主要从激光光学的相关理论出发，通过数值模拟的方法，计算激光相干合成的远场光强分布。文中对不同大小的正方形、正六边形、圆形阵列排布，在不同的距离上的合成效率进行了计算、分析和比较。结果表明，正六边形的合成效率是最高的，而正方形与圆形的合成效率相近。可以通过增加光束数的途径提高合成效率，但当光束数已经很大的情况下，效果不明显，但增大阵列可以减缓合成效率随传播距离而下降的速度。

Starting with the related theory of laser optics, the intensity distribution in the far-field is calculated by using the method of numerical simulation. Aiming at the square array, regular hexagon array and circular array with different sizes, the combing efficiency in different distances is calculated, analyzed and compared. The results show that the regular hexagonal arrangement has the highest combining efficiency, the square and the circular arrangement has the similar combining efficiency. By increasing the beam numbers, the combining efficiency can be improved. In the case of the large beam number, the effect is not obvious, but the increasing array can reduce the decreasing effciency speed due to the propagation distance.