采用多经纬仪的红外多目标实时跟踪系统设计

The Design of a Infrared Multi-targets Real-time Tracking System Based on Two Theodolites

针对靶场测量中包含较多目标的跟踪且目标容易丢失问题,提出一种多经纬仪、大视场的协同跟踪系统。该系统拟以Xilinx公司的Virtex5系列FPGA与TI公司TMS320C6455型高速DSP为核心处理器,采用一片FPGA作图像拼接融合决策器控制两台经纬仪达到扩大视场的目的。依据主视场得到目标俯仰方位以及灰度等特征,由决策器控制分视场对丢失目标进行协同跟踪,并将两台经纬仪的图像进行拼接融合,达到大视场、多目标实时跟踪的目的。通过具体实验表明,该系.统适用于目标分散、目标涵盖区域较广的多目标跟踪问题,在分辨率640×512、镜头焦距220mm条件下,单个经纬仪可获得方位2°,俯仰2.5°的视场。本系统能达到的视场为方位3.6°,俯仰2.5°,跟踪效率高且能满足系统实时性的要求。

To resolve the problems that many targets have to be tracked and the targets are easy to lose in shooting range measurement, a synergistic tracking system which is of many theodolites and field of view is proposed.. The platform is consisted of Virtex-5 FPGA of Xilinx and high-speed multi-core DSP TMS320C6455 of TI , with a FPGA used as the controller of im- age splice and integration to control two theodolites and enlarge the field view. Characteristics of targets＇ angle of pitch and gray level are acquired from the main field view, and the lost targets are tracked with the controller coordinatively from field view, and images from two theodolites are spliced and integrated, through which the goal of multi-field view and targets real-time tracking is achieved. Detailed experiments results indicate that this system is suitable for multi-targets tracking, in which occasion the targets are disperse and the distribution covers a wide area. The tracking efficiency is high enough for the real-time performance of the system.