磁光调制方位传递系统中,交变电流驱动内置磁光材料的螺线管磁场至关重要,直接关系到方位信息的传递精度。研究了交变电流驱动的螺线管内磁场对方位信息传递精度的影响。首先,利用麦克斯韦方程构建空心螺线管电磁场模型,分析驱动信号频率对磁场的影响;然后结合安培环路定律建立内置磁光材料的螺线管内部磁场模型;最后分析无松弛极化介质、松弛极化介质、驱动信号频率等对系统方位传递精度的影响。结果表明:驱动信号频率是影响系统方位传递精度的重要因素,且方位传递误差存在规律性;无松弛极化介质与松弛极化介质对系统方位传递精度的影响程度相当。该结果为研究磁光调制方位传递系统的方位传递精度与系统优化设计提供了参考。

In the azimuth transfer system based on magneto-optical modulation, the magnetic field of a magneto-optic material based built-in solenoid driven by alternating current is very important and directly related to the azimuth transmission accuracy. This paper presents the effect of the solenoid paraxial magnetic field driven by alternating current on the azimuth transmission accuracy. First, an electromagnetic field model of a hollow solenoid is constructed using the Maxwell equation, and the influence of the driving signal frequency on the magnetic field is analyzed. Then, a magnetic field model of the built-in solenoid based on magneto-optic material is established according to the ampere loop law. Finally, the effects of a non-relaxation polarization medium, a relaxation polarization medium, and driving signal frequency on the azimuth transmission accuracy are analyzed. The results demonstrate that the driving signal frequency is an important factor affecting the system azimuth transmission accuracy, and the error of the azimuth transmission is regular. The effects of the non-relaxation and relaxation polarization media on the system azimuth transmission accuracy are similar. We expect that these results will provide a reference for further analysis on azimuth transmission accuracy and system optimization design.