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首页> 外文会议>SPIE Conference on Free-space Laser Communication Technologies >Modeling and Measurement of Effects of Atmospheric Turbulence and Platform Jitter on Free-space Laser Communication
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Modeling and Measurement of Effects of Atmospheric Turbulence and Platform Jitter on Free-space Laser Communication

机译：大气湍流与平台抖动对自由空间激光通信影响的建模与测量

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摘要

Laser beam propagating through the atmosphere is distorted by atmospheric turbulence and platform vibrations, leading to the reduction of received signals, beam pointing error, and bit-error rate (BER) degradation. Mathematical models of atmosphere and platform vibrations were developed simultaneously to simulate the actual laser communication. A realistic wavefront distortion generated by the Kolmogorov spectrum and McGlamery algorithm was applied with a liquid crystal spatial light modulator (SLM). A disturbance signal implemented by a two-dimensional piezoelectric steering mirror is applied to represent the platform jitter. Experimental results demonstrate how signal to noise ratio ( SNR), BER and pointing error change with the increase of atmospheric turbulence strength and vibration spectrum bandwidth. This paper presents the modeling and measurement of effects of atmospheric turbulence and platform jitter. The distortion compensation and tracking techniques can be tested based on the system.
机译：通过大气传播的激光束被大气湍流和平台振动扭曲，导致接收信号，光束指向误差和误码率（BER）劣化的降低。同时开发了大气和平台振动的数学模型以模拟实际激光通信。通过液晶空间光调制器（SLM）施加由KOLMOGOOROV频谱和MCGLAMERY算法产生的现实波形失真。施加由二维压电转向镜实现的扰动信号以表示平台抖动。实验结果表明，随着大气湍流强度和振动频谱带宽的增加，如何对噪声比（SNR），BER和指向误差发生变化。本文介绍了大气湍流和平台抖动效果的建模和测量。可以基于系统测试失真补偿和跟踪技术。

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