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分析了掠地火箭弹全弹道运动规律,给出了不同弹道段的多项式数据模型,基于变量差分法确定多项式阶数,由最小二乘法计算多项式系数。采用正交多项式进行平滑、滤波、预测及数据合理性检验,并通过径向速度修正和数据融合,得到更高精度的测速数据。在此基础上开发了数据处理软件,对实弹射击采集数据进行了处理。试验结果表明,该算法平滑滤波后数据误差明显降低,数据精度有较大的提高。因此,该数据处理方法是有效的。 更多还原

【Abstract】 Whole trajectory motion rule of ground skimming rocket projectile is analyzed.Polynomial data model of different trajectory section is proposed,in which the variable difference method is used to determine polynomial order and the least square method is applied to compute polynomial coefficients.Smoothing,filtering,prediction and data rationality checking are carried out by orthogonal polynomial.Moreover,velocity measurement data with higher precision are got by radial velocity updating and data ... 更多还原