Abstract
The mathematical model of coherent combination for rectangle beams array is established. Experimental results of Northrop Grumman Corporation are analyzed, such as two beam combination, four beam combination, eight beam combination. Then applying this model, it is simulated on the computer that intensity distribution of combined far-field spots changes in various conditions. Results show that aperture filling method determines the figure of far-field spots, and interval among beamlets determines distribution of energy and number of diffraction ring, and some useful results are obtained with Power-in-the-bucket calculation. The simulated results show, Power-in-the-bucket of far field spot descends with increasing distance among beamlets and number of beamlets.
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