面向自由空间光通信波前校正的改进模拟退火算法

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关键词：波前校正；自适应光学；无波前传感;混频效率；误码率中图分类号：0436 文献标志码：A doi： 10.37188/CO.2025-0028 CSTR：32171.14.CO.2025-0028

Abstract： To compensate for atmospheric turbulence-induced wavefront distortion in coherent free-space optical communication， we develop an adaptive optical system based on the improved simulated annealing algorithm. The system seeks to optimize mixing efciency and reduce the bit error rate， ultimately enhancing overall system performance. First， we describe the structure of a coherent optical communication system without a wavefront adaptive optics component， focusing on key parameters such as mixing efficiency and bit error rate.Next， the paper implements a detailed explanation of the working principles of the improved simulated annealing algorithmand its application in adaptive optical systems.To validate the proposed algorithm's effectiveness， numerical simulations are performed and compared against traditional algorithms.Finally，real-world data is collected from an experimental platform to further assess the algorithm's performance.Experimental results demonstrate that， in comparison to the standard simulated annealing algorithm， the improved simulated annealing algorithm reduces the iteration count by 50% ， decreases the bit error rate to 10-9 ， and increases the mixing efficiency to 0.9. Overall，the improved simulated annealing algorithm effectively reduces the iteration count in traditional adaptive optical systems， enhances wavefront correction accuracy， and satisfies communication system requirements.

Key words： wavefront correction; adaptive optics; wavefront sensor-less; mixing efficiency; bit error rate

1引言

在现代通信中，相干自由空间光通信（coher-ent free-space optical communication，CFSOC）与传统的自由空间光通信相比，中继距离更长、灵敏度更高，因此备受关注1。（剩余12335字）