天空背景光对空间激光通信系统的影响

发布时间：2018-06-29 22:49

本文选题：光通信 + 背景光　；参考：《激光与光电子学进展》2017年07期

【摘要】：为了分析天空背景光对空间激光通信系统的影响情况,同时为通信链路总体方案的设计提供相应的参考数据,建立了天空背景光噪声模型并进行理论分析和仿真研究。仿真结果表明:天空背景光会引起粗、精跟踪单元所使用探测器的信噪比下降,导致跟踪精度降低,增加了通信系统的误码率。根据系统的性能指标,合理地选择通信波长,采用小口径、窄带宽的光学系统,并选择最优的天顶角和通信时段,可有效降低天空背景光对系统性能的影响,以满足通信链路的任务要求。
[Abstract]:In order to analyze the influence of sky background light on the space laser communication system and to provide the corresponding reference data for the design of the overall scheme of communication link, the noise model of sky background light is established, and the theoretical analysis and simulation research are carried out. The simulation results show that the sky background light will cause coarse signal to noise ratio of the detector used in the fine tracking unit, which will lead to the decrease of tracking accuracy and increase the bit error rate of the communication system. According to the performance index of the system, the influence of sky background light on the system performance can be effectively reduced by selecting the communication wavelength reasonably, adopting the optical system with small aperture and narrow bandwidth, and selecting the optimal zenith angle and communication period. To meet the task requirements of the communication link.
【作者单位】：长春理工大学空间光电技术研究所;长春理工大学空地激光通信技术国防重点学科实验室;
【基金】：国家自然科学基金(91438204)
【分类号】：TN929.1

【相似文献】