无线光通信GPS辅助定点捕获实验研究

Research on Fixed-point Acquisition in Optical Communication Based on GPS

针对无线光通信对快速、精准的光束对准技术需求,为减小系统链路建立时间,增加捕获可靠性,提出将GPS技术应用于光通信实验系统中。以TMS320F2312为控制核心,可根据实时GPS坐标解算出需调整的方位及俯仰角,进而驱动二维转台完成初始捕获,据此进行了多次初始捕获实验。结果表明,采用GPS导航定位技术,可快速实现信标光的初始捕获,且具有较高的捕获成功概率。

According to the need of quick and accurate pointing of laser beam for free-space optical communication, the GPS technology is applied in the optical communication for reducing the setting time of communication link and increasing the acquisition reliability. TMS320F2812 as the control core can calculate the horizontal- and vertical- angles needed to adjust according to the GPS coordinate and then can drive the two-dimensional turntable to finish the initial acquisition. Acquisition experiments were carried out and the results show that quick acquisitions can be achieved with a high probability of success.