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导弹发射前,当给出了一组目标位置坐标数据后,电子制导系统就计算导弹飞行在惯性固定坐标系中的位置和速度。惯性坐标系中的所有变量都是以目标为原点的三轴正交坐标系来定义的。这个无主动滚动控制的制导系统的作用是通过把导弹的速度向量一直对准目标位置来实现的。
Before a missile is launched, the electronic guidance system calculates the position and velocity of the missile flight in the inertial fixed coordinate system when given a set of target position coordinate data. All variables in an inertial coordinate system are defined by a three-axis orthogonal coordinate system with the origin of the target. This active rolling control of the guidance system is the role of the missile by the velocity vector is always aligned with the target position to achieve.