大气光通信中大气湍流影响抑制技术研究进展

大气湍流导致大气光通信链路的误码率上升。湍流影响抑制技术的研究成果有利于提升大气光通信的性能，提高链路的通信速率及距离。首先总结了大气湍流对光通信影响机理的最新研究成果，指出了不同大气湍流效应对光通信的影响形式，其中包括光强闪烁、光束漂移、到达角起伏、相位起伏、光束扩展等。综述了大气湍流影响抑制技术的研究动态和新进展，并根据抑制技术原理的不同，详细地论述了大孔径接收、分集、部分相干光传输、时域处理与阈值优化、自适应光学等技术。从抑制原理和效果出发，对各种大气湍流影响抑制技术进行了分析和讨论，最后简述了进一步开展工作的方向。

Research Progress of Mitigation Technologies of Turbulence Effects in Atmospheric Optical Communication

Atmospheric turbulence causes the increases of bit-error-rate (BER) in atmospheric optical communication links. Mitigation technologies of turbulence effects can be used to improve the perfor-mance and enhance the data-rate and communication distance of optical communication. The latest mechanism researches of turbulence effects on optical communication were briefly summarized, and the various influences of turbulences on that were described, such as intensity scintillation, beam wander, angle-of-arrival fluctuation, phase fluctuation, beam spreading, etc. The development of mitigation technologies of turbulence effects was summarized. Based on different principles, various mitigation technologies were described m detail, such as large aperture receiver, diversity, partially-coherent- beam propagation, temporal-domain processing & threshold optimization, adaptive optics, etc. Focus?ing on their principles and impacts, various mitigation technologies were analyzed and discussed. Last?ly, the future research directions were given.