摘要
从星地相干激光通信链路预算方程出发,分析了通信系统各参量对激光链路的影响,从系统各单元的性能参数分配和优化出发,验证了5Gbps星地相干光通信实验的可行性。分析了相干外差探测中混频效率表达式。仿真结果表明,采用自适应光学能有效地提高相干混频效率。
Starting from the budget equation of satellite-to-ground coherent laser communication link, the effect of the each pa- rameters of communication system to laser link is analyzed, and starting from the performance parameters allocating and optimizing of the each units of the system, the feasibility of sateUite-to-ground coherent laser communication experiment in 5Gbps is verified. Fi- nally, the frequency mixing efficiency expression in Coherent heterodyne exploration is analyzed. The simulated results show that the coherent frequency mixing efficiency can be effectively improved by using adaptive optics.
出处
《自动化信息》
2012年第5期35-36,29,共3页
Automation Information
关键词
相干激光通信
链路预算
自适应光学
相干混频
Coherent Laser Communication
Link Budget
Adaptive Optics
Coherent Frequency Mixing