激光在传输过程中会受到大气抖动的影响,大气抖动产生的像差会导致成像面上的光斑弥散和能量利用率下降,从而降低远程声音采集的质量,不利于激光监听技术在实际环境中的应用。以像差为研究对象,研究像差对激光远程声音监听能量利用率的影响,并对此进行了理论推导。分别分析了不同类型、不同大小的单阶Zernike像差和大气湍流对远程声音采集质量的影响,并进行了数值计算。结果表明:不同类型、不同大小的像差对能量利用率的影响不同,能量利用率随着像差的增大而降低;不同大气湍流对能量利用率的影响不同,能量利用率基本上随着D/r₀的增大而降低。本研究为提高远程声音监听质量提供了理论依据和参考。

The laser can be influenced by the atmospheric turbulence during its transmission and this turbulence introduces aberrations which leading to the spot diffusion on the imaging surface and the decrease of energy utilization. Thus, the remote sound collection quality is reduced, which is not conductive to the application of laser eavesdropping in the actual environments. With aberration as the research object, the influence of aberration on the energy utilization in laser remote sound eavesdropping is investigated and the corresponding theoretical deviation is performed. In addition, the influences of single-order Zernike aberrations and the atmospheric turbulences with different types and different magnitudes on the remote sound collection quality are analyzed. Meanwhile, the numerical simulation is conducted. The results show that the influences of aberrations with different types and different magnitudes on energy utilization are different, and the utilization decreases with the increase of aberration. Moreover, the different types of atmospheric turbulences have different effects on energy utilization, and the utilization basically decreases with the increase of D/r0. This study provides a theoretical basis and reference for the improvement of laser remote sound eavesdropping quality.