电子罗盘在全自动智能陀螺寻北仪中的应用

提出了一种电子罗盘取代人工实现粗寻北的方法。根据电子罗盘原理,用DSP从电子罗盘串口实时采集系统与北方向的夹角值,并根据所得角度值驱动系统指向粗北方向,从而代替跟踪逆转点法实现陀螺仪粗寻北自动化。实验结果表明,电子罗盘粗寻北系统提高了机械陀螺仪的粗寻北速度,粗寻北时间由原来的10 min左右减少到1.5 min以内;粗寻北精度可以达到30'以内,满足了中天法精寻北要求。

Application of electronic compass to all automated intelligent gyroscope north finder

To improve the north-finding speed of the traditional mechanical gyroscope, a coarse northfinding method through electronic compass is presented. Based on the principle of electronic compass, the angle values between the north and heading of the system are real-time acquired through tl~e digital port and serial port of the electronic compass using DSP processor, and the heading of the system is driven to the coarse north direction through the acquired angle values. The automatization of gyroscope coarse north-finding instead of the track reversion point way is achieved successfully. Experiments show that the time of coarse north-finding is reduced from 10 min to 1.5 min, and the precision within 30r can reach the requirement of precise north-finding.