红外导引头位标器陀螺的方位效应研究

方位效应是同轴安装式位标器陀螺的一个固有缺点,它会给导引头带来诸多不利影响.文中详细分析了方位效应对陀螺的旋转磁场和进动磁场的影响,指出了方位效应的存在不仅会减小陀螺的有用力矩还会带来通道间的耦合.此外,方位效应还会影响信号的调制和跟踪的性能.给出了三种减小方位效应的方法,并重点介绍了一种新型结构的位标器陀螺,这种结构的陀螺跟踪范围大,方位效应小.

Study on the Azimuth Effect of Seeker Gyro

The azimuth effect is an inherent disadvantage of coaxially installed seeker gyro. In this paper, the influence to spin magnetic field and precession magnetic filed generated by the azimuth effect is discussed in detail, then the fact that the existence of the azimuth effect can not only reduce the useful torque value, it still can bring the seeker coupling of channels is pointed out. Furthermore, the azimuth effect can affect the signal modulation and the performance of the tracking system. Three methods are introduced to attenuate the azimuth effect, especially including a new gyro with larger tracking field and lower azimuth effect.