基于地磁场的弹体滚转角几何解算方法研究

弹体姿态的测量是一项关系到弹道修正实现的关键技术，基于地磁场的姿态测量方法以其低成本、无累积误差等优点成为当前的研究热点。通过几何关系人手，从几何解算方法模型的建立到解算原理的推导，建立地磁场局部模型，推导了解算方程，并利用弹体运动过程中的空间几何关系对三角函数解算结果的多值进行了分析。利用实弹的数据进行了验证分析，表明该解算方法简单且能达到预期的测量效果，具有很好的应用前景和重要的军事应用价值。

Research on Geometrical Resolution of Projectile Roll Attitude Measurement Based on Geomagnetism

The attitude measurement of projectile is the key technology to achievement of trajectory correction. And the traditional attitude measurements had much limitation when they were applied on the traditional ammunition. The attitude measurement based on the geomagnetism becomes popular with its advantage, such as low cost. The paper gives the information about not only building of the model but the function. First, the basic assumptions and the reference frame are given, and then the local geomagnetism model, and work out the result on the end. From the simulation with the experiment data, it turns out that it is a sample means and it can carry the point. So the measurement has the well foreground and important application value.