深空探测光量子通信信道的主要参数

Main Parameters of Laser Quantum Communication for Deep Space Exploration

深空探测器距离地球路程遥远,保持探测器与地面站高效、实时的信息通信,将探测器采集的科学数据及时、完整地传输回地球,是亟待解决的问题。量子通信可以在确保信息安全、增大信息容量以及提高检测精度等方面突破经典通信的物理极限,研究量子通信在深空探测中的应用意义非常。通过对深空量子通信信道的研究与分析仿真,得到光束发射角、接收器口径、收发端距离等与可靠量子通信的关系,为深空量子通信的工程实现提供设计、仿真依据。

The deep space explorer is far away from the earth.It is urgent to solve the problems of keeping efficient real-time communication between the explorer and the ground station,and realizing timely and complete transmission of the acquired scientific data back to the earth.The quantum communication can ensure the information security,increase the information capacity,improve the detection accuracy and break through the classical communication physical limit.Therefor,it is of great significance to study quantum communication applications for deep space exploration.Through the profound study and analysis of quantum communication channel,the emission beam angle,receiver aperture and distance between receiving and transmitting terminals which are critical to the reliable quantum communication can be obtained,which provides a gist for the deep space quantum communication engineering design and simulation.