计算得出导弹的被动段飞行轨迹（未考虑大气）和再入点、落点信息（在发射惯性坐标系内的位置量）-Calculated the passive missile flight path segment (not to consider the atmosphere) and re-entry point, placement of information (in the firing position within the inertial coordinate system volume)

The key benefits of using the smartphone accelerometer for human mobility analysis, with or without location determination based upon GPS, Wi-Fi or GSM is that it is energy-efficient, provides real-time contextual information and has high availabil