空间光通信系统中的目标快速捕获方法

Fast target acquisition method in space optical communication system

在空间光通信系统中受到快速运动目标的多径效应影响,导致目标的准确识别和捕获性能不好,为了提高空间光通信系统中的目标快速捕获能力,提出基于波束形成和分集均衡技术的空间光通信系统中的目标快速捕获方法。构建空间光通信系统的分集信道均衡模型,根据目标的快速运动特性进行空间波束形成,提取目标的运动变化的空间分布特征量,采用波束形成算法进行目标方位参量估计和频率参量估计,实现目标的准确定位识别,完成目标快速捕获。仿真结果表明,采用该方法进行空间光通信系统中的目标捕获的准确性较高,实时性较好,抗干扰能力较强。

In order to improve the ability of fast target acquisition in space optical communication system, the multi-path effect of fast moving target affects the accurate recognition and capture performance of target. A fast target acquisition method based on beamforming and diversity equalization is proposed. The diversity channel equalization model of spatial optical communication system is constructed, and the spatial beamforming is carried out according to the fast-moving characteristics of the target. The spatial distribution characteristic of target motion change is extracted, and the azimuth parameter estimation and frequency parameter estimation of target are carried out by beamforming algorithm. The accurate location and recognition of target are realized, and the fast target capture is accomplished. The simulation results show that, the method is accurate, real-time and anti-jamming in the space optical communication system.