通过契比雪夫多项式(Chebyshev polynomials)，我们从sinΩ和cosΩ开始，有效地进行sin(nΩ)和cos(nΩ)的递归运算。
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第二类契比雪夫多项式 The second kind of chebyshev polynomials
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将本方法在周期时段划分、拟合精度、函数收敛方面与契比雪夫多项式拟合法进行了对比。
The Fourier polynomial fitting is compared with the Chebysher polynomial fitting in the division of cyclic time interval and fitting accuracy as well as convergence of function.
一种是“可变参数内插法”，另一种是用契比雪夫多项式对卫星直角坐标进行高阶内插的方法。
One of them is "the interpolation of variable parameters" and the other is the higher order interpolation of rectangular coordinates of satellites by means of Chebyshev polynomial.
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