In order to research this question, a sea spectrum in the kinetic coordinate system is derived.
研究了直升机掠海飞行时海浪滤波器和高度组合系统设计问题,给出了运动坐标系下海浪谱,借鉴直升机海面悬停时精确高度的维纳滤波提取法,利用伯特-香农法设计了掠海飞行海浪滤波器,给出了高度组合系统,结合某型直升机做了仿真,验证了海浪滤波器和高度组合系统的有效性。
The frequency spectrum of sea wave in a kinetic coordinate system is related ot the directional spectruIn of sea wave in a static coordinate system.
基于Galieo变换，导出了运动坐标系与静止坐标系中海浪谱间的关系。
Based on principle of rigid body kinematics, the influence coefficient of mechanism is investigated and the formulation for solving influence coefficient of mechanism is given in the concept of moving coordinate system and pseudo convected velocity.
基于刚体运动学的原理,对机构影响系数进行了研究,用运动坐标系和拟牵连速度的概念给出了机构速度影响系数求解公式,揭示了机构影响系数的物理意义,明确地论证了机构速度影响系数只与机构瞬时位姿有关而与机构的真实速度无关的结论。