论文部分内容阅读
针对湍流大气光传输特性,研究分析了一种光学阵列接收天线的特性。光学阵列接收天线在光路上使用移相器和耦合器等光学元件对光信号进行处理合并,使天线的输出信号的信噪比最大;根据对天线分析计算得到的信号分布特点,在天线合理分配安装和使用小尺寸透镜时,可增大光学系统视场角。经过仿真计算,与单透镜在相同接收条件下的接收端信号的信噪比和视场角的变化进行了对比分析,结果表明,采用光学阵列天线可以在光链路上有效提高空间通信的信噪比和增大光学接收视场角。
Aiming at the characteristics of turbulent atmospheric light transmission, the characteristics of an optical array receiving antenna are studied. The optical array receiving antenna uses optical elements such as phase shifters and couplers to process and combine the optical signals in the optical path so that the signal-to-noise ratio of the output signal of the antenna is maximized. Based on the signal distribution characteristics analyzed and calculated by the antenna, When installing and using small-size lenses, the optical system can increase the field of view. After simulation, the signal-to-noise ratio and the change of the angle of view of the receiver signal under the same receiving condition with the single lens are compared and analyzed. The results show that the optical array antenna can effectively improve the space communication signal Noise ratio and increase the optical receiving angle of view.