空间激光通信中ATP系统光斑检测方法研究

ATP System Spot Detecting Method in Space Laser Communication

无线激光通信是利用激光作为载波,通过空间传播信息的一种形式。高精度、高自动化的ATP技术是关系到空间光通信链路能否成功建立以及通信质量好坏的关键技术之一。分析了四象限技术检测技术和面阵CCD检测技术,给出了具体光斑中心的算法,仿真结果表明,对于QD检测,为了抑制背景光可采用音频调制;对于面阵CCD检测,可采用空间滤波消除背景光影响,为光通信链路的建立奠定了基础。

Wireless laser communication is a new form of communication in which information is promulgated through space and the laser is used as carrier wave. The ATP technology with high-precision and high-automation is one of the key techniques, which can be related to the success of creating the space optical communication link and the quality stand of communication. It is analyzed the four-quadrant detection technology and area array CCD detection technology, gave the specific calculation algorithm of the spot center and dew the relevant conclLlsions through simulations. The simulation results show that, for QD detection, in order to restrain the background light can be used for audio modulation~ CCD array detector, using spatial filtering to eliminate the influence of background light, and then laid the groundwork for the establishment of optical communication link.