相对运动

• Earth ' s layered structure - - a relatively thin crust of mobile plates , a solid mantle with gradual overturning movement , and the outer and inner core of molten and solid iron
  地球是分层结构?相对运动变化的板块薄的外壳,一块具有逐渐加强的颠覆运动形式的固态硬壳,具有远离中心的外层和内部熔化的内核和固态铁。
• Inverse synthetic aperture radar ( isar ) imaging of non - cooperative maneuvering multi - target is a challenging task due to its time varying orientation and the relative motion among targets
  摘要非合作的机动多目标相对于雷达射线的姿态是时变的，而且目标间可能存在相对运动，给逆合成孔径雷达( isar )成像造成较大困难。
• The relative motion between the base station and the mobile results in random frequency modulation due to different doppler shifts on each of the multi - path components , also called time selective fading
  由于基站与移动台之间的相对运动，每条路径都会有一个明显的多普勒频移，导致信道的随机频率调制，也称时间选择性衰落。
• In order to research the eddy current electromagnetic force that varies with the relative speed , including brake force and attraction , the high speed simulation test stand for track eddy current brake was developed
  为了研究涡流电磁力包括涡流制动力的电磁吸力，在不同的相对运动速度下的变化规律，研制了轨道涡流制动试验台。
• Considering the missile - target intercepting in reality is always under the three dimensional environment , so the equation of missile - target relative motion is eastablished in three dimensional spherical coordinates
  摘要考虑到真实的导弹目标拦截都是在三维环境下进行的，因此在三维球坐标系下建立了导弹目标的相对运动学方程。
• All machinery motion is relative movement relying on its " spares pairs . abrasion happened with relative movement , and abrasion is the main cause of surface damage , spares invalid , and material friction loss
  所有机器的运动都是依赖其零件副的相对运动，有相对运动就有磨损，磨损是导致表面损坏、零件失效和材料损耗的主要原因。
• Due to the interstitial fluid between the partials , the solutions of the pressure and tangential force between the two granules are the theoretical foundation of the wet granular discrete element method
  当颗粒之间有法向或切向相对运动时，由于存在填隙流体，颗粒之间产生的法向的挤压力和切向阻力，是湿颗粒离散元法的理论基础。
• Then the paper applies ea and spea to an orbital transformation problem . - time - energy optimization o the paper also solve low thrust control problem of relative motion using fuzzy logic
  然后分别用一般的进化算法和改进的spea方法解决轨道转移的时间-能量优化问题，对于相对运动方程有限推力控制问题，本文用模糊控制的方法加以解决。
• Radar imaging of ocean - going ships is difficult to get good images because of the complicated relative motion , so time - frequency analysis is performed for ship imaging with the isar real data in chapter 3
  由于雷达与舰船之间相对运动的复杂性,直接成像得到的图像质量较差,论文第三章用时频分析的方法,对实测数据的舰船成像进行了研究。