防空兵被动测距方法研究

Study on Air Defense Force Passive Ranging Method

防空兵双活动平台被动测距方法采用带码盘和CCD的结合,依据"双站交会"原理完成距离计算,利用软件系统对单帧视频数据中的弹、目距离进行准确求取。从其误差曲线对比可知,对各型测距模型运用中,保持光学视场轴中心与目标之间方位、高低夹角在π/4时,系统精度最高。从各种测距模型曲线绘制图显示可知,基线测量精度对系统影响较小,测角误差才是系统测距误差的主要误差源。

The passive ranging method of air defense forces＇ dual movement platform adopts the combination method of code disc and CCD. Based on ＂dual platform combination＂, calculate the ranging. Use software system to calculate distance between bullet and target of single frame video data. According to the error curve contrast and use of each kind of ranging model, the system precision is the highest when orientation and discretion angle between optical field axis corner and target is π/4. From the ranging model curve figure, it is known that the influence of baseline measurement precision on system is small, and the measure angle error is the main error source of system ranging error.