制导旋转弹箭的命中精度与其滚转角信号的解算精度密切相关。地磁传感器作为一种低成本的滚转角解算手段得到广泛使用。为对其解算精度进行分析,文中建立了误差模型,并进行了仿真分析。结果表明,滚转角精度主要取决于北向角的取值范围。当北向角大于35°时,解算精度较高,有利于保证弹箭射击精度。而当北向角小于15°时,滚转角误差急剧发散,使得弹箭射击精度变差。文中的分析研究可为弹箭控制系统设计及作战使用提供一定的指导。

The hitting accuracy of guided rotating missile is closely related to the accuracy of roll angle signal. Geomagnetic sensors are widely used as a low-cost rolling angle calculation method. In order to analyze the accuracy of its solution, this paper establishes an error model and carries out simulation analysis. The results show that the accuracy of roll angle mainly depends on the range of the northward angle. When the northward angle is more than 35 degrees, the calculation accuracy is higher, which is helpful to ensure the shooting accuracy of projectiles and rockets. When the northward angle is less than 15 degrees, the roll angle error diverges sharply, which makes the shooting accuracy of rockets worse. The analysis and research in this paper can provide some guidance for the design and operation of rocket control system.