The method involves decomposing the equivalent weighting into two independent components in horizontal and vertical directions to simplify the optimization process.
5：Data Analysis Methods:
The performance is evaluated based on sidelobe level, nulling level, and suppression of unexploited sidebands.
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