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2013 IEEE International Symposium on Phased Array Systems and Technology
Day recently obtained phase-only element weights for a large transmit array of arbitrary geometry by optimizing complex weights using an objective function that penalized amplitude variation. He used gradient descent modified with a classic SVD technique to create point and sector nulls as desired. Here Day's approach is extended to allow for main-beam broadening as might be needed to illuminate multiple receive beams. This is done by adding a second objective term, one penalizing variation indoi:10.1109/array.2013.6731868 fatcat:4irojk2mtrcf3lq6e4xzggb4ie