摘要
武器飞行试验中,初始段的弹道参数主要依靠光电经纬仪两站交会定位,平滑(滤波)求速获取。速度参数的精度高度依赖定位的精度。在现有定位模型的基础上,通过函数误差传递关系,推导了弹道参数的误差表达式。分析了误差来源和典型情况下的误差情况,提出了在不等精度经纬仪交会测量中,实时确定两台光电经纬仪在解算结果中的权重,动态改变权值的方法。仿真结果表明:在不等精度光电经纬仪交会定位情况下,该方法能够提高两站定位的精度。
The trajectory parameters are obtained mainly dependent on intersection measure of two photoelectrical theodolites and smooth filtering, during the flight test. The precision of velocity is closely related to the position error. The error equa- tion of the trajectory parameters is developed by the relationship of the error transmission function based on the intersection model. A method of real time dynamic weight during intersection measure of two unequality precision theodolites is presented. The simulation results show that the coordinate measurement accuracy is obviously improved with this method.
出处
《光学与光电技术》
2008年第6期51-54,共4页
Optics & Optoelectronic Technology
关键词
光电经纬仪
权值
目标定位
交会测量
photoelectric theodolite
weight
target locating
intersection measure
