基于无人机的系统定北方法研究

The Design of A Hot Standby Software System Based on Multicast Mechanism

系统定北是雷达系统的必备功能,常用的手段是利用寻北仪、光学定北、双GPS定北等。文中提出一种基于无人机系统的雷达定北方法,该方法利用无人机系统上带的全球定位系统采集的经纬度信息,通过将地球坐标系转换为站心直角坐标系统,从而算出目标相对正北的夹角,作为真值,通过不同方向的多次采集,统计出方位相对正北的偏差。该方法使用简单,操作方便,精度满足系统定北要求,可以作为雷达系统定北的有力补充手段。

System north determination is an essential function of radar system,and the commonly used means are using north finder,optical north determination,double GPS north determination and so on. A north determination method is proposed based on unmanned aerial vehicle( UAV) system,which adopts unmanned aerial vehicle system with global positioning system( GPS) acquisition of latitude and longitude information,by converting the earth coordinate system stand heart rectangular coordinate system,so as to calculate the target relative angle between true north as a true value. Through different direction of collection for many times,the statistics orientation is relative to the deviation of due north. This method is simple to use,easy to operate and can be applied as a powerful supplementary method for radar system.