摘要
波门跟踪是提高基于图像等信息实现跟踪的光电平台跟踪精度的有效方法。探讨了脱靶量预测、图像传感器滞后和伺服系统动态精度对波门跟踪的影响。针对一类匀速运动目标,建立了基于图像处理信息和伺服系统反馈信息的目标空间角运动模型,利用最小二乘法获得目标角运动参数的估计,同时推导了目标图像脱靶量的预测公式,结合目标运动预测,完成了自适应波门的设计。最后给出了常规波门和自适应波门的工程跟踪实验,结果表明,文中所提方法创新定性地定量分析了波门跟踪技术在工程实践中的问题,解决方案完整且在工程实验中得到了检验,提高了跟踪的稳定性和系统的实时性。
The window-tracking is an effective way to improve the tracking-precision of electro-optical tracking and pointing platform in which the image information is used. The effect of miss-distance′s prediction,image-sensor′s delay and servo system′s dynamic precision were discussed. A target′s angular-motion model with the target image information and servo system′s feedback information was built for a class of uniform motion targets. The target′s angular-motion′s parameter was estimated by the LSM algorithm and the miss-distance′s prediction formula was derived. Furthermore,the design of adaptive windows was obtained with the target motion simulation. The ideal tracking-window was gained when the prediction of target motion was also added to the design. Finally,the engineering experiment about the conventional and adaptive window-tracking was presented to prove this method′s feasibility. The result shows that the design of this tracking-window can keep up with the target′s motion tightly,and the stability and system′s real-time performance are improved effectively. It is an innovation that the window-tracking technology′s problem in engineer is discussed in qualitative and quantitative analysis. The proposed method improves the stability of tracking and real time property of system.
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第4期602-606,共5页
Infrared and Laser Engineering
基金
兵器科技预研先研究资助项目(404050201)
关键词
光电跟瞄平台
波门跟踪
脱靶量
最小二乘法
Electro-optical tracking and pointing platform,Window-tracking,Miss-distance,LSM
