飞机-地面间激光通信天线的初始对准

Initial alignment of antenna for laser communication system between aircraft and ground station

提出了对飞机-地面间激光通信系统天线视轴进行初始对准的方法。论证了系统的硬件组成和算法原理,对实验数据进行了分析。应用GPS、INS等器件测定通信双方的位置、姿态等参数,通过坐标转换矩阵解算了通信双方互指的方位角和俯仰角。给出了距离为12.5 km两个通信点上的模拟初始对准实验数据,实现了视轴初始对准,确定了捕获不确定区域大小为35 mrad。实验表明,该系统可实现通信视轴初始对准,为天线扫描打下基础。

In order to solve initial alignment of antenna for laser communication system between an aircraft and a ground station, the composition and algorithm theory of an antenna alignment system were demonstrated in detail, and the experimental data were analyzed. The parameters of position and attitude of communication terminals were obtained using GPS, INS and etc, the azimuth and elevation essential to antenna alignment of two terminals were obtained by coordinate conversion. By doing an experiment between two pots of 12.5 km distances, the data of initial alignment of antenna were given, and the initial alignment of antenna was completed. Experiment shows the area of uncertainty is 35 mrad, which will be the foundation of antenna scanning.