Without this reciprocity of observation, we would be able to identify absolute motion . 没有这种观察的倒易性,我们就能够辩认绝对运动。
The method of applying frequency analysis theory is proposed to resolve the problem of ship motion . the mathematic models of ship - based missile in launch period are established . these models consist of relative motion in launch - fixed coordinate and absolute motion in earth - fixed coordinate 采用了动静法的描述形式建立了舰载导弹在发射段的数学模型,分别给出了导弹相对发射坐标系的相对运动模型和导弹在地面坐标系下的绝对运动模型。