The performance of a laser weapon system based on coherent beam combining (CBC) depends on its propagation properties in the atmosphere. In this study, an analytical model based on partial coherent beam combining (PCBC) for assumed coherence coefficients between beams in a CBC lattice was developed. The Kolmogorov model of atmospheric turbulence and the Hufnagel-Valley model of C_n² dependence on atmospheric parameters were implemented. Novel simplified metrics were proposed to assess the CBC performance. Several beam profiles (super-Gaussian, truncated Gaussian, etc.) and geometries were analyzed in terms of maximal intensity in the far field. An approximate formula for PCBC efficiency dependent on the Fried radius was proposed. The results of CBC modeling were compared to those of the Gaussian beam propagation model in a turbulent atmosphere. The dependence of CBC performance on the C_n² parameter, range, and elevation angle was analyzed. It could be concluded that the application of CBC for medium and long range propagation is impractical without an effective adaptive optics system.

基于相干光束组合 (CBC) 的激光武器系统的性能取决于其在大气中的传播特性。在这项研究中，开发了一种基于部分相干光束组合 (PCBC) 的分析模型，用于假设 CBC 晶格中光束之间的相干系数。大气湍流的 Kolmogorov 模型和C _n ²的 Hufnagel-Valley 模型实现了对大气参数的依赖。提出了新的简化指标来评估 CBC 性能。根据远场中的最大强度分析了几种光束轮廓（超高斯、截断高斯等）和几何形状。提出了依赖于 Fried 半径的 PCBC 效率的近似公式。将 CBC 建模的结果与湍流大气中的高斯光束传播模型的结果进行了比较。分析了CBC性能对C _n ²参数、范围和仰角的依赖性。可以得出结论，如果没有有效的自适应光学系统，将 CBC 应用于中长距离传播是不切实际的。