平面阵列多元相干相位调制的数值模拟

摘要

For any position in far field, phase modulation model of plane matrix multiple coherence is set up, and oscillation characteristic of plane matrix multiple coherence based on phase modulation is discussed for coherent unit in different array forms. The coherence effect of two-dimensional matrix form is com- pared with that of one- dimensional form. Simulation results indicate that relative coherence intensity is maximized when the array of coherent element is two-dimensional matrix and space between columns equals to space between rows. The width of oscillation peak is maximized in square array, while the width of oscillation peak is minimized in one-dimensional array.%对于远场任一固定点，建立了平面阵列多元相干的相位调制模型，讨论了相干元不同排列形式时多元相干相位调制的振荡特性，并把二维阵列排列与一维排列的相干效果进行对比。数值模拟结果表明，相干元为二维阵列排列，且当列间距等于行间距时，相干相对强度最大。方阵排列时，振荡峰值宽度最大，一维排列时，振荡峰值宽度最小。