一种新型的大气传输光通信APT系统研究

A Novel APT System for Atmospheric Laser Communication

根据实际应用中对机动式大气传输光通信的要求 ,提出一种新型的大气传输光通信APT系统方案。以小波变换作为对通信对象红外目标进行检测识别的算法 ,搭建了基于FPGA和DSP的红外信号处理和伺服控制的硬件智能控制平台 ,将目标的捕获和图像的处理与伺服控制、精密机械传动等为一体形成大气传输光通信捕获、扫描和跟踪 (APT)系统。该系统在FPGA上实时检测通信对象 ,通过DSP实现ATP算法的控制 ,由伺服精密传动系统实现扫描、捕获与跟踪。

The paper gives a scheme of a novel acquisition, pointing, and tracking (ATP) system for atmospheric laser communication according to the demand for the movable atmospheric laser communication in practice. The wavelet transform as the key algorithm of infrared signal processor is used for detecting and track the target. Based on the FPGA and DSP, the knowledge-control platform to carry out the algorithm and control the servo system is designed. In order to develop the APT system, it is necessary to adopt acquisition of the target, image manage, servo control, and precision machinery transmission. The system can detect the target to communicate with FPGA and implement the APT algorithm using DSP in real time, and complete the APT using the precision servo system.