根据透镜的傅里叶变换性质,提出了采用光学傅里叶变换加级联光学成像放大并结合有限口径接收的方法来实现自由空间激光光束远距离传输的实验室模拟。由此原理设计了自由空间激光远距离传输模拟装置,该装置主要由大口径、长焦距的傅里叶变换平行光管和三级成像放大镜所组成,最大等效传输距离达2.4×105km,可用于星间激光通信终端综合通信性能的评估,在设定的误码率下测量终端可能的通信距离,或者在设定的作用通信距离下检测通信的误码率。 According to the nature of the Fourier transform of the lens, a laboratory simulation of long-distance transmission of free-space laser beams using optical Fourier transform plus cascaded optical imaging and limited aperture reception is proposed. Based on this principle, a free-space laser remote transmission simulation device is designed. The device mainly consists of a large-aperture and long-focal length Fourier Transform collimator and a three-stage imaging magnifier with the maximum equivalent transmission distance of 2.4 × 105km, In the evaluation of integrated communication performance of an interstellar laser communication terminal, the possible communication distance of the terminal is measured at a set bit error rate or the bit error rate of a communication is detected at a set communication distance.