这个系统利用重力加速度计与磁通门磁强计实现对三维空间物体的姿态测量, 并能以此为基准实现物体空间移动轨迹的检测。在方向的测量中使用了3 个传感器代替传统的单个传感器测量, 以减小加速度计与磁通门计在与物体运动方向成较小角度时灵敏度的下降。通过实验得知这种方法是十分有效的。关键词: 磁通门; 姿态测量; 空间定位Abstract : A system utilizing accelerometers and flux - gates to detect aerocraft attitude in space , therefore realizing the real - time measurement of moving path based on this information , is introduced in this paper , Instead of using one sensor to mea2 sure the direction , this system uses three perpendicularly mounted sensors to measure one direction so as to avoid the sensibility loss on small angle. Through experiment , this method is proved to be effective。Key words : magnetic flux - gate ; direction sensing ; space locating