Comparison of a set of measured data to numerical computations of the backscattering coefficients for actual natural rough surface by the classical and new perturbation methods were given.

采用传统微扰法和基于圆柱曲面修正的微扰法，计算了实际粗糙面掠入射时的后向散射系数，并与有关测量值进行了比较。

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For the ballistic missile using perturbation guidance, the computation of partial derivative at shutdown point is very important for data calculation and validation.

对摄动制导的弹道导弹而言，关机点偏导数和全导数计算及其校验是导弹诸元计算中的重要环节。

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Parameters are evaluated by using an integral transform technique and a single perturbation technique. An improved method of moment is provided to treat experimental data.

分别用积分变换法和奇异摄动法，导出了数学模型在拉氏域内的解和时间域内的近似解析解，并用导得的解进行模型参数估值。

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