聚焦强激光束大气传输的数值模拟

 用非自适应坐标变换技术求解聚焦强激光束大气传输的热晕问题，实践表明对提高计算精度和速度十分有效，但在焦平面附近的计算，由于热晕的散焦作用，原有技术有一定困难。通过提出一种改进的非自适应坐标变换技术，克服了原有变换的缺陷，有效提高了计算精度和速度，并减少了计算机内存的占用。

NUMERICAL CALCULATION OF FOCUSED HIGH POWER LASER BEAMS PROPAGATION IN THE ATMOSPHERE

Nonadaptive coordinate transformations are applied to the basic equations for the simulation of thermal blooming of focused high-power beams propagation trough the atmosphere in the report.The results show that the accuracy and speed of the computation can be improved efficiently. But it is difficult to calculate the field near the focal plane because of the defocusing of the thermal bollming.A modiffied nonadaptive changes are presented in the paper which overcome the disadvantage of the old nonadaptive changes, and has proved to be more efficien in the improvement of accuracy and speed of computation, and reduction of computer's memory.