目的　探讨一种外弹道弹道诸元实时解算算法 ,为以后计算弹道偏差量提供依据 .方法　先建立解算模型 ,然后通过分析误差来验证模型是否正确 .结果　根据模型 ,能够计算出任一时刻的弹道诸元 ,与标准质点外弹道方程的计算结果比较 ,相对误差均在 0 .1 %以内 .结论　本解算算法是可行的 ,能够为弹道偏差解算提供可靠依据 Objective To explore a real-time solution algorithm of external ballistic trajectory elements for the future calculation of trajectory deviation to provide the basis for the method.First, to establish a solution model, and then verify the model by analyzing the error is correct.Results According to the model, can be calculated at any moment Compared with the results of the ballistic equations of the standard particle, the relative errors of ballistic elements are within 0.1%. CONCLUSION This algorithm is feasible and can provide a reliable basis for solving the ballistic deviation