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为了在激光大气传输四维数值模拟中考虑激光光束抖动带来的影响,推导了光束抖动倾斜角与Zernike多项式低阶项系数之间的关系,提出了一种激光传输光束抖动效应的数值模拟方法。为验证该数值模拟方法的正确性,针对均匀聚焦光束,计算了大气湍流与抖动效应综合作用下长期光束扩展角半径,数值模拟计算结果与理论公式计算结果基本一致,验证了激光传输抖动效应数值模拟方法的正确性。
In order to consider the effect of laser beam dithering in four-dimensional numerical simulation of laser atmospheric transmission, the relationship between the beam jitter tilt angle and the low-order term coefficients of Zernike polynomials is deduced. A numerical simulation method of laser beam jitter is proposed. In order to verify the correctness of the numerical simulation method, the angular expansion of long-term beam under the combined effect of atmospheric turbulence and jitter is calculated for the uniformly focused beam. The results of numerical simulation are in good agreement with the theoretical calculation results. The numerical simulation of the laser jitter effect The correctness of the simulation method.