弹箭的飞行过程往往伴随高速旋转,这使弹体的姿态测量成为一大难题,常规惯性器件虽然也能测量,但成本较高。工程急需一种可以满足高过载、大量程、小体积、低成本要求的旋转弹体测量方法。针对这一问题,提出一种基于卫星定位系统与磁阻传感器组合的测量方法,利用卫星导航系统提供的弹道信息进行弹体滚转姿态解算。仿真结果表明:解算的结果与惯导输出的滚转角基本相符,误差较小,精度可以满足工程使用。

Rocket is spinning at high speed in flight, which makes attitude measurement of the projectile be a difficult problem. Normal inertial devices might measure, but cost too much. A method was urgently needed in engineering practice which could satisfy the requirements of high overload, large range, small-for-size and low cost for the spinning projectiles. In view of this problem, a method based on global navigation satellite system (GNSS) /magnetic sensor was raised, using trajectory information exported by GNSS to calculate the roll attitude of rockets. The result of simulation shows that the calculation is consonant to outputs of inertial navigation system, fractional error is small, and the precision is satiable for engineering practice.