利用具有长期稳定特性的地磁场矢量信息,可以实时测量弹箭的滚转姿态角。文中建立了弹载地磁测角装置比较完备的理论模型,并进行了初步的仿真分析。理论模型可作为测角装置硬件设计、装置调试校准、DSP算法设计的参考。仿真结果表明,对于不同的作战使用环境,地磁数字信号特征有明显的差异,结构安装误差对弹载地磁测角装置的测角精度有较大的影响。

The roll attitude angle of projectile and rockets could be measured in real time using geomagnetic field vector information with long-term stability characteristics. In this paper, the theoretical model of the missile borne geomagnetic angle measuring device was established, and the preliminary simulation analysis was carried out. The theoretical model could be used as the reference for the hardware design, device debugging and calibration and DSP algorithm design. The simulation results showed that there were obvious differences in the characteristics of the geomagnetic digital signals for different operational environments, and the installation error of the structure had a great influence on the angle measurement accuracy of the missile borne geomagnetic angle measuring device.