Space laser communication anti-atmospheric turbulence polarization diversity receiving device and method

Abstract

The present application relates to the technical field of space laser communication, and particularly relates to a space laser communication atmospheric turbulence polarization diversity receiving device and method, a space laser communication atmospheric turbulence polarization diversity receiving device comprising an optical receiving unit, a signal sensing unit and a dynamic adaptive synthesis unit. The optical receiving unit is used for dividing the received space optical signal into two orthogonal polarization signals, and compensating the polarization state random variation caused by atmospheric turbulence in real time; the signal sensing unit is used for collecting instantaneous power and outputting real-time quality parameters; the dynamic adaptive synthesis unit is used for sending feedback signals to the optical receiving unit, and realizing the maximization output of the synthesized signal signal-to-noise ratio through calculation. The present application solves the polarization state fluctuation and signal deep fading problem of the space laser signal caused by atmospheric turbulence, ensures high-performance receiving, can effectively improve the communication efficiency, and significantly improves the stability of the space laser communication system.

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