中文摘要：

发射原点的位移偏差不仅对发射点的位置带来变化，同时使得测站的测量数据发生改变，从而影响到箭体上测量点的位置变化。首先分析发射点偏差引起的扰动矩阵，再对测量数据发生的变化进行计算，最后对箭体上测量点的位置定位情况进行分析，进而得出发射点的经度、纬度、高程位移偏差对火箭垂直起飞段横向漂移的量化结果。此量化结论为分析和提高火箭发射过程的安全性评估提供重要参考。

英文摘要：

The displacement deviation of the firing point brings the change to both the position of the firing point and survey data of the TT＆C station, thus begets the changing of the target position onthe rocket. First, h analyzes the perturbation matrix of being caused by the deviation of firing point. Secondly calculates the survey data of being changed. Finally analyzes to target position situation on the rocket. It obtains the quantification result of crosswise drifting, which being changed by firing point deviation of the geodetic longitude, geodetic latitude and. altitude. This quantification conclusion can provide the important reference for analyzing and enhancing the security of the rocket launch process.