论文部分内容阅读
自由空间激光通信APT(Acquisition,Pointing and Tracking)系统主要由粗跟踪系统和精跟踪系统组成,粗跟踪系统主要是完成对目标信号的捕获,以确保入射的信标光在精跟踪控制系统的动态范围内。介绍了粒子滤波在APT粗跟踪系统中的应用,针对粒子滤波在跟踪算法中存在的问题进行了改进,设计了颜色和轮廓双重信息融合的似然模型;为提高目标跟踪算法在异常情况下的有效性,采用了异常检测和恢复策略,并设计了跟踪光斑目标的模拟系统。实验表明:所提出的多信息融合的似然模型跟踪算法在目标尺度变化、背景干扰、姿态变化、部分遮挡等环境下均能稳定地跟踪目标,提高了大气激光通信链路的可靠性。
Free-space laser communication APT (Acquisition, Pointing and Tracking) system consists of coarse tracking system and fine tracking system, coarse tracking system is mainly to complete the capture of the target signal to ensure that the incident beacon light tracking control system in fine tracking dynamic Range. The application of particle filter in APT coarse tracking system is introduced. The existing problems of particle filter in tracking algorithm are improved, and the likelihood model of color and contour information fusion is designed. In order to improve the performance of target tracking algorithm in abnormal situation Effectiveness, using anomaly detection and recovery strategy, and design a simulation system to track the target of flare. Experiments show that the proposed MLM tracking algorithm can track the target steadily in the environment of target scale change, background interference, attitude change and partial occlusion and improve the reliability of atmospheric laser communication link.